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Showing 101 - 120 of 427 results

Boeing 727-100 Test Project (High Energy Radiated Field Tests)

Crowther, T. ;

Ybarrondo, L. J.

1989-07-01 | PDF

This document is the final report of a radio frequency (RF) coupling test on a BOEING 727-100 commercial aircraft. The objective of the test was to measure the coupling, or penetration, of radio frequency signals in a BOEING 727-100 in the frequency range of 1.0 megahertz to 6.0 gigahertz. The RF field levels generated inside the airplane during fl ...

08/24/2026

Title : Boeing 727-100 Test Project (High Energy Radiated Field Tests) Creator(s) : Crowther, T.;Ybarrondo, L. J.;Skousen, N.;Hintze, Michael; Corporate Creator(s) : Scientech, Incorporated Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1989-07-01 Report Number : DOT/FAA/CT-88/33 URL : https://rosap.ntl.bts.gov/view/dot/93047
Crowther, T. et al. (1989). Boeing 727-100 Test Project (High Energy Radiated Field Tests).

Crowther, T. et al. "Boeing 727-100 Test Project (High Energy Radiated Field Tests)" (1989)

Crowther, T. et al. "Boeing 727-100 Test Project (High Energy Radiated Field Tests)" , 1989
Export RIS Citation Information. TY - Tech Report AU - Crowther, T. AU - Ybarrondo, L. J. AU - Skousen, N. AU - Hintze, Michael A2 - Scientech, Incorporated A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This document is the final report of a radio frequency (RF) coupling test on a BOEING 727-100 commercial aircraft. The objective of the test was to measure the coupling, or penetration, of radio frequency signals in a BOEING 727-100 in the frequency range of 1.0 megahertz to 6.0 gigahertz. The RF field levels generated inside the airplane during flight are probably not a health hazard with respect to passengers and crew because exposure time to high intensity RF fields is of short duration. However, this project has demonstrated that RF energy can couple into aircraft compartments and onto electrical wiring. The extent to which existing radio frequency sources can impose unwanted electrical signals or voltages on critical aircraft components during a flyby are shown in the report. AN - dot:93047 ET - Final Report KW - Air pilots KW - Aircraft KW - Airline pilots KW - Chemical substances KW - Civil aircraft KW - Couplers KW - Electromagnetic radiation KW - Passenger comfort KW - Passengers KW - Radio frequency interference LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-07-01 SN - DOT/FAA/CT-88/33 TI - Boeing 727-100 Test Project (High Energy Radiated Field Tests) M3 - Tech Report N1 - United States N1 - DTFA03-88-A-00027 UR - https://rosap.ntl.bts.gov/view/dot/93047 ER - DB - ROSA P
Aircraft Jet Engine Exhaust Blast Effects on Par-56 Runway Threshold Lamp Fixtures

Struck, J. K. ;

Barile, Anthony J.

1989-06-01 | PDF

The effects of jet engine exhaust blast on PAR-56 lamps located at the runway threshold were measured in this project. Sensors were placed on and near the lamp assemblies which measured blast velocity and temperature, bulb face temperature, lamp fixture acceleration and sound pressure level. These sensors located near the threshold of runway 13 at ...

08/24/2026

Title : Aircraft Jet Engine Exhaust Blast Effects on Par-56 Runway Threshold Lamp Fixtures Creator(s) : Struck, J. K.;Barile, Anthony J.; Corporate Creator(s) : U.S. Army Engineering Research and Development Center Corporate Contributor(s) : United States. Federal Aviation Administration. Program Engineering & Maintenance Service Published Date : 1989-06-01 Report Number : DOT/FAA/CT-89/4 URL : https://rosap.ntl.bts.gov/view/dot/93046
Struck, J. K. and Barile, Anthony J. (1989). Aircraft Jet Engine Exhaust Blast Effects on Par-56 Runway Threshold Lamp Fixtures.

