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Showing 51 - 100 of 512 results

Efficacy of Pink Noise and Earplugs for Mitigating the Effects of Intermittent Environmental Noise Exposure on Sleep

Basner, Mathias

;

Smith, Michael G.

2026-02-01 | PDF

Nighttime environmental noise (EN) exposure disturbs sleep and increases morbidity and mortality. Affordable and effective countermeasures are needed, but rigorous research is scarce. This study investigates the efficacy of pink noise (PN) and earplugs for mitigating the effects of intermittent EN on sleep.

03/30/2026

Title : Efficacy of Pink Noise and Earplugs for Mitigating the Effects of Intermittent Environmental Noise Exposure on Sleep Creator(s) : Basner, Mathias;Smith, Michael G.;Cordoza, Makayla;Kayser, Matthew S.;Carlin, Michele;Ecker, Adrian J.;Gilad, Yoni;Park-Chavar, Sierra;Rennie, Ka’alana;Schneller, Victoria;Walsh, Sinead;Shou, Haochang;Cao, Quy;Younes, Magdy;Aeschbach, Daniel;Jones, Christopher W.; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;University of Pennsylvania; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2026-02-01 Report Number : sag001 DOI : https://doi.org/10.1093/sleep/zsag001 Basner, Mathias et al. (2026). Efficacy of Pink Noise and Earplugs for Mitigating the Effects of Intermittent Environmental Noise Exposure on Sleep. https://doi.org/10.1093/sleep/zsag001 Basner, Mathias et al. "Efficacy of Pink Noise and Earplugs for Mitigating the Effects of Intermittent Environmental Noise Exposure on Sleep" (2026), https://doi.org/10.1093/sleep/zsag001 Basner, Mathias et al. "Efficacy of Pink Noise and Earplugs for Mitigating the Effects of Intermittent Environmental Noise Exposure on Sleep" , 2026, https://doi.org/10.1093/sleep/zsag001 Export RIS Citation Information. TY - Journal Article AU - Basner, Mathias AU - Smith, Michael G. AU - Cordoza, Makayla AU - Kayser, Matthew S. AU - Carlin, Michele AU - Ecker, Adrian J. AU - Gilad, Yoni AU - Park-Chavar, Sierra AU - Rennie, Ka’alana AU - Schneller, Victoria AU - Walsh, Sinead AU - Shou, Haochang AU - Cao, Quy AU - Younes, Magdy AU - Aeschbach, Daniel AU - Jones, Christopher W. A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - University of Pennsylvania A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Nighttime environmental noise (EN) exposure disturbs sleep and increases morbidity and mortality. Affordable and effective countermeasures are needed, but rigorous research is scarce. This study investigates the efficacy of pink noise (PN) and earplugs for mitigating the effects of intermittent EN on sleep. AB - This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Please cite this article as: Mathias Basner, Michael G Smith, Makayla Cordoza, Matthew S Kayser, Michele Carlin, Adrian J Ecker, Yoni Gilad, Sierra Park-Chavar, Ka’alana Rennie, Victoria Schneller, Sinead Walsh, Haochang Shou, Quy Cao, Magdy Younes, Daniel Aeschbach, Christopher W Jones, Efficacy of pink noise and earplugs for mitigating the effects of intermittent environmental noise exposure on sleep, Sleep, 2026;, zsag001, https://doi.org/10.1093/sleep/zsag001 AN - dot:89738 DO - https://doi.org/10.1093/sleep/zsag001 KW - Aircraft noise KW - Broadband KW - Noise KW - Environmental impacts KW - Sleep KW - Sleep deprivation KW - ASCENT LA - English PB - Oxford University Press PY - 2026-02-01 SN - sag001 TI - Efficacy of Pink Noise and Earplugs for Mitigating the Effects of Intermittent Environmental Noise Exposure on Sleep M3 - Journal Article N1 - United States N1 - 13-C-AJFE-UPENN-015 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/89738 ER -
Pilot Sleep Study near Philadelphia International Airport — ASCENT Project 17 Report

Basner, Mathias

;

McGuire, Sarah

2016-08-01 | PDF

New field studies need to be conducted in the US to acquire current data relative to varying degrees of noise exposure to provide information on the effect of noise on sleep. As studies may need to investigate samples around multiple airports it will not be possible to use polysomnography to monitor sleep, as it has a high methodological cost. Inst ...

03/30/2026

Title : Pilot Sleep Study near Philadelphia International Airport — ASCENT Project 17 Report Creator(s) : Basner, Mathias;McGuire, Sarah;Witte, Maryam; Corporate Creator(s) : University of Pennsylvania. School of Medicine Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy; Published Date : 2016-08-01 URL : https://rosap.ntl.bts.gov/view/dot/89737 Basner, Mathias et al. (2016). Pilot Sleep Study near Philadelphia International Airport — ASCENT Project 17 Report. Basner, Mathias and McGuire, Sarah and Witte, Maryam "Pilot Sleep Study near Philadelphia International Airport — ASCENT Project 17 Report" (2016) Basner, Mathias et al. "Pilot Sleep Study near Philadelphia International Airport — ASCENT Project 17 Report" , 2016 Export RIS Citation Information. TY - Tech Report AU - Basner, Mathias AU - McGuire, Sarah AU - Witte, Maryam A2 - University of Pennsylvania. School of Medicine A3 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - New field studies need to be conducted in the US to acquire current data relative to varying degrees of noise exposure to provide information on the effect of noise on sleep. As studies may need to investigate samples around multiple airports it will not be possible to use polysomnography to monitor sleep, as it has a high methodological cost. Instead, the use of actigraphy and electrocardiography (ECG) has been examined. This approach is cost-effective, as individuals can be taught how to use the equipment on their own, and will allow a methodologically sound investigation of large subject cohorts to be investigated. This methodology was implemented in a pilot study conducted around Philadelphia International Airport. Eighty participants were recruited for the study, 40 from a region with aircraft noise exposure near the airport and 40 from a control region in Philadelphia County. Participants completed 3 nights of unattended physiological and noise measurements. The primary purpose of this study was to evaluate the feasibility of the ECG and actigraphy methodology. It was found that study participants could complete the measurements on their own with minimal data loss. AN - dot:89737 KW - Aircraft noise KW - Sleep deprivation KW - Field studies KW - Logistic regression analysis KW - Airport noise KW - ASCENT LA - English PB - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment PY - 2016-08-01 TI - Pilot Sleep Study near Philadelphia International Airport — ASCENT Project 17 Report M3 - Tech Report N1 - United States N1 - 13-C-AJFE-UPenn-002 UR - https://rosap.ntl.bts.gov/view/dot/89737 ER -
Multi-Objective Decision Analysis and Optimization Model for Transportation Investment Decision-Making at MDOT

Robert, William ;

Bliss, Abigail

2026-01-29 | PDF

Multi-objective decision analysis (MODA) provides transportation agencies with a structured process for identifying a set of investments that delivers the greatest impact toward their objectives. In the presented research, the research team developed a prototype MODA-based approach for prioritizing pavement rehabilitation and reconstruction project ...

03/30/2026

Title : Multi-Objective Decision Analysis and Optimization Model for Transportation Investment Decision-Making at MDOT Creator(s) : Robert, William;Bliss, Abigail;Morrison, Constance; Corporate Creator(s) : Spy Pond Partners, LLC Corporate Contributor(s) : Michigan Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-01-29 Report Number : SPR-1764 URL : https://rosap.ntl.bts.gov/view/dot/89736 Robert, William et al. (2026). Multi-Objective Decision Analysis and Optimization Model for Transportation Investment Decision-Making at MDOT. Robert, William and Bliss, Abigail and Morrison, Constance "Multi-Objective Decision Analysis and Optimization Model for Transportation Investment Decision-Making at MDOT" (2026) Robert, William et al. "Multi-Objective Decision Analysis and Optimization Model for Transportation Investment Decision-Making at MDOT" , 2026 Export RIS Citation Information. TY - Tech Report AU - Robert, William AU - Bliss, Abigail AU - Morrison, Constance A2 - Spy Pond Partners, LLC A3 - Michigan Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - Multi-objective decision analysis (MODA) provides transportation agencies with a structured process for identifying a set of investments that delivers the greatest impact toward their objectives. In the presented research, the research team developed a prototype MODA-based approach for prioritizing pavement rehabilitation and reconstruction projects at the Michigan Department of Transportation (MDOT). Research activities included a review of best practices and MODA applications, development of goals and measures for quantifying projects’ anticipated impacts, and implementation and evaluation of the proposed MODA approach using 39 test projects. The research demonstrated that a MODA-based approach can be used to assess and prioritize the target set of projects based on their anticipated asset condition, safety, accessibility and mobility, and environmental impacts. Further research could include implementation and evaluation of the proposed approach with additional data or decision-support tools, as well as adaptation of the MODA approach to other program areas at MDOT. AN - dot:89736 ET - Final Report, 1/30/2024 - 1/30/2026 KW - Resource allocation KW - Project management KW - Decision making KW - Asset management KW - Transportation system management KW - Analysis KW - Optimization KW - Data analysis KW - project prioritization KW - multi-objective decision analysis KW - transportation asset management LA - English PB - Michigan Department of Transportation. Research Administration PY - 2026-01-29 SN - SPR-1764 TI - Multi-Objective Decision Analysis and Optimization Model for Transportation Investment Decision-Making at MDOT M3 - Tech Report N1 - United States N1 - 2024-0192 UR - https://rosap.ntl.bts.gov/view/dot/89736 ER -
Beyond Bid-Build: Innovative Project Delivery Methods

United States. Department of Transportation. Federal Highway Administration

2026-02-20 | PDF

Many transportation agencies face tight budgets, price swings, staff shortages, and the loss of experienced workers, making it harder to deliver infrastructure projects efficiently. Traditionally, government contracts are awarded to the qualified lowest-priced bidder, but when bidders try too hard to offer the lowest price, they may underestimate t ...

03/30/2026

Title : Beyond Bid-Build: Innovative Project Delivery Methods Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Federal Highway Administration. Center for Accelerating Innovation Contributor(s) : Weisner, Kat;DeSanto, James;Urban, Melinda; Published Date : 2026-02-20 Report Number : FHWA-26-CAI-001 URL : https://rosap.ntl.bts.gov/view/dot/89735 United States. Department of Transportation. Federal Highway Administration (2026). Beyond Bid-Build: Innovative Project Delivery Methods. United States. Department of Transportation. Federal Highway Administration "Beyond Bid-Build: Innovative Project Delivery Methods" (2026) United States. Department of Transportation. Federal Highway Administration "Beyond Bid-Build: Innovative Project Delivery Methods" , 2026 Export RIS Citation Information. TY - Brief A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Federal Highway Administration. Center for Accelerating Innovation A4 - Weisner, Kat A4 - DeSanto, James A4 - Urban, Melinda AB - Many transportation agencies face tight budgets, price swings, staff shortages, and the loss of experienced workers, making it harder to deliver infrastructure projects efficiently. Traditionally, government contracts are awarded to the qualified lowest-priced bidder, but when bidders try too hard to offer the lowest price, they may underestimate the work. This can lead to lower-quality results, contract changes, delays, and higher costs, especially on complex projects. Alternative Contracting Methods (ACMs) offer a more strategic approach, allowing agencies to tailor procurement to a project’s unique circumstances, helping agencies meet their goals faster, smarter, and with better long-term results. AN - dot:89735 KW - Project delivery KW - Innovation KW - Design bid build KW - Contracting LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2026-02-20 SN - FHWA-26-CAI-001 TI - Beyond Bid-Build: Innovative Project Delivery Methods M3 - Brief N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/89735 ER -
Highway Construction Workforce Partnership: Strategic Workforce Development: Recruiting Tomorrow's Highway Construction Workforce

United States. Department of Transportation. Federal Highway Administration

2021-08-11 | PDF

Maintaining a strong, capable highway construction workforce keeps the nation’s transportation industry and economy moving forward. In an effort to identify, train, and place qualified individuals into needed roles, the U.S. Department of Transportation’s Federal Highway Administration (FHWA) established the Highway Construction Workforce Partnersh ...

03/30/2026

Title : Highway Construction Workforce Partnership: Strategic Workforce Development: Recruiting Tomorrow's Highway Construction Workforce Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Contributor(s) : Caliendo, Michael;Chavez, Robert;Koss, Jason; Published Date : 2021-08-11 URL : https://rosap.ntl.bts.gov/view/dot/89734 United States. Department of Transportation. Federal Highway Administration (2021). Highway Construction Workforce Partnership: Strategic Workforce Development: Recruiting Tomorrow's Highway Construction Workforce. United States. Department of Transportation. Federal Highway Administration "Highway Construction Workforce Partnership: Strategic Workforce Development: Recruiting Tomorrow's Highway Construction Workforce" (2021) United States. Department of Transportation. Federal Highway Administration "Highway Construction Workforce Partnership: Strategic Workforce Development: Recruiting Tomorrow's Highway Construction Workforce" , 2021 Export RIS Citation Information. TY - Tech Report A2 - United States. Department of Transportation. Federal Highway Administration A4 - Caliendo, Michael A4 - Chavez, Robert A4 - Koss, Jason AB - Maintaining a strong, capable highway construction workforce keeps the nation’s transportation industry and economy moving forward. In an effort to identify, train, and place qualified individuals into needed roles, the U.S. Department of Transportation’s Federal Highway Administration (FHWA) established the Highway Construction Workforce Partnership (HCWP). By bringing together highway construction, education, and workforce interests at state and local levels, partner working groups form to identify needs and resources to fill industry workforce gaps. HCWPs in Idaho, Los Angeles, and Pittsburgh have refined recruitment to maintain a consistent flow of applicants for highway construction positions. AN - dot:89734 KW - Education and training KW - Training KW - Road construction KW - Road construction industry KW - Transportation careers LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2021-08-11 TI - Highway Construction Workforce Partnership: Strategic Workforce Development: Recruiting Tomorrow's Highway Construction Workforce M3 - Tech Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/89734 ER -
Highway Construction Workforce Partnership: Strategic Workforce Development: Texas's ConnectU2Jobs Program Changes Lives through Community Partnerships

United States. Department of Transportation. Federal Highway Administration

2022-04-04 | PDF

Keeping a constant flow of skilled individuals ready to enter the highway construction workforce is critical to maintaining safe roadways in Texas. To help meet that need and offer lasting career potential to individuals who typically may not be provided such options, the Texas Department of Transportation (TxDOT) established its ConnectU2Jobs prog ...