Struck, J. K. and Barile, Anthony J. "Aircraft Jet Engine Exhaust Blast Effects on Par-56 Runway Threshold Lamp Fixtures" (1989)

Struck, J. K. and Barile, Anthony J. "Aircraft Jet Engine Exhaust Blast Effects on Par-56 Runway Threshold Lamp Fixtures" , 1989
Export RIS Citation Information. TY - Tech Report AU - Struck, J. K. AU - Barile, Anthony J. A2 - U.S. Army Engineering Research and Development Center A3 - United States. Federal Aviation Administration. Program Engineering & Maintenance Service AB - The effects of jet engine exhaust blast on PAR-56 lamps located at the runway threshold were measured in this project. Sensors were placed on and near the lamp assemblies which measured blast velocity and temperature, bulb face temperature, lamp fixture acceleration and sound pressure level. These sensors located near the threshold of runway 13 at La Guardia Airport. Data were acquired during the engine runup and takeoff roll of some 162 aircraft during the measurement phase. The data were recorded on digital magnetic tape and video tape to form a permanent record of the raw data. The data were later plotted and analyzed, both manually and using a computer in order to extract the worst case environmental parameters encountered during the measurement phase. A prediction algorithm was developed by correlating the acquired data against the manufacturers' published jet exhaust blast velocity and temperature contours. AN - dot:93046 ET - Final Report KW - Airplanes KW - Airports KW - Blast loads KW - Lighting KW - Motors KW - Aircraft exhaust gases LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-06-01 SN - DOT/FAA/CT-89/4 TI - Aircraft Jet Engine Exhaust Blast Effects on Par-56 Runway Threshold Lamp Fixtures M3 - Tech Report N1 - United States N1 - DTFA03-84-A-40020 UR - https://rosap.ntl.bts.gov/view/dot/93046 ER - DB - ROSA P
Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U.S. Commercial Aviation During 1983

DeLucia, R. A. ;

Salvino, J. T.

1989-03-01 | PDF

This report presents statistics relating to gas turbine engine rotor failures which occurred during 1983 in commercial aviation service use. One-hundred and seventy-two failures occurred in 1983. Rotor fragments were generated in 96 of the failures and, of these, 9 were uncontained. The predominant failures involved blade fragments, 95.4 percent of ...

08/24/2026

Title : Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U.S. Commercial Aviation During 1983 Creator(s) : DeLucia, R. A.;Salvino, J. T.; Corporate Creator(s) : Naval Air Propulsion Center Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1989-03-01 Report Number : DOT/FAA/CT-89/5 URL : https://rosap.ntl.bts.gov/view/dot/93045
DeLucia, R. A. and Salvino, J. T. (1989). Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U.S. Commercial Aviation During 1983.

DeLucia, R. A. and Salvino, J. T. "Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U.S. Commercial Aviation During 1983" (1989)

DeLucia, R. A. and Salvino, J. T. "Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U.S. Commercial Aviation During 1983" , 1989
Export RIS Citation Information. TY - Tech Report AU - DeLucia, R. A. AU - Salvino, J. T. A2 - Naval Air Propulsion Center A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report presents statistics relating to gas turbine engine rotor failures which occurred during 1983 in commercial aviation service use. One-hundred and seventy-two failures occurred in 1983. Rotor fragments were generated in 96 of the failures and, of these, 9 were uncontained. The predominant failures involved blade fragments, 95.4 percent of which were contained. Five disk failures occurred and four were uncontained. Fifty-nine percent of the 172 failures occurred during the takeoff and climb stages of flight. AN - dot:93045 ET - Final Report KW - 20th century KW - Aeronautics KW - Aircraft KW - Airplanes KW - Crashes KW - Gas turbines KW - Statistics KW - Turbine engines KW - Turboprop engines LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-03-01 SN - DOT/FAA/CT-89/5 TI - Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U.S. Commercial Aviation During 1983 M3 - Tech Report N1 - United States N1 - DOT/FA71NAAP98 UR - https://rosap.ntl.bts.gov/view/dot/93045 ER - DB - ROSA P
Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U. S. Commercial Aviation During 1984

DeLucia, R. A. ;

Salvino, J. T.

1989-06-01 | PDF

This report presents statistical information relating to gas turbine engine rotor failures which occurred during 1984 in commercial aviation service use. Two hundred and six failures occurred in 1984. Rotor fragments were generated in 114 of the failures and, of these, 18 were uncontained. The predominant failure involved blade fragments, 90.3 perc ...

08/24/2026

Title : Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U. S. Commercial Aviation During 1984 Creator(s) : DeLucia, R. A.;Salvino, J. T.;Fenton, B. C.; Corporate Creator(s) : Naval Air Propulsion Center Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1989-06-01 Report Number : DOT/FAA/CT-89/6 URL : https://rosap.ntl.bts.gov/view/dot/93044
DeLucia, R. A. et al. (1989). Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U. S. Commercial Aviation During 1984.

DeLucia, R. A. and Salvino, J. T. and Fenton, B. C. "Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U. S. Commercial Aviation During 1984" (1989)

DeLucia, R. A. et al. "Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U. S. Commercial Aviation During 1984" , 1989
Export RIS Citation Information. TY - Tech Report AU - DeLucia, R. A. AU - Salvino, J. T. AU - Fenton, B. C. A2 - Naval Air Propulsion Center A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center AB - This report presents statistical information relating to gas turbine engine rotor failures which occurred during 1984 in commercial aviation service use. Two hundred and six failures occurred in 1984. Rotor fragments were generated in 114 of the failures and, of these, 18 were uncontained. The predominant failure involved blade fragments, 90.3 percent of which were contained. Seven disk failures occurred and all were uncontained. Seventy percent of the 206 failures occurred during the takeoff and climb stages of flight. AN - dot:93044 ET - Final Report KW - 20th century KW - Aeronautics KW - Aircraft KW - Airplanes KW - Crashes KW - Gas turbines KW - Statistics KW - Turbine engines KW - Turboprop engines LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-06-01 SN - DOT/FAA/CT-89/6 TI - Statistics on Aircraft Gas Turbine Engine Rotor Failures that Occurred in U. S. Commercial Aviation During 1984 M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93044 ER - DB - ROSA P
Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana

Salari, Saman ;

Akentuna, Moses

2026-08-01 | PDF

State and federal agencies face ongoing challenges in the characterization and qualification of diverse paving materials. Although conventional asphalt binder characterization relies on extensive rheological and mixture testing, these methods often leave long-term performance characterization uncertain. Consequently, agencies are exploring faster, ...

08/24/2026

Title : Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana Creator(s) : Salari, Saman;Akentuna, Moses; Corporate Creator(s) : Louisiana Transportation Research Center Corporate Contributor(s) : Louisiana. Department of Transportation and Development;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-08-01 Report Number : FHWA/LA.26/729 URL : https://rosap.ntl.bts.gov/view/dot/93043
Salari, Saman and Akentuna, Moses (2026). Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana.

Salari, Saman and Akentuna, Moses "Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana" (2026)