03/30/2026

Title : Highway Construction Workforce Partnership: Strategic Workforce Development: Texas's ConnectU2Jobs Program Changes Lives through Community Partnerships Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 2022-04-04 URL : https://rosap.ntl.bts.gov/view/dot/89733 United States. Department of Transportation. Federal Highway Administration (2022). Highway Construction Workforce Partnership: Strategic Workforce Development: Texas's ConnectU2Jobs Program Changes Lives through Community Partnerships. United States. Department of Transportation. Federal Highway Administration "Highway Construction Workforce Partnership: Strategic Workforce Development: Texas's ConnectU2Jobs Program Changes Lives through Community Partnerships" (2022) United States. Department of Transportation. Federal Highway Administration "Highway Construction Workforce Partnership: Strategic Workforce Development: Texas's ConnectU2Jobs Program Changes Lives through Community Partnerships" , 2022 Export RIS Citation Information. TY - Brief A2 - United States. Department of Transportation. Federal Highway Administration AB - Keeping a constant flow of skilled individuals ready to enter the highway construction workforce is critical to maintaining safe roadways in Texas. To help meet that need and offer lasting career potential to individuals who typically may not be provided such options, the Texas Department of Transportation (TxDOT) established its ConnectU2Jobs program. The Highway Construction Workforce Partnership (HCWP) includes TxDOT, Federal Highway Administration (FHWA), Texas Workforce Commission, Dallas College, Workforce Solutions Greater Dallas, Regional Black Contractors Association, Regional Hispanic Contractors Association, Lone Star Justice Alliance, and Associated General Contractors of Texas. AN - dot:89733 KW - Education and training KW - Training KW - Road construction KW - Road construction industry KW - Transportation careers KW - Partnerships LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2022-04-04 TI - Highway Construction Workforce Partnership: Strategic Workforce Development: Texas's ConnectU2Jobs Program Changes Lives through Community Partnerships M3 - Brief N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/89733 ER -
Flammability of Aircraft Insulation Blankets Subjected to Electrical Arc Ignition Sources

Cahill, Patricia

2000-04-01 | PDF

In the fall of 1998, the Federal Aviation Administration (FAA) initiated a program of intense testing, i.e., full-scale testing, intermediate testing, bench-scale testing, and electrical ignition testing on thermal acoustical insulation. This work was prompted by several factors related to current fire test requirements, including the crash of the ...

03/30/2026

Title : Flammability of Aircraft Insulation Blankets Subjected to Electrical Arc Ignition Sources Creator(s) : Cahill, Patricia Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. Airport and Aircraft Safety Research and Development Division. Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Aviation Research Published Date : 2000-04-01 Report Number : DOT/FAA/AR-TN00/20 URL : https://rosap.ntl.bts.gov/view/dot/89732 Cahill, Patricia (2000). Flammability of Aircraft Insulation Blankets Subjected to Electrical Arc Ignition Sources. Cahill, Patricia "Flammability of Aircraft Insulation Blankets Subjected to Electrical Arc Ignition Sources" (2000) Cahill, Patricia "Flammability of Aircraft Insulation Blankets Subjected to Electrical Arc Ignition Sources" , 2000 Export RIS Citation Information. TY - Tech Report AU - Cahill, Patricia A2 - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. Airport and Aircraft Safety Research and Development Division. A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Aviation Research AB - In the fall of 1998, the Federal Aviation Administration (FAA) initiated a program of intense testing, i.e., full-scale testing, intermediate testing, bench-scale testing, and electrical ignition testing on thermal acoustical insulation. This work was prompted by several factors related to current fire test requirements, including the crash of the Swissair MD-11 off the coast of Canada, and the failure of an industry fire test standard called the cotton swab test to characterize the flammability characteristics of a certain foam and fiberglass cover material. Electrical testing was an important part of this program due to the number of reported incidents involving flame spread on thermal acoustical insulation blankets caused by electrical failures such as short circuits. The thermal acoustical insulation films tested in this program were polyimide, metallized and nonmetallized polyester poly (ethylene terepthalate) (PET) and metallized poly (vinyl fluoride) (PVF). Each of these materials was used to fabricate test blankets with 0.42 pound per cubic foot (pcf) fiberglass batting. The test blankets were subjected to 115-and 208-volt electrical arcing tests. This same testing was performed on these blankets with a corrosion inhibiting compound (CIC) sprayed on them. The data showed that the metallized PET blankets ignited with significant flame spread at both voltages with and without CIC. The polyimide and metallized PVF blankets did not ignite at either voltage when tested plain or with CIC application. The plain PET blankets ignited at both voltages, with minimal flame spread, and the fire self-extinguished within seconds. When tested with CIC at 115 volts, flaming in the seam area occurred but self-extinguished within seconds. No ignition occurred at 208 volts. AN - dot:89732 ET - Technical Note KW - Acoustic materials KW - Sound insulating materials KW - Aircraft KW - Insulation blankets KW - Corrosion resistant materials KW - Electric arcs KW - Flammability tests KW - Ignition KW - Polyester resins KW - Protective coating KW - Heat insulating materials KW - Arc discharges KW - Blankets KW - Corrosion inhibitors KW - PET(Poly(ethylene KW - PVF(Poly(vinyl fluoride)) LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 2000-04-01 SN - DOT/FAA/AR-TN00/20 TI - Flammability of Aircraft Insulation Blankets Subjected to Electrical Arc Ignition Sources M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89732 ER -
Resilient Modulus of Coarse-Grained Subgrade Soils for Pavement Design

Hossain, M. Shabbir ;

Nair, Harikrishnan

2026-03-01 | PDF

In 2018, the Virginia Department of Transportation (VDOT) implemented the American Association of State Highway and Transportation Officials’ (AASHTO) AASHTOWare-ME version 2.2.6 as the pavement design methodology for new, reconstruction, and lane-widening projects, including interstate, primary, and secondary routes with annual average daily traff ...

03/30/2026

Title : Resilient Modulus of Coarse-Grained Subgrade Soils for Pavement Design Creator(s) : Hossain, M. Shabbir;Nair, Harikrishnan; Corporate Creator(s) : Virginia Transportation Research Council (VTRC) Corporate Contributor(s) : Virginia. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-03-01 Report Number : FHWA/VTRC 26-R35 URL : https://rosap.ntl.bts.gov/view/dot/89731 Hossain, M. Shabbir and Nair, Harikrishnan (2026). Resilient Modulus of Coarse-Grained Subgrade Soils for Pavement Design. Hossain, M. Shabbir and Nair, Harikrishnan "Resilient Modulus of Coarse-Grained Subgrade Soils for Pavement Design" (2026) Hossain, M. Shabbir and Nair, Harikrishnan "Resilient Modulus of Coarse-Grained Subgrade Soils for Pavement Design" , 2026 Export RIS Citation Information. TY - Tech Report AU - Hossain, M. Shabbir AU - Nair, Harikrishnan A2 - Virginia Transportation Research Council (VTRC) A3 - Virginia. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - In 2018, the Virginia Department of Transportation (VDOT) implemented the American Association of State Highway and Transportation Officials’ (AASHTO) AASHTOWare-ME version 2.2.6 as the pavement design methodology for new, reconstruction, and lane-widening projects, including interstate, primary, and secondary routes with annual average daily traffic greater than 10,000 vehicles. The Mechanistic-Empirical Pavement Design Guide (MEPDG) and the AASHTOWare Pavement ME software provided an improved process for conducting pavement analysis and for developing pavement designs based on mechanistic-empirical principles. To facilitate the pavement design, MEPDG recommends the resilient modulus (Mr) to characterize the subgrade soils. As part of VDOT’s MEPDG implementation efforts, the Materials Division Soils Lab collected both fine-and coarse-grained soil samples from around the state on which to perform Mr tests. For fine-grained soils (A-4, A-5, A-6, and A-7), a correlation with unconfined compression strength was developed in a Virginia Transportation Research Council study that is currently being used to estimate design Mr for high-volume projects (annual average daily traffic > 10,000) as an alternative to actual Mr testing. Also, enough fine-grained soils were tested to determine statewide average Mr values to be used in the design of low-volume roadways (annual average daily traffic < 10,000). However, no statewide average Mr values or correlations are currently available for coarse-grained soils (A-1, A-2, and A-3). Although some actual measured Mr values of coarse-grained soil are available, they are significantly less than AASHTO-recommended Mr values (MEPDG default), which needs to be further investigated. During this study, six coarse-grained soil samples were tested for Mr at standard Proctor compactive effort: three A-2-4, one A-26, and two A-3. The Mr values at a confining pressure of 2 psi and a deviator stress of 6 psi were less than MEPDG-recommended default values, but they are comparable with measured values reported in the literature. Sample compaction density and moisture influenced the Mr values. The Mr value of any coarse-grained soil showed a decreasing trend with increasing degrees of saturation, a combining measure of compaction density and moisture. A few soil index properties showed good correlation with Mr values. A predictive model could not be recommended because of limited data points, that is, only six soil samples. AN - dot:89731 ET - Final report: November 2022 -October 2025 KW - Pavement subgrade KW - Modulus of resilience KW - Coarse grained soils KW - Pavement design KW - Mechanistic-empirical pavement design KW - Testing KW - Mathematical prediction LA - English PB - Virginia Transportation Research Council (VTRC) PY - 2026-03-01 SN - FHWA/VTRC 26-R35 TI - Resilient Modulus of Coarse-Grained Subgrade Soils for Pavement Design M3 - Tech Report N1 - United States N1 - 122364 UR - https://rosap.ntl.bts.gov/view/dot/89731 ER -
Project 42 Acoustical Model of Mach Cut-off Flight

Sparrow, Victor W. ;

Bailey, Michael

2017-08-01 | PDF

Georgia Tech has completed the research plan for this task. Georgia Tech has also acquired both the source code and executable for PCBoom 6.7. PCBoom 6.7 was used to perform the sensitivity analysis on the acoustical model provided by Aerion, Volpe, and Penn State University. Georgia Tech completed the initial benchmarking study for the sensitivity ...

03/30/2026

Title : Project 42 Acoustical Model of Mach Cut-off Flight Creator(s) : Sparrow, Victor W.;Bailey, Michael;Mavris, Dimitri N.;Page, Juliet A.;Vigeant, Michelle C.;Tai, Jimmy;Busch, Greg;Huang, Zhendong;Ortega, Nick;Duca, Ruxandra;Mohan, Ratheesvar; Corporate Creator(s) : Georgia Tech Research Corporation;Pennsylvania State University;University of Washington;John A. Volpe National Transportation Systems Center (U.S.); Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy; Published Date : 2017-08-01 URL : https://rosap.ntl.bts.gov/view/dot/89730 Sparrow, Victor W. et al. (2017). Project 42 Acoustical Model of Mach Cut-off Flight. Sparrow, Victor W. et al. "Project 42 Acoustical Model of Mach Cut-off Flight" (2017) Sparrow, Victor W. et al. "Project 42 Acoustical Model of Mach Cut-off Flight" , 2017 Export RIS Citation Information. TY - Tech Report AU - Sparrow, Victor W. AU - Bailey, Michael AU - Mavris, Dimitri N. AU - Page, Juliet A. AU - Vigeant, Michelle C. AU - Tai, Jimmy AU - Busch, Greg AU - Huang, Zhendong AU - Ortega, Nick AU - Duca, Ruxandra AU - Mohan, Ratheesvar A2 - Georgia Tech Research Corporation A2 - Pennsylvania State University A2 - University of Washington A2 - John A. Volpe National Transportation Systems Center (U.S.) A3 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Georgia Tech has completed the research plan for this task. Georgia Tech has also acquired both the source code and executable for PCBoom 6.7. PCBoom 6.7 was used to perform the sensitivity analysis on the acoustical model provided by Aerion, Volpe, and Penn State University. Georgia Tech completed the initial benchmarking study for the sensitivity of Mach cut-off flight on a standard sonic boom signature (F-18 geometry provided with the executable). Georgia Tech assessed the sensitivity of the resultant ground boom strength and shape of the F-18 model with variations in atmospheric temperature and humidity as well as various flight Mach numbers. A tool to help facilitate the execution of task 4, the PCBoom wrapper, was developed and utilized. The Aerion AS2 model was successfully incorporated into the study, and the sensitivity of the model was assessed for both Mach cut-on and Mach cut-off conditions. The sensitivity study was performed and completed for various temperatures, winds, and relative humidity in both standard atmospheric profiles and realistic atmospheric profiles. The results of the study were compiled and presented in this report. Task 5 was completed through extensive research into various technologies that could help enable Mach cut-off flight. Insight on many of the technologies was solicited from scientists and researcher in the atmospheric sciences. The most promising technologies were investigated further, and a summary of those technologies is presented in this report. AN - dot:89730 KW - Acoustics KW - Aircraft noise KW - Supersonic aircraft KW - Mach number KW - Aviation KW - ASCENT LA - English PB - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment PY - 2017-08-01 TI - Project 42 Acoustical Model of Mach Cut-off Flight M3 - Tech Report N1 - United States N1 - 13-C-AJFE-GIT-023 UR - https://rosap.ntl.bts.gov/view/dot/89730 ER -
Project 010 Aircraft Technology Modeling and Assessment

Mavris, Dimitri N.

;

Crossley, William

2023-12-01 | PDF

For duration of Project 10’s period of performance, the research activities have remained consistent on technology modeling, system level assessment and fleet level modeling. These activities were conducted for subsonic fleet from 2014 to 2017 and focused on supersonic fleet from 2017 to 2023. The final report focuses on the latter in which Georgia ...

03/30/2026

Title : Project 010 Aircraft Technology Modeling and Assessment Creator(s) : Mavris, Dimitri N.;Crossley, William;Tai, Jimmy C.;DeLaurentis, Daniel;Ahuja, Jai;Perron, Christian;Lee, Chung;Stewart, Brennan;Kenny, James D.;Pfaender, Holger;Baltman, Edan;Azevedo, Joao de;Sampaio, Barbara;Vlady, Ted;Iyengar, Nikhil;Roohi, Zayne;Varadharajan, Srikanth Tindivanam;Tegen, Carter J.;Kalaria, Divya K.;Macy, Madeleine E. Graham;Mane, Muharrem;Fung, Tien-Yueh;Doma, Krinal; Corporate Creator(s) : Georgia Institute of Technology Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment Published Date : 2023-12-01 URL : https://rosap.ntl.bts.gov/view/dot/89729 Mavris, Dimitri N. et al. (2023). Project 010 Aircraft Technology Modeling and Assessment. Mavris, Dimitri N. et al. "Project 010 Aircraft Technology Modeling and Assessment" (2023) Mavris, Dimitri N. et al. "Project 010 Aircraft Technology Modeling and Assessment" , 2023 Export RIS Citation Information. TY - Tech Report AU - Mavris, Dimitri N. AU - Crossley, William AU - Tai, Jimmy C. AU - DeLaurentis, Daniel AU - Ahuja, Jai AU - Perron, Christian AU - Lee, Chung AU - Stewart, Brennan AU - Kenny, James D. AU - Pfaender, Holger AU - Baltman, Edan AU - Azevedo, Joao de AU - Sampaio, Barbara AU - Vlady, Ted AU - Iyengar, Nikhil AU - Roohi, Zayne AU - Varadharajan, Srikanth Tindivanam AU - Tegen, Carter J. AU - Kalaria, Divya K. AU - Macy, Madeleine E. Graham AU - Mane, Muharrem AU - Fung, Tien-Yueh AU - Doma, Krinal A2 - Georgia Institute of Technology A3 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment AB - For duration of Project 10’s period of performance, the research activities have remained consistent on technology modeling, system level assessment and fleet level modeling. These activities were conducted for subsonic fleet from 2014 to 2017 and focused on supersonic fleet from 2017 to 2023. The final report focuses on the latter in which Georgia Tech and Purdue University teams have partnered to investigate the future demand for supersonic air travel and the environmental impacts of supersonic transports (SSTs). The combined team investigated the environmental impacts include direct carbon dioxide (CO2) emissions, noise, and fuel consumption. The primary objective of this research project is to support the FAA in modeling and assessing the potential future evolution of the next-generation supersonic aircraft fleet. The research in this project consists of five integrated focus areas: (a) establishing fleet assumptions and performing demand assessment (completed in 2021); (b) performing preliminary SST environmental impact prediction (completed in 2023); (c) developing approaches to model SSTs within the FAA Aviation Environmental Design Tool (completed in 2022); (d) performing vehicle and fleet assessments of potential future supersonic aircraft (completed in this report); and (e) performing physics-based modeling of SSTs and conceptual design by using the Framework for Advanced Supersonic Transport (FASST) (completed in the report). AN - dot:89729 ET - Final Report KW - Sonic boom KW - Aerodynamic noise KW - Aircraft noise KW - Civil aviation KW - Environmental impacts KW - Standards KW - Supersonic aircraft LA - English PB - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment PY - 2023-12-01 TI - Project 010 Aircraft Technology Modeling and Assessment M3 - Tech Report N1 - United States N1 - 13-C-AJFE-GIT-006 UR - https://rosap.ntl.bts.gov/view/dot/89729 ER -
Updates in Assessing Soil Organic Carbon and Their Implications for Evaluating Land Use Change Emissions

Benavidez-Brouk, Lauren

;

Taheripour, Farzad

2026-02-01 | PDF

Emissions from land use changes are relevant for environmental policy analysis. Since the late 1990s and early 2000s many of these analyses have examined induced land use changes (ILUC) from biofuel production and policy as well as their associated greenhouse gas (GHG) emissions. These studies have often used the Harmonized World Soil Data (HWSD) t ...

03/30/2026

Title : Updates in Assessing Soil Organic Carbon and Their Implications for Evaluating Land Use Change Emissions Creator(s) : Benavidez-Brouk, Lauren;Taheripour, Farzad;Baldos, Uris;Zhuang, Qianlai;Chen, Shuo; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Purdue University; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2026-02-01 Report Number : ERC8 025013 DOI : https://doi.org/10.1088/2515-7620/ae3d84 Benavidez-Brouk, Lauren et al. (2026). Updates in Assessing Soil Organic Carbon and Their Implications for Evaluating Land Use Change Emissions. https://doi.org/10.1088/2515-7620/ae3d84 Benavidez-Brouk, Lauren et al. "Updates in Assessing Soil Organic Carbon and Their Implications for Evaluating Land Use Change Emissions" (2026), https://doi.org/10.1088/2515-7620/ae3d84 Benavidez-Brouk, Lauren et al. "Updates in Assessing Soil Organic Carbon and Their Implications for Evaluating Land Use Change Emissions" , 2026, https://doi.org/10.1088/2515-7620/ae3d84 Export RIS Citation Information. TY - Journal Article AU - Benavidez-Brouk, Lauren AU - Taheripour, Farzad AU - Baldos, Uris AU - Zhuang, Qianlai AU - Chen, Shuo A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Purdue University A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Emissions from land use changes are relevant for environmental policy analysis. Since the late 1990s and early 2000s many of these analyses have examined induced land use changes (ILUC) from biofuel production and policy as well as their associated greenhouse gas (GHG) emissions. These studies have often used the Harmonized World Soil Data (HWSD) to evaluate the corresponding changes in soil organic carbon (SOC) as a part of their assessments. However, those modeling efforts that used this data set have not necessarily implemented its latest version, and therefore, their results may not represent the most recent available SOC data sources. As an example, the AEZ-EF model, which has been frequently used in assessing ILUC emissions, is using the oldest version of this data set. To improve the quality and accuracy of ILUC estimates, this paper creates a new global data set of SOC by combining the latest version of the HWSD (V.2.0) with newly available national soil maps for the USA and Australia. Using this new data set, we then calculate the average SOC for each land cover type (cropland, pasture, and forest) by country and by agro-ecological zones (AEZs). Furthermore, we revised AEZ-EF model to adopt the new SOC data by land types. Finally, the revised AEZ-EF model is used to assess ILUC emissions for a few biofuel pathways to demonstrate the extent to which the new SOC data may affect ILUC emissions. The results of this paper indicate that the newest version of the HWSD represents a lower level of SOC at the global scale compared to its older version. The results also show that the revised AEZ-EF model calculates relatively lower ILUC emissions for the examined pathways compared to its older version. AB - This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Please cite this article as: Lauren Benavidez-Brouk et al 2026 Environ. Res. Commun. 8 025013. https://doi.org/10.1088/2515-7620/ae3d84 AN - dot:89728 DO - https://doi.org/10.1088/2515-7620/ae3d84 KW - Land use KW - Pollutants KW - Environmental impacts KW - Soil remediation KW - Biomass fuels KW - ASCENT LA - English PB - IOP Publishing PY - 2026-02-01 SN - ERC8 025013 TI - Updates in Assessing Soil Organic Carbon and Their Implications for Evaluating Land Use Change Emissions M3 - Journal Article N1 - United States N1 - 13-C-AJFE-PU-058 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/89728 ER -
Integrated Digital Project Delivery

United States. Department of Transportation. Federal Highway Administration

2026-02-23 | PDF

Despite the widespread use of basic digital tools, many transportation projects still face delays and data gaps throughout the planning, development, and maintenance process. The current paper and PDF-based workflows require staff to manually re-enter the same information into multiple systems. This increases the risk of errors and slows down proje ...

03/30/2026

Title : Integrated Digital Project Delivery Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Federal Highway Administration. Center for Accelerating Innovation Contributor(s) : Gray, James;Corrigan, Matthew; Published Date : 2026-02-23 Report Number : FHWA-26-CAI-004 URL : https://rosap.ntl.bts.gov/view/dot/89727 United States. Department of Transportation. Federal Highway Administration (2026). Integrated Digital Project Delivery. United States. Department of Transportation. Federal Highway Administration "Integrated Digital Project Delivery" (2026) United States. Department of Transportation. Federal Highway Administration "Integrated Digital Project Delivery" , 2026 Export RIS Citation Information. TY - Brief A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Federal Highway Administration. Center for Accelerating Innovation A4 - Gray, James A4 - Corrigan, Matthew AB - Despite the widespread use of basic digital tools, many transportation projects still face delays and data gaps throughout the planning, development, and maintenance process. The current paper and PDF-based workflows require staff to manually re-enter the same information into multiple systems. This increases the risk of errors and slows down project updates. Important data for bridges, pavements, and utilities is often stored in separate databases, making it hard to find one shared, reliable source of information. In addition, many State agencies’ software systems used for design, construction, and asset management, do not work well together, limiting the ability to share 3D models. Outdated survey and design manuals fail to reflect current tools and technologies like LiDAR, 3D modeling, and Unmanned Aerial Systems (UAS). The Integrated Digital Project Delivery initiative addresses these challenges by creating a connected, consistent approach to managing project data from early planning to long-term maintenance. AN - dot:89727 KW - Integrated project delivery KW - Project management KW - Data management KW - Data sharing LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2026-02-23 SN - FHWA-26-CAI-004 TI - Integrated Digital Project Delivery M3 - Brief N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/89727 ER -
Spray and Soot Characteristics of Liquid Spray Flames in a High-Pressure Sector Combustor

Vishwanath, Rahul ;

Olimid, Dominic

2025-03-01 | PDF

Conventional aviation combustors use liquid fuels where spray atomization is important for efficient combustion process and resultant emissions. In this study, a three-sector combustor with commercial pre-filming air blast injectors is utilized to analyze the effect of operating conditions on spray and soot formation. Measurements are performed wit ...

03/30/2026

Title : Spray and Soot Characteristics of Liquid Spray Flames in a High-Pressure Sector Combustor Creator(s) : Vishwanath, Rahul;Olimid, Dominic;Douglas, Eric;Bibik, Oleksandr;Wehe, Shawn;Mazumdar, Yi Chen;Steinberg, Adam;Sun, Wenting; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Georgia Institute of Technology; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-03-01 Report Number : 1C09-110490475 URL : https://rosap.ntl.bts.gov/view/dot/89726 Vishwanath, Rahul et al. (2025). Spray and Soot Characteristics of Liquid Spray Flames in a High-Pressure Sector Combustor. Vishwanath, Rahul et al. "Spray and Soot Characteristics of Liquid Spray Flames in a High-Pressure Sector Combustor" (2025) Vishwanath, Rahul et al. "Spray and Soot Characteristics of Liquid Spray Flames in a High-Pressure Sector Combustor" , 2025 Export RIS Citation Information. TY - Proceedings AU - Vishwanath, Rahul AU - Olimid, Dominic AU - Douglas, Eric AU - Bibik, Oleksandr AU - Wehe, Shawn AU - Mazumdar, Yi Chen AU - Steinberg, Adam AU - Sun, Wenting A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Georgia Institute of Technology A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Conventional aviation combustors use liquid fuels where spray atomization is important for efficient combustion process and resultant emissions. In this study, a three-sector combustor with commercial pre-filming air blast injectors is utilized to analyze the effect of operating conditions on spray and soot formation. Measurements are performed with both Jet-A and sustainable aviation fuel (SAF) at different operating pressures, preheat temperatures and global equivalence ratios. Phase Doppler particle anemometry is utilized to measure instantaneous drop-sizes in both non-reacting and reacting conditions. Instantaneous soot particle temperature and soot volume fraction distributions were measured in the primary zone of the combustor using two-color planar auto-compensating laser induced incandescence for both Jet-A and SAF flames. The drop-sizes shifted towards larger diameters for reacting conditions compared to non-reacting flow, possibly indicating the complete evaporation of smaller droplets at a given operating condition. In comparison to Jet-A, SAF fuel spray produced slightly smaller droplets owing to its reduced surface tension and higher vapor pressure values. The maximum averaged SVF were observed to be along the main reaction zone with values around 5 ppm for Jet-A flames at the operated conditions. For the SAF flames at the same conditions, the averaged SVF reduced by almost 2-3 times compared to Jet-A flames. AN - dot:89726 KW - Aviation KW - Flammability KW - Chemical sprays KW - Chemical dispersions KW - Doppler effect KW - Lasers KW - ASCENT KW - swirl-stabilized Jet-A/SAF flames KW - soot in high pressure Jet-A flames KW - spray atomization KW - phase Doppler anemometry KW - laser induced incandescence LA - English PB - Eastern States Section of the Combustion Institute PY - 2025-03-01 SN - 1C09-110490475 TI - Spray and Soot Characteristics of Liquid Spray Flames in a High-Pressure Sector Combustor M3 - Proceedings N1 - United States N1 - 13-C-AJFE-GIT-080 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/89726 ER -
Contrail Observation Limitations Using Geostationary Satellites

Euchenhofer, Marlene V. ;

Prashanth, Prakash

2025-11-01 | PDF

Contrails are a significant contributor to aviation's climate impact with an effective radiative forcing similar to that from aviation's CO2 emissions, yet large uncertainties remain. Many observational contrail studies rely on data from a single sensor, in recent years increasingly from a geostationary imager, accepting lower spatial resolution in ...

03/30/2026

Title : Contrail Observation Limitations Using Geostationary Satellites Creator(s) : Euchenhofer, Marlene V.;Prashanth, Prakash;Parke, Sydney A.;Eastham, Sebastian D.;Waitz, Ian A.; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Massachusetts Institute of Technology; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-11-01 Report Number : 2025GL118386 DOI : https://doi.org/10.1029/2025GL118386 Euchenhofer, Marlene V. et al. (2025). Contrail Observation Limitations Using Geostationary Satellites. https://doi.org/10.1029/2025GL118386 Euchenhofer, Marlene V. et al. "Contrail Observation Limitations Using Geostationary Satellites" (2025), https://doi.org/10.1029/2025GL118386 Euchenhofer, Marlene V. et al. "Contrail Observation Limitations Using Geostationary Satellites" , 2025, https://doi.org/10.1029/2025GL118386 Export RIS Citation Information. TY - Journal Article AU - Euchenhofer, Marlene V. AU - Prashanth, Prakash AU - Parke, Sydney A. AU - Eastham, Sebastian D. AU - Waitz, Ian A. A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Massachusetts Institute of Technology A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Contrails are a significant contributor to aviation's climate impact with an effective radiative forcing similar to that from aviation's CO2 emissions, yet large uncertainties remain. Many observational contrail studies rely on data from a single sensor, in recent years increasingly from a geostationary imager, accepting lower spatial resolution in exchange for higher temporal and spatial coverage. However, the ability of geostationary imagery to resolve contrails has not been systematically characterized. By comparing higher spatial resolution low Earth orbit satellite imagery from Visual Infrared Imaging Radiometer Suite (VIIRS) to geostationary satellite imagery from GOES ABI, we show that the latter does not resolve 80% of the contrails nor half of the total length compared to contrails identified with VIIRS. Our findings underscore the need for multi‐sensor approaches to collect observational contrail data for improved validation of climate models and to enable more rigorous and verifiable contrail avoidance strategies. AB - This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Please cite this article as: Euchenhofer, M. V., Prashanth, P., Parke, S. A., Eastham, S. D., & Waitz, I. A. (2025). Contrail observation limitations using geostationary satellites. Geophysical Research Letters, 52, e2025GL118386. https://doi.org/10.1029/2025GL118386 AN - dot:89725 DO - https://doi.org/10.1029/2025GL118386 KW - Aircraft KW - Aircraft exhaust gases KW - Navigational satellites KW - Climate KW - ASCENT KW - geostationary satellites LA - English PB - Wiley Periodicals LLC PY - 2025-11-01 SN - 2025GL118386 TI - Contrail Observation Limitations Using Geostationary Satellites M3 - Journal Article N1 - United States N1 - 13-C-AJFE-MIT-086 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/89725 ER -
Security Defense of Transportation Networks Against Cyberattacks: A Physics-Informed AI Approach

Kim, Yongju

;

Chen, Sikai

2026-03-01 | PDF

Connected and automated vehicles (CAVs) rely on digitally acquired traffic state information for real-time maneuver decisions, making them vulnerable to cyberattacks that manipulate perceived traffic states or communication channels. Such manipulation can subtly alter vehicle behavior and, in interactive traffic environments, may propagate disturba ...

03/30/2026

Title : Security Defense of Transportation Networks Against Cyberattacks: A Physics-Informed AI Approach Creator(s) : Kim, Yongju;Chen, Sikai;Ahn, Soyoung (Sue);Chitturi, Madhav;Noyce, David A.; Corporate Creator(s) : Center for Connected and Automated Transportation (CCAT);University of Wisconsin--Madison; Corporate Contributor(s) : United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2026-03-01 Report Number : GR000034957 URL : https://rosap.ntl.bts.gov/view/dot/89724 Kim, Yongju et al. (2026). Security Defense of Transportation Networks Against Cyberattacks: A Physics-Informed AI Approach. Kim, Yongju et al. "Security Defense of Transportation Networks Against Cyberattacks: A Physics-Informed AI Approach" (2026) Kim, Yongju et al. "Security Defense of Transportation Networks Against Cyberattacks: A Physics-Informed AI Approach" , 2026 Export RIS Citation Information. TY - Tech Report AU - Kim, Yongju AU - Chen, Sikai AU - Ahn, Soyoung (Sue) AU - Chitturi, Madhav AU - Noyce, David A. A2 - Center for Connected and Automated Transportation (CCAT) A2 - University of Wisconsin--Madison A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - Connected and automated vehicles (CAVs) rely on digitally acquired traffic state information for real-time maneuver decisions, making them vulnerable to cyberattacks that manipulate perceived traffic states or communication channels. Such manipulation can subtly alter vehicle behavior and, in interactive traffic environments, may propagate disturbances beyond the attacked vehicle. The objective of this study is to develop frameworks for (i) detecting abnormal lane-changing under cyberattacks and (ii) enabling robust decision-making under adversarial conditions. For detection, a physics-guided neural network integrating a game-theoretic lane-changing model with LSTM learning is developed and evaluated using the I-24 MOTION dataset under simulated false data injection and denial-of-service attacks. Results show improved prediction accuracy and effective detection of falsified lane-changing behaviors. For robust control, a hierarchical adversarial reinforcement learning framework is proposed for discretionary lane-changing under bounded perturbations. Simulation results indicate improved traffic efficiency while maintaining safety under worst-case perturbations. These findings provide a modeling foundation for cybersecurity-aware monitoring and robust tactical decision-making in CAV systems. AN - dot:89724 ET - Final report (April 2024 – March 2026) KW - Connected vehicles KW - Intelligent transportation systems KW - Computer security KW - Lane changing KW - Detectors KW - Neural networks KW - Decision making KW - Simulation KW - Evaluation KW - Data access control KW - Communication devices KW - Anomaly detection KW - Physics-guided neural network KW - Adversarial reinforcement learning LA - English PB - University of Michigan. Center for Connected and Automated Transportation PY - 2026-03-01 SN - GR000034957 TI - Security Defense of Transportation Networks Against Cyberattacks: A Physics-Informed AI Approach M3 - Tech Report N1 - United States N1 - 69A3552348305 UR - https://rosap.ntl.bts.gov/view/dot/89724 ER -
Benchmarking Computer Vision-Based Approaches To Derive Engineering-Oriented Condition From Existing UDOT Assets Data

Pandey, Shailaja Ratna ;

Esteghamati, Mohsen Zaker

2025-02-01 | PDF

Condition assessment of how transportation infrastructure supports safe and reliable road and highway operation. Departments of Transportation across the country rely heavily on manual inspections, which are time-consuming and costly. This study evaluated whether modern computer vision (CV) methods can support traffic sign condition assessment alon ...

03/30/2026

Title : Benchmarking Computer Vision-Based Approaches To Derive Engineering-Oriented Condition From Existing UDOT Assets Data Creator(s) : Pandey, Shailaja Ratna;Esteghamati, Mohsen Zaker; Corporate Creator(s) : Utah State University. Department of Civil and Environmental Engineering Corporate Contributor(s) : Utah. Department of Transportation. Research and Innovation Division;United States. Department of Transportation. Federal Highway Administration; Published Date : 2025-02-01 Report Number : UT- 26.03 URL : https://rosap.ntl.bts.gov/view/dot/89723 Pandey, Shailaja Ratna and Esteghamati, Mohsen Zaker (2025). Benchmarking Computer Vision-Based Approaches To Derive Engineering-Oriented Condition From Existing UDOT Assets Data. Pandey, Shailaja Ratna and Esteghamati, Mohsen Zaker "Benchmarking Computer Vision-Based Approaches To Derive Engineering-Oriented Condition From Existing UDOT Assets Data" (2025) Pandey, Shailaja Ratna and Esteghamati, Mohsen Zaker "Benchmarking Computer Vision-Based Approaches To Derive Engineering-Oriented Condition From Existing UDOT Assets Data" , 2025 Export RIS Citation Information. TY - Tech Report AU - Pandey, Shailaja Ratna AU - Esteghamati, Mohsen Zaker A2 - Utah State University. Department of Civil and Environmental Engineering A3 - Utah. Department of Transportation. Research and Innovation Division A3 - United States. Department of Transportation. Federal Highway Administration AB - Condition assessment of how transportation infrastructure supports safe and reliable road and highway operation. Departments of Transportation across the country rely heavily on manual inspections, which are time-consuming and costly. This study evaluated whether modern computer vision (CV) methods can support traffic sign condition assessment along Utah highways. High-resolution roadway images collected using a camera-mounted vehicle were curated and annotated for three sign types (regulatory, warning, and guide) and four defect conditions (fading, delamination, missing letters/symbols, and broken signs) based on the Manual on Uniform Traffic Control Devices (MUTCD) standards. This study compared two different CV algorithms of YOLO11 and RT-DETR for traffic-sign detection and defect classification. Overall, the CV models showed promising performance for defect cases where an adequate number of training data existed. For example, for fading, YOLO11 and RT-DETR achieved 75% F1 on the validation. Binary classification of delamination (i.e., delamination versus no delamination) yielded similar performance for both models (68% F1). In contrast, the models showed poor performance to identify missing letters/symbols due to texture overlap with delamination and a limited number of annotated sign images with such defects. The results suggested that data quality and label definition had a greater impact on model performance than the choice of algorithms for the studied models. AN - dot:89723 ET - Final Report: July 2024 to Dec 2025 KW - Traffic signs KW - Assessments KW - Computer vision KW - Object detection KW - Optical devices KW - Transformers KW - Evaluation KW - Cameras KW - Data analysis KW - Algorithms KW - Delamination KW - Benchmarks KW - Performance KW - Assets KW - Traffic sign condition assessment KW - Computer vision KW - Object detection KW - YOLO11 KW - Vision transformers KW - MUTCD LA - English PB - Utah Department of Transportation PY - 2025-02-01 SN - UT- 26.03 TI - Benchmarking Computer Vision-Based Approaches To Derive Engineering-Oriented Condition From Existing UDOT Assets Data M3 - Tech Report N1 - United States N1 - 25-8073 UR - https://rosap.ntl.bts.gov/view/dot/89723 ER -
What Holds High-Speed Rail Back: Lessons From Global Systems and California’s Experience [Research Brief]

Sharma, Deepak K. ;

Lekhi, Rajnish

2026-03-01 | PDF

California High-Speed Rail (CHSR) has been under development for more than a decade, yet progress has been slowed by delays, cost escalation, and unstable funding. This research examined the main barriers to timely and cost-effective delivery of CHSR and identified lessons that can guide future high-speed rail (HSR) projects in California. The stud ...

03/30/2026

Title : What Holds High-Speed Rail Back: Lessons From Global Systems and California’s Experience [Research Brief] Creator(s) : Sharma, Deepak K.;Lekhi, Rajnish;Parr, Scott A.; Corporate Creator(s) : San Jose State University. College of Business. Mineta Transportation Institute;California State University, Fullerton; Corporate Contributor(s) : State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration;United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2026-03-01 Report Number : 2470 URL : https://rosap.ntl.bts.gov/view/dot/89722 Sharma, Deepak K. et al. (2026). What Holds High-Speed Rail Back: Lessons From Global Systems and California’s Experience [Research Brief]. Sharma, Deepak K. and Lekhi, Rajnish and Parr, Scott A. "What Holds High-Speed Rail Back: Lessons From Global Systems and California’s Experience [Research Brief]" (2026) Sharma, Deepak K. et al. "What Holds High-Speed Rail Back: Lessons From Global Systems and California’s Experience [Research Brief]" , 2026 Export RIS Citation Information. TY - Brief AU - Sharma, Deepak K. AU - Lekhi, Rajnish AU - Parr, Scott A. A2 - San Jose State University. College of Business. Mineta Transportation Institute A2 - California State University, Fullerton A3 - State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - California High-Speed Rail (CHSR) has been under development for more than a decade, yet progress has been slowed by delays, cost escalation, and unstable funding. This research examined the main barriers to timely and cost-effective delivery of CHSR and identified lessons that can guide future high-speed rail (HSR) projects in California. The study asked: Why has CHSR struggled to advance as planned, and what changes are needed to improve outcomes? To answer this, we compared CHSR with international HSR projects, studied Japan’s land readjustment approach, reviewed U.S. rail integration practices, analyzed California’s transportation legislation, and examined oversight reports and expert interviews. The results show that CHSR’s biggest barriers are structural, not technical. Stable funding, stronger governance, and legal reforms are needed to keep projects on schedule and advance mobility in the Golden State. AN - dot:89722 ET - Research Brief KW - High speed rail KW - Passenger trains KW - Railroad transportation KW - Lessons learned KW - Property acquisition KW - Interviewing KW - Land KW - Financing KW - Bridges KW - Highways KW - Costs KW - Legislation LA - English PB - San Jose State University. College of Business. Mineta Transportation Institute PY - 2026-03-01 SN - 2470 TI - What Holds High-Speed Rail Back: Lessons From Global Systems and California’s Experience [Research Brief] M3 - Brief N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89722 ER -
Highway Construction Workforce Partnership: Strategic Workforce Development: Training Tomorrow's Highway Construction Leaders

United States. Department of Transportation. Federal Highway Administration

2021-08-11 | PDF

Building a strong, capable highway construction workforce that supports the nation's transportation industry and drives the economy forward requires a solid foundation. The U.S. Department of Transportation’s Federal Highway Administration (FHWA) established the Highway Construction Workforce Partnership (HCWP) to help train qualified individuals a ...

03/30/2026

Title : Highway Construction Workforce Partnership: Strategic Workforce Development: Training Tomorrow's Highway Construction Leaders Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Contributor(s) : Chong, Michael;Foster, Corey;Albright, James;Chavez, Robert;Bird, Patty;Gottschalk, Bob; Published Date : 2021-08-11 URL : https://rosap.ntl.bts.gov/view/dot/89721 United States. Department of Transportation. Federal Highway Administration (2021). Highway Construction Workforce Partnership: Strategic Workforce Development: Training Tomorrow's Highway Construction Leaders. United States. Department of Transportation. Federal Highway Administration "Highway Construction Workforce Partnership: Strategic Workforce Development: Training Tomorrow's Highway Construction Leaders" (2021) United States. Department of Transportation. Federal Highway Administration "Highway Construction Workforce Partnership: Strategic Workforce Development: Training Tomorrow's Highway Construction Leaders" , 2021 Export RIS Citation Information. TY - Brief A2 - United States. Department of Transportation. Federal Highway Administration A4 - Chong, Michael A4 - Foster, Corey A4 - Albright, James A4 - Chavez, Robert A4 - Bird, Patty A4 - Gottschalk, Bob AB - Building a strong, capable highway construction workforce that supports the nation's transportation industry and drives the economy forward requires a solid foundation. The U.S. Department of Transportation’s Federal Highway Administration (FHWA) established the Highway Construction Workforce Partnership (HCWP) to help train qualified individuals and place them into needed roles. HCWPs in Arizona, Los Angeles, Pittsburgh, and Rhode Island are teaming up with organizations like the National Center for Construction Education & Research (NCCER) and the Pittsburgh Job Corps Center to prepare tomorrow’s workforce to excel in highway construction apprenticeship programs that launch lasting careers. AN - dot:89721 KW - Education and training KW - Training KW - Road construction KW - Road construction industry KW - Transportation careers LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2021-08-11 TI - Highway Construction Workforce Partnership: Strategic Workforce Development: Training Tomorrow's Highway Construction Leaders M3 - Brief N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/89721 ER -
Microphysical Modeling & Analysis of ACCESS 2 Aviation Exhaust Observations

Jacobson, Mark Z. ;

Lele, Sanjiva K.

2016-12-15 | PDF

As the popularity of and global access to air travel expands, quantifying its impact on climate and air pollution becomes increasingly important. However, the spatial-temporal distribution of aircraft emissions and their byproducts span many orders of magnitude, as contrail development begins within seconds, but can spread to the kilometer-scale an ...

03/30/2026

Title : Microphysical Modeling & Analysis of ACCESS 2 Aviation Exhaust Observations Creator(s) : Jacobson, Mark Z.;Lele, Sanjiva K.; Corporate Creator(s) : Stanford University Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy; Published Date : 2016-12-15 URL : https://rosap.ntl.bts.gov/view/dot/89720 Jacobson, Mark Z. and Lele, Sanjiva K. (2016). Microphysical Modeling & Analysis of ACCESS 2 Aviation Exhaust Observations. Jacobson, Mark Z. and Lele, Sanjiva K. "Microphysical Modeling & Analysis of ACCESS 2 Aviation Exhaust Observations" (2016) Jacobson, Mark Z. and Lele, Sanjiva K. "Microphysical Modeling & Analysis of ACCESS 2 Aviation Exhaust Observations" , 2016 Export RIS Citation Information. TY - Tech Report AU - Jacobson, Mark Z. AU - Lele, Sanjiva K. A2 - Stanford University A3 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - As the popularity of and global access to air travel expands, quantifying its impact on climate and air pollution becomes increasingly important. However, the spatial-temporal distribution of aircraft emissions and their byproducts span many orders of magnitude, as contrail development begins within seconds, but can spread to the kilometer-scale and persist for hours. The wide range of spatial and temporal scales makes it difficult to obtain detailed knowledge of the composition and evolution of emissions from measurements or modeling studies alone. In an attempt to increase understanding, this project simulates the short-term, near- and far-field evolution of aircraft exhaust aerosol and contrail particles and gases with two computer models: GATOR-GCMOM and an LES model. Together, these two models simulate phenomena spanning a spatial range from millimeters to thousands of kilometers. Detailed microphysical processes in the models are validated and improved with field measurements from NASA’s ACCESS-2 campaign, so that the models may provide more credible estimates of impacts on climate and atmospheric composition when used at the regional and global scale. AN - dot:89720 ET - Final Report KW - Pollutants KW - Aircraft exhaust gases KW - Environmental impacts KW - Environmental impact analysis KW - ASCENT LA - English PB - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment PY - 2016-12-15 TI - Microphysical Modeling & Analysis of ACCESS 2 Aviation Exhaust Observations M3 - Tech Report N1 - United States N1 - 13-C-AJFE-SU-002 UR - https://rosap.ntl.bts.gov/view/dot/89720 ER -
Evaluation of Wind-Loading on Airport Signs

Bagot, Keith

2000-06-01 | PDF

Airport signs at certain critical locations at O’Hare International Airport and other major U.S. airports are being sheared off their mounting legs at the frangible coupling from aircraft jet engine blast and/or wake turbulence forces. his damage to the sign increases the chance of foreign object damage (FOD) as well as the loss of visual guidance ...

03/30/2026

Title : Evaluation of Wind-Loading on Airport Signs Creator(s) : Bagot, Keith Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Aviation Research Published Date : 2000-06-01 Report Number : DOT/FAA/AR-TN00/32 URL : https://rosap.ntl.bts.gov/view/dot/89719 Bagot, Keith (2000). Evaluation of Wind-Loading on Airport Signs. Bagot, Keith "Evaluation of Wind-Loading on Airport Signs" (2000) Bagot, Keith "Evaluation of Wind-Loading on Airport Signs" , 2000 Export RIS Citation Information. TY - Tech Report AU - Bagot, Keith A2 - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Aviation Research AB - Airport signs at certain critical locations at O’Hare International Airport and other major U.S. airports are being sheared off their mounting legs at the frangible coupling from aircraft jet engine blast and/or wake turbulence forces. his damage to the sign increases the chance of foreign object damage (FOD) as well as the loss of visual guidance for other aircraft. here is a need to better understand and more precisely determine the forces on the signs at these locations. The results of this testing indicated that the current frangibility design criteria is not adequate for airport signs installed on airports that service large transport aircraft. modification to the frangibility requirements or a maximum setback distance would appear to be a satisfactory solution to mitigate sign breakage. he former is recommended since it would appear to have no impact on the operational characteristics of the aircraft movement area. AN - dot:89719 ET - Technical Note KW - Airport surface traffic control KW - Design KW - Jet engines KW - Sign supports KW - Signs KW - Visual aids LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 2000-06-01 SN - DOT/FAA/AR-TN00/32 TI - Evaluation of Wind-Loading on Airport Signs M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89719 ER -
Strategic Workforce Development: Case Study: Focus on Innovation: Advanced Digital Construction Management Systems

United States. Department of Transportation. Federal Highway Administration

2025-09-10 | PDF

Advanced Digital Construction Management Systems (ADCMS) are an important part of the Federal Highway Administration’s (FHWA) ongoing, strategic effort to share innovative project delivery practices with State and other transportation agencies. ADCMS are technologies and processes that include systems for infrastructure planning and coordination, d ...

03/30/2026

Title : Strategic Workforce Development: Case Study: Focus on Innovation: Advanced Digital Construction Management Systems Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Contributor(s) : Currier, Chrisy Published Date : 2025-09-10 URL : https://rosap.ntl.bts.gov/view/dot/89718 United States. Department of Transportation. Federal Highway Administration (2025). Strategic Workforce Development: Case Study: Focus on Innovation: Advanced Digital Construction Management Systems. United States. Department of Transportation. Federal Highway Administration "Strategic Workforce Development: Case Study: Focus on Innovation: Advanced Digital Construction Management Systems" (2025) United States. Department of Transportation. Federal Highway Administration "Strategic Workforce Development: Case Study: Focus on Innovation: Advanced Digital Construction Management Systems" , 2025 Export RIS Citation Information. TY - Brief A2 - United States. Department of Transportation. Federal Highway Administration A4 - Currier, Chrisy AB - Advanced Digital Construction Management Systems (ADCMS) are an important part of the Federal Highway Administration’s (FHWA) ongoing, strategic effort to share innovative project delivery practices with State and other transportation agencies. ADCMS are technologies and processes that include systems for infrastructure planning and coordination, design, construction, maintenance, modernization and management, and asset management. Through its ADCMS Program, FHWA offers grants to help State departments of transportation (DOT) adopt advanced technology that can be used throughout various parts of the construction lifecycle. AN - dot:89718 KW - Infrastructure KW - Construction management KW - Project delivery KW - Transportation planning LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2025-09-10 TI - Strategic Workforce Development: Case Study: Focus on Innovation: Advanced Digital Construction Management Systems M3 - Brief N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/89718 ER -
Highway Construction Workforce Partnership: Strategic Workforce Development: Regional Working Groups Collaborate to Combat Shortages in Highway Construction Workforce

United States. Department of Transportation. Federal Highway Administration

2021-06-30 | PDF

Across the nation, there is a shortage of highway construction workers, who keep the transportation industry and economy moving forward. The U.S. Department of Transportation's Federal Highway Administration (FHWA) partnered with other key national highway organizations and the Employment and Training Administration to establish the Highway Constru ...

03/30/2026

Title : Highway Construction Workforce Partnership: Strategic Workforce Development: Regional Working Groups Collaborate to Combat Shortages in Highway Construction Workforce Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Contributor(s) : Pavlik, Monica;Chong, Michael;James, Stephanie;Caliendo, Michael; Published Date : 2021-06-30 URL : https://rosap.ntl.bts.gov/view/dot/89717 United States. Department of Transportation. Federal Highway Administration (2021). Highway Construction Workforce Partnership: Strategic Workforce Development: Regional Working Groups Collaborate to Combat Shortages in Highway Construction Workforce. United States. Department of Transportation. Federal Highway Administration "Highway Construction Workforce Partnership: Strategic Workforce Development: Regional Working Groups Collaborate to Combat Shortages in Highway Construction Workforce" (2021) United States. Department of Transportation. Federal Highway Administration "Highway Construction Workforce Partnership: Strategic Workforce Development: Regional Working Groups Collaborate to Combat Shortages in Highway Construction Workforce" , 2021 Export RIS Citation Information. TY - Brief A2 - United States. Department of Transportation. Federal Highway Administration A4 - Pavlik, Monica A4 - Chong, Michael A4 - James, Stephanie A4 - Caliendo, Michael AB - Across the nation, there is a shortage of highway construction workers, who keep the transportation industry and economy moving forward. The U.S. Department of Transportation's Federal Highway Administration (FHWA) partnered with other key national highway organizations and the Employment and Training Administration to establish the Highway Construction Workforce Partnership (HCWP). The partnership brings highway construction, education, and workforce interests together at state and local levels to identify, train, and place individuals into trade occupations to fill industry workforce gaps. The programs are managed by the partner working groups that identify workforce needs and resources. HCWPs in Alabama, Denver, Idaho, and Rhode Island have launched successful working groups. AN - dot:89717 KW - Education and training KW - Training KW - Road construction KW - Road construction industry KW - Transportation careers LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2021-06-30 TI - Highway Construction Workforce Partnership: Strategic Workforce Development: Regional Working Groups Collaborate to Combat Shortages in Highway Construction Workforce M3 - Brief N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/89717 ER -
Evaluating the Performance of Novel TPMS-Based Acoustic Liner Designs Suitable for Additive Manufacturing

Packer, Alden ;

Reimann, C. Aaron

2025-08-01 | PDF

Acoustic liners are integral to the noise management of aircraft engines. As such, acoustic liner designs and configurations are the subject of research and development to address the acoustic requirements of novel engine layouts. Perforate sheet over honeycomb core, or single degree of freedom (SDOF), liners are the traditional system that has bee ...

03/30/2026

Title : Evaluating the Performance of Novel TPMS-Based Acoustic Liner Designs Suitable for Additive Manufacturing Creator(s) : Packer, Alden;Reimann, C. Aaron;Winkler, Julian;Homma, Kenji;Mendoza, Jeffrey;Greenwood, Eric;Manahan, Michael;Meisel, Nicholas; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Pennsylvania State University; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-08-01 Report Number : Packer_SFF_2025 URL : https://rosap.ntl.bts.gov/view/dot/89716 Packer, Alden et al. (2025). Evaluating the Performance of Novel TPMS-Based Acoustic Liner Designs Suitable for Additive Manufacturing. Packer, Alden et al. "Evaluating the Performance of Novel TPMS-Based Acoustic Liner Designs Suitable for Additive Manufacturing" (2025) Packer, Alden et al. "Evaluating the Performance of Novel TPMS-Based Acoustic Liner Designs Suitable for Additive Manufacturing" , 2025 Export RIS Citation Information. TY - Proceedings AU - Packer, Alden AU - Reimann, C. Aaron AU - Winkler, Julian AU - Homma, Kenji AU - Mendoza, Jeffrey AU - Greenwood, Eric AU - Manahan, Michael AU - Meisel, Nicholas A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Pennsylvania State University A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Acoustic liners are integral to the noise management of aircraft engines. As such, acoustic liner designs and configurations are the subject of research and development to address the acoustic requirements of novel engine layouts. Perforate sheet over honeycomb core, or single degree of freedom (SDOF), liners are the traditional system that has been used in the past, while more advanced double degree of freedom (DDOF) liners are the state-of-the-art liners currently implemented in aircraft engines. Leveraging the design freedom of additive manufacturing, our current research explores the use of TPMS lattice structures as an advanced core structure for acoustic liners. In this study, previously developed design exploration methods have been implemented to compare the performance of novel TPMS acoustic liners with the SDOF and DDOF liners. Performance comparisons between the acoustic liner types demonstrate the viability of the TPMS lattice liner as a viable alternative to standard designs, meriting further refinement and exploration. AN - dot:89716 KW - Acoustics KW - Three dimensional printing KW - Noise control KW - Aviation KW - Manufacturing KW - ASCENT KW - Additive manufacturing LA - English PB - The Minerals, Metals & Materials Society (TMS) PY - 2025-08-01 SN - Packer_SFF_2025 TI - Evaluating the Performance of Novel TPMS-Based Acoustic Liner Designs Suitable for Additive Manufacturing M3 - Proceedings N1 - United States N1 - 13-C-AJFE-PSU-113 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/89716 ER -
Evaluation and Development of Cost Prediction Models for Resurfacing Projects To Improve M&R Analysis and Project Development

Shrestha, K. Joseph ;

Uddin, Mohammad Moin

2025-08-01 | PDF

Accurate preliminary cost estimates for resurfacing projects are essential to conduct a reliable Maintenance & Rehabilitation (M&R) analysis, prioritize projects, and optimize the use of available budget. However, TDOT is currently using an outdated cost per lane mile data for such analysis, and hence the results of such analysis can be less reliab ...

03/30/2026

Title : Evaluation and Development of Cost Prediction Models for Resurfacing Projects To Improve M&R Analysis and Project Development Creator(s) : Shrestha, K. Joseph;Uddin, Mohammad Moin;Iyiola, David;Paul, Pritom; Corporate Creator(s) : East Tennessee State University Corporate Contributor(s) : Tennessee. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2025-08-01 Report Number : RES2024-08 URL : https://rosap.ntl.bts.gov/view/dot/89715 Shrestha, K. Joseph et al. (2025). Evaluation and Development of Cost Prediction Models for Resurfacing Projects To Improve M&R Analysis and Project Development. Shrestha, K. Joseph et al. "Evaluation and Development of Cost Prediction Models for Resurfacing Projects To Improve M&R Analysis and Project Development" (2025) Shrestha, K. Joseph et al. "Evaluation and Development of Cost Prediction Models for Resurfacing Projects To Improve M&R Analysis and Project Development" , 2025 Export RIS Citation Information. TY - Tech Report AU - Shrestha, K. Joseph AU - Uddin, Mohammad Moin AU - Iyiola, David AU - Paul, Pritom A2 - East Tennessee State University A3 - Tennessee. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - Accurate preliminary cost estimates for resurfacing projects are essential to conduct a reliable Maintenance & Rehabilitation (M&R) analysis, prioritize projects, and optimize the use of available budget. However, TDOT is currently using an outdated cost per lane mile data for such analysis, and hence the results of such analysis can be less reliable. To address the issue, this study develops a framework and a tangible tool entitled “Resurfacing Cost Prediction (RCP).” This framework and tool require limited project characteristics, such as, project length and location, that are available at the early phase of project development. The validation of the tool achieved 100% compliance for accuracy based on AASHTO Practical Guide for Cost Estimation for three treatment types for planning phase. The study also addresses another issue related to project bundling. TDOT creates bundles of resurfacing projects to attract more contractors, achieve lower cost per lane mile, and reduce administrative burden. However, TDOT lacks a systematic methodology to create project bundles. As such, it relies on manual identification of projects suitable for bundling. This manual approach can be very time-consuming and cumbersome, and it can create inconsistent bundles. To address this issue, an Automated Maintenance Project Bundling (AMPB) tool is developed. The tool was able to achieve up to 92% accuracy in correctly identifying if a project should be bundled or not. These frameworks and tools are expected to aid TDOT in improving the planning and execution of resurfacing projects while optimizing the use of available budget. AN - dot:89715 ET - Final Report: August 2023 - September 2025 KW - Cost estimating KW - Construction projects KW - Evaluation KW - Project management KW - Maintenance KW - Rehabilitation KW - Planning KW - Methodology KW - Cost-estimating-models KW - construction-project-bundling KW - cost-prediction KW - compatibility-scores LA - English PB - Tennessee. Department of Transportation PY - 2025-08-01 SN - RES2024-08 TI - Evaluation and Development of Cost Prediction Models for Resurfacing Projects To Improve M&R Analysis and Project Development M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89715 ER -
Project 045 Takeoff/Climb Analysis to Support AEDT Aircraft Performance Model (APM) Development

Mavris, Dimitri N.

;

Kirby, Michelle R.

2020-03-01 | PDF

Accurate modeling of aircraft performance is a key factor in estimating aircraft noise, emissions, and fuel burn. Within the Aviation Environmental Design Tool (AEDT), many assumptions are made for aircraft performance modeling with respect to aircraft weight and departure procedure, coupled with aircraft departure typically being modeled by assumi ...

03/30/2026

Title : Project 045 Takeoff/Climb Analysis to Support AEDT Aircraft Performance Model (APM) Development Creator(s) : Mavris, Dimitri N.;Kirby, Michelle R.;Li, Yongchang;Puranik, Tejas;Lim, Don;Gao, Zhenyu;Jin, Yee Chan;Monteiro, Dylan;Gabrielian, Ana;Isakson, Loren; Corporate Creator(s) : Georgia Institute of Technology. School of Aerospace Engineering Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy; Published Date : 2020-03-01 URL : https://rosap.ntl.bts.gov/view/dot/89714 Mavris, Dimitri N. et al. (2020). Project 045 Takeoff/Climb Analysis to Support AEDT Aircraft Performance Model (APM) Development. Mavris, Dimitri N. et al. "Project 045 Takeoff/Climb Analysis to Support AEDT Aircraft Performance Model (APM) Development" (2020) Mavris, Dimitri N. et al. "Project 045 Takeoff/Climb Analysis to Support AEDT Aircraft Performance Model (APM) Development" , 2020 Export RIS Citation Information. TY - Tech Report AU - Mavris, Dimitri N. AU - Kirby, Michelle R. AU - Li, Yongchang AU - Puranik, Tejas AU - Lim, Don AU - Gao, Zhenyu AU - Jin, Yee Chan AU - Monteiro, Dylan AU - Gabrielian, Ana AU - Isakson, Loren A2 - Georgia Institute of Technology. School of Aerospace Engineering A3 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - Accurate modeling of aircraft performance is a key factor in estimating aircraft noise, emissions, and fuel burn. Within the Aviation Environmental Design Tool (AEDT), many assumptions are made for aircraft performance modeling with respect to aircraft weight and departure procedure, coupled with aircraft departure typically being modeled by assuming that full rated takeoff power/thrust is used. As operations around airports continue to evolve, there is a need to examine those assumptions and to improve the modeling accuracy with flight data. In recent years, flight data are increasingly being used to enhance models and bring model estimation even closer to reality. Research is needed to build on prior work with a view to develop a robust set of recommendations for improved estimation processes for takeoff weight, reduced thrust takeoffs, and departure profiles within AEDT. During this project, the research provided the FAA with recommendations and an implementation plan to improve the takeoff performance modeling based on real world observations, which ultimately was included in the public release of AEDT3b. AN - dot:89714 KW - Aircraft noise KW - Aircraft operations KW - Fuel consumption KW - Pollutants KW - Software KW - Uncertainty KW - Validation KW - ASCENT LA - English PB - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment PY - 2020-03-01 TI - Project 045 Takeoff/Climb Analysis to Support AEDT Aircraft Performance Model (APM) Development M3 - Tech Report N1 - United States N1 - 13-C-AJFE-GIT-020 UR - https://rosap.ntl.bts.gov/view/dot/89714 ER -
Equity Evaluation of Residents’ Transit + Walk Accessibility to Sacramento Healthcare Facilities

Abadi, Masoud Ghodrat ;

Zandiatashbar, Ahoura

2026-03-01 | PDF

Access to healthcare is a key component of public health equity, yet many U.S. communities remain dependent on private vehicles for medical travel. This study introduces an integrated framework, the Transit+Walk Score (TWS), to evaluate how effectively residents of Sacramento, California, can reach healthcare facilities via public transit and how s ...

03/30/2026

Title : Equity Evaluation of Residents’ Transit + Walk Accessibility to Sacramento Healthcare Facilities Creator(s) : Abadi, Masoud Ghodrat;Zandiatashbar, Ahoura;Pickett, Aaron;Nemett, Stephanie;Sharifi, Soheil; Corporate Creator(s) : San Jose State University. College of Business. Mineta Transportation Institute Corporate Contributor(s) : State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2026-03-01 Report Number : 26-05 DOI : https://doi.org/10.31979/mti.2026.2509 Abadi, Masoud Ghodrat et al. (2026). Equity Evaluation of Residents’ Transit + Walk Accessibility to Sacramento Healthcare Facilities. https://doi.org/10.31979/mti.2026.2509 Abadi, Masoud Ghodrat et al. "Equity Evaluation of Residents’ Transit + Walk Accessibility to Sacramento Healthcare Facilities" (2026), https://doi.org/10.31979/mti.2026.2509 Abadi, Masoud Ghodrat et al. "Equity Evaluation of Residents’ Transit + Walk Accessibility to Sacramento Healthcare Facilities" , 2026, https://doi.org/10.31979/mti.2026.2509 Export RIS Citation Information. TY - Tech Report AU - Abadi, Masoud Ghodrat AU - Zandiatashbar, Ahoura AU - Pickett, Aaron AU - Nemett, Stephanie AU - Sharifi, Soheil A2 - San Jose State University. College of Business. Mineta Transportation Institute A3 - State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - Access to healthcare is a key component of public health equity, yet many U.S. communities remain dependent on private vehicles for medical travel. This study introduces an integrated framework, the Transit+Walk Score (TWS), to evaluate how effectively residents of Sacramento, California, can reach healthcare facilities via public transit and how safely, comfortably, and conveniently they can walk from transit stops to those facilities. The research aims to inform planners, transit agencies, and policymakers in designing equitable and multimodal transportation systems. The research team combined geospatial network modeling and field-based walkability audits to assess 123 healthcare facilities across Sacramento, with 56 sites selected for detailed evaluation using the Pedestrian Environment Data Scan (PEDS) tool. The TWS integrated modeled transit travel times with on-the-ground walkability data to identify areas of high and low accessibility. Findings revealed that Downtown, Midtown, and East Sacramento exhibited the highest multimodal accessibility, while northern Arden-Arcade and outer suburban areas demonstrated the lowest. Educational attainment emerged as the strongest predictor of accessibility, highlighting structural inequities in pedestrian and transit infrastructure. The study concludes that equitable healthcare access requires both reliable transit and safe, continuous pedestrian networks. The TWS offers a scalable, data-driven tool to guide future investments that advance health equity, sustainable transportation, and inclusive community design. AN - dot:89713 DO - https://doi.org/10.31979/mti.2026.2509 KW - Public transit KW - Walkability KW - Health care facilities KW - Access KW - Transportation equity KW - Residents KW - Pedestrians KW - Multimodal transportation KW - Transit operating agencies KW - Pedestrian safety KW - Data analysis KW - Planning KW - Geospatial data KW - Evaluation LA - English PB - San Jose State University. College of Business. Mineta Transportation Institute PY - 2026-03-01 SN - 26-05 TI - Equity Evaluation of Residents’ Transit + Walk Accessibility to Sacramento Healthcare Facilities M3 - Tech Report N1 - United States N1 - SB1-SJAUX_2023-26 UR - https://rosap.ntl.bts.gov/view/dot/89713 ER -
Equity Evaluation of Residents’ Transit+Walk Accessibility to Sacramento Healthcare Facilities [Research Brief]

Abadi, Masoud Ghodrat ;

Zandiatashbar, Ahoura

2026-03-01 | PDF

A visit to almost any healthcare facility in the U.S. reveals a familiar sight: vast parking lots built for cars. This reflects a deeper reality that almost 9 out of 10 healthcare trips in the U.S. rely on private automobiles. Yet this car-dependent model creates serious challenges for people who cannot drive, including many older adults, people wi ...

03/30/2026

Title : Equity Evaluation of Residents’ Transit+Walk Accessibility to Sacramento Healthcare Facilities [Research Brief] Creator(s) : Abadi, Masoud Ghodrat;Zandiatashbar, Ahoura;Pickett, Aaron;Nemett, Stephanie;Sharifi, Soheil; Corporate Creator(s) : San Jose State University. College of Business. Mineta Transportation Institute;California State University Sacramento; Corporate Contributor(s) : State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology;United States. Department of Transportation. University Transportation Centers (UTC) Program; Published Date : 2026-03-01 Report Number : 2509 URL : https://rosap.ntl.bts.gov/view/dot/89712 Abadi, Masoud Ghodrat et al. (2026). Equity Evaluation of Residents’ Transit+Walk Accessibility to Sacramento Healthcare Facilities [Research Brief]. Abadi, Masoud Ghodrat et al. "Equity Evaluation of Residents’ Transit+Walk Accessibility to Sacramento Healthcare Facilities [Research Brief]" (2026) Abadi, Masoud Ghodrat et al. "Equity Evaluation of Residents’ Transit+Walk Accessibility to Sacramento Healthcare Facilities [Research Brief]" , 2026 Export RIS Citation Information. TY - Brief AU - Abadi, Masoud Ghodrat AU - Zandiatashbar, Ahoura AU - Pickett, Aaron AU - Nemett, Stephanie AU - Sharifi, Soheil A2 - San Jose State University. College of Business. Mineta Transportation Institute A2 - California State University Sacramento A3 - State of California SB1 2017/2018, Trustees of the California State University Sponsored Programs Administration A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program AB - A visit to almost any healthcare facility in the U.S. reveals a familiar sight: vast parking lots built for cars. This reflects a deeper reality that almost 9 out of 10 healthcare trips in the U.S. rely on private automobiles. Yet this car-dependent model creates serious challenges for people who cannot drive, including many older adults, people with disabilities, and low-income households. For millions of Americans, transportation barriers delay or prevent access to essential medical care. This project asks a simple but powerful question: without a car, how accessible are healthcare facilities? Focusing on Sacramento, California, the study examines whether public transit and walking infrastructure together provide equitable access to healthcare, particularly for transit dependent and underserved communities. To answer this question, the research introduces a new multimodal metric, the Transit+ Walk Score (TWS), which combines transit accessibility and pedestrian walkability. By evaluating healthcare access through a non-automobile lens, this study reframes transportation planning as both an equity issue and a public health opportunity. AN - dot:89712 ET - Research Brief KW - Public transit KW - Walkability KW - Health care facilities KW - Access KW - Transportation equity KW - Residents KW - Pedestrians KW - Multimodal transportation KW - Transit operating agencies KW - Pedestrian safety KW - Data analysis KW - Planning KW - Geospatial data KW - Evaluation LA - English PB - San Jose State University. College of Business. Mineta Transportation Institute PY - 2026-03-01 SN - 2509 TI - Equity Evaluation of Residents’ Transit+Walk Accessibility to Sacramento Healthcare Facilities [Research Brief] M3 - Brief N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89712 ER -
Impact of Takeoff Trajectory Design on Performance and Noise for Advanced Air Mobility Aircraft

Gonzalez, Victoria

;

Yeung, Seraphin H.

2025-12-01 | PDF

A broad range of AAM aircraft are currently in development, each with varying community noise footprints and energy consumption depending on the specifics of their departure and arrival flight trajectories, which must be understood for effective airspace integration. This work presents a framework for analyzing AAM trajectory design, focusing on ke ...

03/30/2026

Title : Impact of Takeoff Trajectory Design on Performance and Noise for Advanced Air Mobility Aircraft Creator(s) : Gonzalez, Victoria;Yeung, Seraphin H.;Huynh, Jacqueline L.;Hansman, R. John; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment;Massachusetts Institute of Technology; Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-12-01 Report Number : eScholarship UC item 761269mb DOI : https://doi.org/10.2514/1.c038248 Gonzalez, Victoria et al. (2025). Impact of Takeoff Trajectory Design on Performance and Noise for Advanced Air Mobility Aircraft. https://doi.org/10.2514/1.c038248 Gonzalez, Victoria et al. "Impact of Takeoff Trajectory Design on Performance and Noise for Advanced Air Mobility Aircraft" (2025), https://doi.org/10.2514/1.c038248 Gonzalez, Victoria et al. "Impact of Takeoff Trajectory Design on Performance and Noise for Advanced Air Mobility Aircraft" , 2025, https://doi.org/10.2514/1.c038248 Export RIS Citation Information. TY - Journal Article AU - Gonzalez, Victoria AU - Yeung, Seraphin H. AU - Huynh, Jacqueline L. AU - Hansman, R. John A2 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment A2 - Massachusetts Institute of Technology A3 - United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy AB - A broad range of AAM aircraft are currently in development, each with varying community noise footprints and energy consumption depending on the specifics of their departure and arrival flight trajectories, which must be understood for effective airspace integration. This work presents a framework for analyzing AAM trajectory design, focusing on key performance characteristics including community noise impact, energy consumption, and flight duration. The framework can be applied to diverse AAM vehicle types, as demonstrated in this work on a Blown-Flap Short Takeoff and Landing vehicle, a Tilt-Rotor Vertical Takeoff and Landing vehicle, and a Lift plus Cruise Vertical Takeoff and Landing vehicle. Results of comparing various takeoff procedures for each vehicle show trade-offs between community noise, energy consumption, and flight duration, highlighting the importance of strategic trajectory design. AB - This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license https://creativecommons.org/licenses/by/4.0/. Please cite this article as: Impact of Takeoff Trajectory Design on Performance and Noise for Advanced Air Mobility Aircraft Victoria Gonzalez, Seraphin Yeung, Jacqueline Huynh, and R. John Hansman Journal of Aircraft 0 0:0, 1-16. https://doi.org/10.2514/1.c038248 AN - dot:89711 DO - https://doi.org/10.2514/1.c038248 KW - Flight paths KW - Aircraft KW - Mobility KW - Rotor blades KW - Flight control systems KW - VTOL aircraft KW - Energy consumption KW - STOL aircraft KW - Airspace KW - ASCENT LA - English PB - American Institute of Aeronautics and Astronautics PY - 2025-12-01 SN - eScholarship UC item 761269mb TI - Impact of Takeoff Trajectory Design on Performance and Noise for Advanced Air Mobility Aircraft M3 - Journal Article N1 - United States N1 - 13-C-AJFE-MIT-112, 131 N1 - Open Access; https://creativecommons.org/licenses/by/4.0/ UR - https://rosap.ntl.bts.gov/view/dot/89711 ER -
Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator: 1970

Villarreal, Carlos C.

1970-01-01 | PDF

Carlos C. (“C. C.”) Villarreal (1924-2010) served as the U.S. Department of Transportation’s Urban Mass Transportation Administrator (now the Federal Transit Administration) from 1969 to 1973. Before joining DOT, he worked as Vice-President for the Marquardt Corporation and served in the Navy from 1948 to 1957.

03/27/2026

Title : Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator: 1970 Creator(s) : Villarreal, Carlos C. Corporate Creator(s) : United States. Department of Transportation. Urban Mass Transportation Administration Published Date : 1970-01-01 DOI : https://doi.org/10.21949/dmxa-d939 Villarreal, Carlos C. (1970). Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator: 1970. https://doi.org/10.21949/dmxa-d939 Villarreal, Carlos C. "Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator: 1970" (1970), https://doi.org/10.21949/dmxa-d939 Villarreal, Carlos C. "Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator: 1970" , 1970, https://doi.org/10.21949/dmxa-d939 Export RIS Citation Information. TY - Speeches AU - Villarreal, Carlos C. A2 - United States. Department of Transportation. Urban Mass Transportation Administration AB - Carlos C. (“C. C.”) Villarreal (1924-2010) served as the U.S. Department of Transportation’s Urban Mass Transportation Administrator (now the Federal Transit Administration) from 1969 to 1973. Before joining DOT, he worked as Vice-President for the Marquardt Corporation and served in the Navy from 1948 to 1957. AN - dot:89710 DO - https://doi.org/10.21949/dmxa-d939 KW - Transportation policy KW - Public transit KW - Highway safety KW - Transportation safety KW - Traffic safety LA - English PB - United States. Department of Transportation PY - 1970-01-01 TI - Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator: 1970 M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89710 ER -
Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator:1969

Villarreal, Carlos C.

1969-01-01 | PDF

Carlos C. (“C. C.”) Villarreal (1924-2010) served as the U.S. Department of Transportation’s Urban Mass Transportation Administrator (now the Federal Transit Administration) from 1969 to 1973. Before joining DOT, he worked as Vice-President for the Marquardt Corporation and served in the Navy from 1948 to 1957.

03/27/2026

Title : Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator:1969 Creator(s) : Villarreal, Carlos C. Corporate Creator(s) : United States. Department of Transportation. Urban Mass Transportation Administration Published Date : 1969-01-01 DOI : https://doi.org/10.21949/tsk4-q205 Villarreal, Carlos C. (1969). Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator:1969. https://doi.org/10.21949/tsk4-q205 Villarreal, Carlos C. "Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator:1969" (1969), https://doi.org/10.21949/tsk4-q205 Villarreal, Carlos C. "Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator:1969" , 1969, https://doi.org/10.21949/tsk4-q205 Export RIS Citation Information. TY - Speeches AU - Villarreal, Carlos C. A2 - United States. Department of Transportation. Urban Mass Transportation Administration AB - Carlos C. (“C. C.”) Villarreal (1924-2010) served as the U.S. Department of Transportation’s Urban Mass Transportation Administrator (now the Federal Transit Administration) from 1969 to 1973. Before joining DOT, he worked as Vice-President for the Marquardt Corporation and served in the Navy from 1948 to 1957. AN - dot:89709 DO - https://doi.org/10.21949/tsk4-q205 KW - Transportation policy KW - Public transit KW - Highway safety KW - Transportation safety KW - Traffic safety LA - English PB - United States. Department of Transportation PY - 1969-01-01 TI - Speeches by Carlos C. Villarreal, Urban Mass Transportation Administrator:1969 M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89709 ER -
Statement of Diane K. Steed, Deputy Administrator, National Highway Traffic Safety Administration, before the Subcommittee on Courts, Senate Committee on the Judiciary

Steed, Diane K.

1981-11-06 | PDF

Statement of Diane K. Steed, Deputy Administrator, National Highway Traffic Safety Administration, Department of Transportation, before the Subcommittee on Courts, Senate Committee on the Judiciary, dealing with the problem of the drinking driver in the United States.

03/27/2026

Title : Statement of Diane K. Steed, Deputy Administrator, National Highway Traffic Safety Administration, before the Subcommittee on Courts, Senate Committee on the Judiciary Creator(s) : Steed, Diane K. Corporate Creator(s) : United States. Department of Transportation Published Date : 1981-11-06 DOI : https://doi.org/10.21949/n08x-ec10 Steed, Diane K. (1981). Statement of Diane K. Steed, Deputy Administrator, National Highway Traffic Safety Administration, before the Subcommittee on Courts, Senate Committee on the Judiciary. https://doi.org/10.21949/n08x-ec10 Steed, Diane K. "Statement of Diane K. Steed, Deputy Administrator, National Highway Traffic Safety Administration, before the Subcommittee on Courts, Senate Committee on the Judiciary" (1981), https://doi.org/10.21949/n08x-ec10 Steed, Diane K. "Statement of Diane K. Steed, Deputy Administrator, National Highway Traffic Safety Administration, before the Subcommittee on Courts, Senate Committee on the Judiciary" , 1981, https://doi.org/10.21949/n08x-ec10 Export RIS Citation Information. TY - Speeches AU - Steed, Diane K. A2 - United States. Department of Transportation AB - Statement of Diane K. Steed, Deputy Administrator, National Highway Traffic Safety Administration, Department of Transportation, before the Subcommittee on Courts, Senate Committee on the Judiciary, dealing with the problem of the drinking driver in the United States. AN - dot:89708 DO - https://doi.org/10.21949/n08x-ec10 KW - Drunk driving KW - Laws KW - Transportation policy KW - Traffic safety LA - English PB - United States. Department of Transportation PY - 1981-11-06 TI - Statement of Diane K. Steed, Deputy Administrator, National Highway Traffic Safety Administration, before the Subcommittee on Courts, Senate Committee on the Judiciary M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89708 ER -
Speeches by Quentin S. Taylor, Acting Assistant Administrator for Airports, Federal Aviation Administration: 1993

Quentin, Taylor S.

1993-01-01 | PDF

Tyler S. Quentins served as FAA's Deputy Administrator from 1977 to 1981, becoming the first African American to hold this role. A career civil servant, Taylor's FAA positions included Special Associate Administrator for Administration, FAA's first Director of Civil Rights, Deputy Director of the Alaskan Region; and Director of FAA's New England Re ...

03/27/2026

Title : Speeches by Quentin S. Taylor, Acting Assistant Administrator for Airports, Federal Aviation Administration: 1993 Creator(s) : Quentin, Taylor S. Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration Published Date : 1993-01-01 DOI : https://doi.org/10.21949/bh0h-s912 Quentin, Taylor S. (1993). Speeches by Quentin S. Taylor, Acting Assistant Administrator for Airports, Federal Aviation Administration: 1993. https://doi.org/10.21949/bh0h-s912 Quentin, Taylor S. "Speeches by Quentin S. Taylor, Acting Assistant Administrator for Airports, Federal Aviation Administration: 1993" (1993), https://doi.org/10.21949/bh0h-s912 Quentin, Taylor S. "Speeches by Quentin S. Taylor, Acting Assistant Administrator for Airports, Federal Aviation Administration: 1993" , 1993, https://doi.org/10.21949/bh0h-s912 Export RIS Citation Information. TY - Speeches AU - Quentin, Taylor S. A2 - United States. Department of Transportation. Federal Aviation Administration AB - Tyler S. Quentins served as FAA's Deputy Administrator from 1977 to 1981, becoming the first African American to hold this role. A career civil servant, Taylor's FAA positions included Special Associate Administrator for Administration, FAA's first Director of Civil Rights, Deputy Director of the Alaskan Region; and Director of FAA's New England Region. Following his term as deputy administrator, he continued his FAA career, serving in numerous positions, including Director of the Office of International Aviation, and Deputy Assistant Administrator for Airports. AN - dot:89707 DO - https://doi.org/10.21949/bh0h-s912 KW - Aviation KW - Air transportation policy KW - Airports KW - Budgeting KW - Economic factors LA - English PB - United States. Department of Transportation PY - 1993-01-01 TI - Speeches by Quentin S. Taylor, Acting Assistant Administrator for Airports, Federal Aviation Administration: 1993 M3 - Speeches N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89707 ER -
NHTSA News Releases: June 1995

United States. Department of Transportation. National Highway Traffic Safety Administration

1995-06-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: June 1995 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1995-06-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/wczn-qx04 United States. Department of Transportation. National Highway Traffic Safety Administration (1995). NHTSA News Releases: June 1995. https://doi.org/10.21949/wczn-qx04 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: June 1995" (1995), https://doi.org/10.21949/wczn-qx04 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: June 1995" , 1995, https://doi.org/10.21949/wczn-qx04 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89706 DO - https://doi.org/10.21949/wczn-qx04 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1995-06-01 T2 - NHTSA News Releases TI - NHTSA News Releases: June 1995 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89706 ER -
NHTSA News Releases: July-December 1995

United States. Department of Transportation. National Highway Traffic Safety Administration

1995-07-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: July-December 1995 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1995-07-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/z26f-g971 United States. Department of Transportation. National Highway Traffic Safety Administration (1995). NHTSA News Releases: July-December 1995. https://doi.org/10.21949/z26f-g971 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-December 1995" (1995), https://doi.org/10.21949/z26f-g971 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-December 1995" , 1995, https://doi.org/10.21949/z26f-g971 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89705 DO - https://doi.org/10.21949/z26f-g971 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1995-07-01 T2 - NHTSA News Releases TI - NHTSA News Releases: July-December 1995 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89705 ER -
NHTSA News Releases: January 1995

United States. Department of Transportation. National Highway Traffic Safety Administration

1995-01-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: January 1995 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1995-01-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/y23q-wf56 United States. Department of Transportation. National Highway Traffic Safety Administration (1995). NHTSA News Releases: January 1995. https://doi.org/10.21949/y23q-wf56 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January 1995" (1995), https://doi.org/10.21949/y23q-wf56 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January 1995" , 1995, https://doi.org/10.21949/y23q-wf56 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89704 DO - https://doi.org/10.21949/y23q-wf56 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1995-01-01 T2 - NHTSA News Releases TI - NHTSA News Releases: January 1995 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89704 ER -
NHTSA News Releases: February-March 1995

United States. Department of Transportation. National Highway Traffic Safety Administration

1995-02-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: February-March 1995 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1995-02-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/z7pc-fv15 United States. Department of Transportation. National Highway Traffic Safety Administration (1995). NHTSA News Releases: February-March 1995. https://doi.org/10.21949/z7pc-fv15 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: February-March 1995" (1995), https://doi.org/10.21949/z7pc-fv15 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: February-March 1995" , 1995, https://doi.org/10.21949/z7pc-fv15 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89703 DO - https://doi.org/10.21949/z7pc-fv15 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1995-02-01 T2 - NHTSA News Releases TI - NHTSA News Releases: February-March 1995 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89703 ER -
NHTSA News Releases: April-May 1995

United States. Department of Transportation. National Highway Traffic Safety Administration

1995-04-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: April-May 1995 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1995-04-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/h0j4-vg18 United States. Department of Transportation. National Highway Traffic Safety Administration (1995). NHTSA News Releases: April-May 1995. https://doi.org/10.21949/h0j4-vg18 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: April-May 1995" (1995), https://doi.org/10.21949/h0j4-vg18 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: April-May 1995" , 1995, https://doi.org/10.21949/h0j4-vg18 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89702 DO - https://doi.org/10.21949/h0j4-vg18 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1995-04-01 T2 - NHTSA News Releases TI - NHTSA News Releases: April-May 1995 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89702 ER -
NHTSA News Releases: July-December 1979

United States. Department of Transportation. National Highway Traffic Safety Administration

1979-07-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: July-December 1979 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1979-07-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/71f5-f234 United States. Department of Transportation. National Highway Traffic Safety Administration (1979). NHTSA News Releases: July-December 1979. https://doi.org/10.21949/71f5-f234 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-December 1979" (1979), https://doi.org/10.21949/71f5-f234 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-December 1979" , 1979, https://doi.org/10.21949/71f5-f234 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89701 DO - https://doi.org/10.21949/71f5-f234 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1979-07-01 T2 - NHTSA News Releases TI - NHTSA News Releases: July-December 1979 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89701 ER -
NHTSA News Releases: January-June 1979

United States. Department of Transportation. National Highway Traffic Safety Administration

1979-01-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: January-June 1979 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1979-01-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/214y-1590 United States. Department of Transportation. National Highway Traffic Safety Administration (1979). NHTSA News Releases: January-June 1979. https://doi.org/10.21949/214y-1590 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-June 1979" (1979), https://doi.org/10.21949/214y-1590 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-June 1979" , 1979, https://doi.org/10.21949/214y-1590 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89700 DO - https://doi.org/10.21949/214y-1590 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1979-01-01 T2 - NHTSA News Releases TI - NHTSA News Releases: January-June 1979 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89700 ER -
NHTSA News Releases: July-December 1978

United States. Department of Transportation. National Highway Traffic Safety Administration

1978-07-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: July-December 1978 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1978-07-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/gys3-pt74 United States. Department of Transportation. National Highway Traffic Safety Administration (1978). NHTSA News Releases: July-December 1978. https://doi.org/10.21949/gys3-pt74 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-December 1978" (1978), https://doi.org/10.21949/gys3-pt74 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-December 1978" , 1978, https://doi.org/10.21949/gys3-pt74 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89699 DO - https://doi.org/10.21949/gys3-pt74 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1978-07-01 T2 - NHTSA News Releases TI - NHTSA News Releases: July-December 1978 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89699 ER -
NHTSA News Releases: January-June 1978

United States. Department of Transportation. National Highway Traffic Safety Administration

1978-01-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: January-June 1978 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1978-01-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/q21w-s205 United States. Department of Transportation. National Highway Traffic Safety Administration (1978). NHTSA News Releases: January-June 1978. https://doi.org/10.21949/q21w-s205 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-June 1978" (1978), https://doi.org/10.21949/q21w-s205 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-June 1978" , 1978, https://doi.org/10.21949/q21w-s205 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89698 DO - https://doi.org/10.21949/q21w-s205 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1978-01-01 T2 - NHTSA News Releases TI - NHTSA News Releases: January-June 1978 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89698 ER -
NHTSA News Releases: January-July 1977

United States. Department of Transportation. National Highway Traffic Safety Administration

1977-01-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: January-July 1977 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1977-01-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/c3gn-x323 United States. Department of Transportation. National Highway Traffic Safety Administration (1977). NHTSA News Releases: January-July 1977. https://doi.org/10.21949/c3gn-x323 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-July 1977" (1977), https://doi.org/10.21949/c3gn-x323 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-July 1977" , 1977, https://doi.org/10.21949/c3gn-x323 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89697 DO - https://doi.org/10.21949/c3gn-x323 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1977-01-01 T2 - NHTSA News Releases TI - NHTSA News Releases: January-July 1977 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89697 ER -
NHTSA News Releases: August-December 1977

United States. Department of Transportation. National Highway Traffic Safety Administration

1977-08-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: August-December 1977 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1977-08-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/v2z2-kx51 United States. Department of Transportation. National Highway Traffic Safety Administration (1977). NHTSA News Releases: August-December 1977. https://doi.org/10.21949/v2z2-kx51 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: August-December 1977" (1977), https://doi.org/10.21949/v2z2-kx51 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: August-December 1977" , 1977, https://doi.org/10.21949/v2z2-kx51 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89696 DO - https://doi.org/10.21949/v2z2-kx51 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1977-08-01 T2 - NHTSA News Releases TI - NHTSA News Releases: August-December 1977 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89696 ER -
NHTSA News Releases: July-December 1976

United States. Department of Transportation. National Highway Traffic Safety Administration

1976-07-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: July-December 1976 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1976-07-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/n443-gh41 United States. Department of Transportation. National Highway Traffic Safety Administration (1976). NHTSA News Releases: July-December 1976. https://doi.org/10.21949/n443-gh41 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-December 1976" (1976), https://doi.org/10.21949/n443-gh41 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-December 1976" , 1976, https://doi.org/10.21949/n443-gh41 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89695 DO - https://doi.org/10.21949/n443-gh41 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1976-07-01 T2 - NHTSA News Releases TI - NHTSA News Releases: July-December 1976 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89695 ER -
NHTSA News Releases: January-March 1976

United States. Department of Transportation. National Highway Traffic Safety Administration

1976-01-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: January-March 1976 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1976-01-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/2np9-h740 United States. Department of Transportation. National Highway Traffic Safety Administration (1976). NHTSA News Releases: January-March 1976. https://doi.org/10.21949/2np9-h740 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-March 1976" (1976), https://doi.org/10.21949/2np9-h740 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-March 1976" , 1976, https://doi.org/10.21949/2np9-h740 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89694 DO - https://doi.org/10.21949/2np9-h740 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1976-01-01 T2 - NHTSA News Releases TI - NHTSA News Releases: January-March 1976 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89694 ER -
NHTSA News Releases: January-March 1975

United States. Department of Transportation. National Highway Traffic Safety Administration

1975-01-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: January-March 1975 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1975-01-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/3x7d-5r30 United States. Department of Transportation. National Highway Traffic Safety Administration (1975). NHTSA News Releases: January-March 1975. https://doi.org/10.21949/3x7d-5r30 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-March 1975" (1975), https://doi.org/10.21949/3x7d-5r30 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: January-March 1975" , 1975, https://doi.org/10.21949/3x7d-5r30 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89693 DO - https://doi.org/10.21949/3x7d-5r30 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1975-01-01 T2 - NHTSA News Releases TI - NHTSA News Releases: January-March 1975 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89693 ER -
NHTSA News Releases: August-December 1975

United States. Department of Transportation. National Highway Traffic Safety Administration

1975-08-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: August-December 1975 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1975-08-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/0ddh-1820 United States. Department of Transportation. National Highway Traffic Safety Administration (1975). NHTSA News Releases: August-December 1975. https://doi.org/10.21949/0ddh-1820 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: August-December 1975" (1975), https://doi.org/10.21949/0ddh-1820 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: August-December 1975" , 1975, https://doi.org/10.21949/0ddh-1820 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89692 DO - https://doi.org/10.21949/0ddh-1820 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1975-08-01 T2 - NHTSA News Releases TI - NHTSA News Releases: August-December 1975 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89692 ER -
NHTSA News Releases: April-July 1975

United States. Department of Transportation. National Highway Traffic Safety Administration

1975-04-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: April-July 1975 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1975-04-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/1sb1-4672 United States. Department of Transportation. National Highway Traffic Safety Administration (1975). NHTSA News Releases: April-July 1975. https://doi.org/10.21949/1sb1-4672 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: April-July 1975" (1975), https://doi.org/10.21949/1sb1-4672 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: April-July 1975" , 1975, https://doi.org/10.21949/1sb1-4672 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89691 DO - https://doi.org/10.21949/1sb1-4672 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1975-04-01 T2 - NHTSA News Releases TI - NHTSA News Releases: April-July 1975 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89691 ER -
NHTSA News Releases: October-December 1974

United States. Department of Transportation. National Highway Traffic Safety Administration

1974-10-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: October-December 1974 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1974-10-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/8grn-f968 United States. Department of Transportation. National Highway Traffic Safety Administration (1974). NHTSA News Releases: October-December 1974. https://doi.org/10.21949/8grn-f968 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: October-December 1974" (1974), https://doi.org/10.21949/8grn-f968 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: October-December 1974" , 1974, https://doi.org/10.21949/8grn-f968 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89690 DO - https://doi.org/10.21949/8grn-f968 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1974-10-01 T2 - NHTSA News Releases TI - NHTSA News Releases: October-December 1974 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89690 ER -
NHTSA News Releases: July-September 1974

United States. Department of Transportation. National Highway Traffic Safety Administration

1974-07-01 | NHTSA News Releases | PDF

Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives.

03/27/2026

Title : NHTSA News Releases: July-September 1974 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration Published Date : 1974-07-01 Series : NHTSA News Releases DOI : https://doi.org/10.21949/xa7j-0561 United States. Department of Transportation. National Highway Traffic Safety Administration (1974). NHTSA News Releases: July-September 1974. https://doi.org/10.21949/xa7j-0561 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-September 1974" (1974), https://doi.org/10.21949/xa7j-0561 United States. Department of Transportation. National Highway Traffic Safety Administration "NHTSA News Releases: July-September 1974" , 1974, https://doi.org/10.21949/xa7j-0561 Export RIS Citation Information. TY - Press Release A2 - United States. Department of Transportation. National Highway Traffic Safety Administration AB - Press releases from the National Highway Traffic Safety Administration (NHTSA) provided news about vehicle recall campaigns, motor vehicle safety regulations, manufacturer inspection and investigation results, and highway and traffic safety initiatives. AN - dot:89689 DO - https://doi.org/10.21949/xa7j-0561 KW - Highway safety KW - Traffic safety KW - Standards KW - Equipment tests KW - Vehicle tests KW - Speed limits KW - Compliance KW - Recall campaigns KW - Policy, legislation and regulation LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 1974-07-01 T2 - NHTSA News Releases TI - NHTSA News Releases: July-September 1974 M3 - Press Release N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/89689 ER -

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