Salari, Saman and Akentuna, Moses "Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana" , 2026
Export RIS Citation Information. TY - Tech Report AU - Salari, Saman AU - Akentuna, Moses A2 - Louisiana Transportation Research Center A3 - Louisiana. Department of Transportation and Development A3 - United States. Department of Transportation. Federal Highway Administration AB - State and federal agencies face ongoing challenges in the characterization and qualification of diverse paving materials. Although conventional asphalt binder characterization relies on extensive rheological and mixture testing, these methods often leave long-term performance characterization uncertain. Consequently, agencies are exploring faster, more precise chemical testing at the molecular level. Gel Permeation Chromatography (GPC) is a standard tool for binder characterization. However, its high operational and maintenance costs, combined with its limited ability to provide detailed chemical insights, have prompted interest in alternative methods. SARA (saturates, aromatics, resins, and asphaltenes) fractionation using Thin-Layer Chromatography/Flame Ionization Detection (TLC/FID) equipment offers a more efficient alternative. This study evaluated the GPC method alongside two SARA approaches: the 4-peak method, which analyzes the whole sample directly, and the 3-peak method, which precipitates and separates asphaltenes first before grouping the remaining fractions. An analysis of 46 asphalt binder samples revealed significant differences between GPC and SARA results, with limited correlation between the methods. Additionally, an ANOVA comparison of the 3-peak and 4-peak methods showed significant differences in 55% of the samples. Based on these findings, GPC remains the superior tool for analyzing larger molecular weight distributions and polymer content detection, while SARA grouping is recommended for evaluating smaller molecular components and chemical fractions. Although both SARA methods showed similar performance, the 3-peak method showed better correlation to GPC data, while the 4-peak method was more practical. AN - dot:93043 ET - Final Report: 06/2022-03/2025 KW - Aromatic hydrocarbons KW - Asphaltene KW - Bituminous binders KW - Resins KW - Saturated soils KW - maltene KW - GPC KW - SARA fractionation KW - Iatroscan LA - English PB - Louisiana Transportation Research Center PY - 2026-08-01 SN - FHWA/LA.26/729 TI - Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana M3 - Tech Report N1 - United States N1 - 22-1B UR - https://rosap.ntl.bts.gov/view/dot/93043 ER - DB - ROSA P
Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana [Technical Summary]

Salari, Saman ;

Akentuna, Moses

2026-01-01 | PDF

The objective of this project was to evaluate asphalt binder characterization using SARA fractionation via Thin-Layer Chromatography with Flame Ionization Detection(TLC/FID), and to analyze these results alongside available Gel Permeation Chromatography (GPC) data. The primary focus of this study was to investigate the sensitivity and capability of ...

08/24/2026

Title : Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana [Technical Summary] Creator(s) : Salari, Saman;Akentuna, Moses; Corporate Creator(s) : Louisiana Transportation Research Center Corporate Contributor(s) : Louisiana State University (Baton Rouge, La.) Published Date : 2026-01-01 Report Number : SPR: TT-Fed/TT-Reg - 5;22-1B; URL : https://rosap.ntl.bts.gov/view/dot/93042
Salari, Saman and Akentuna, Moses (2026). Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana [Technical Summary].

Salari, Saman and Akentuna, Moses "Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana [Technical Summary]" (2026)

Salari, Saman and Akentuna, Moses "Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana [Technical Summary]" , 2026
Export RIS Citation Information. TY - Brief AU - Salari, Saman AU - Akentuna, Moses A2 - Louisiana Transportation Research Center A3 - Louisiana State University (Baton Rouge, La.) AB - The objective of this project was to evaluate asphalt binder characterization using SARA fractionation via Thin-Layer Chromatography with Flame Ionization Detection(TLC/FID), and to analyze these results alongside available Gel Permeation Chromatography (GPC) data. The primary focus of this study was to investigate the sensitivity and capability of the TLC/FID-based SARA method in detecting variations in the chemical composition of asphalt binders. AN - dot:93042 ET - Technical Summary KW - Aromatic hydrocarbons KW - Asphaltene KW - Bituminous binders KW - Resins KW - Saturated soils LA - English PB - Louisiana Transportation Research Center PY - 2026-01-01 SN - SPR: TT-Fed/TT-Reg - 5 TI - Evaluation of Saturates/Aromatics/Resins/Asphaltenes (SARA) Fractionation of Asphalt Binders in Louisiana [Technical Summary] M3 - Brief N1 - United States N1 - DOTLT1000423 UR - https://rosap.ntl.bts.gov/view/dot/93042 ER - DB - ROSA P
Truck Parking Shortage: Improving Efficiency and Identifying Opportunities [Technical Summary]

Stich, Bethany

;

Mallum, Faisal

2025-01-01 | PDF

This study addressed truck parking issues and provides both short- and long-term solutions. The long-term solution is to develop guidance for truck parking ordinances that local jurisdictions are willing to adopt and to help build more truck parking spaces. The short-term solution is to identify what truck parking exists, how it is managed, and whe ...

08/24/2026

Title : Truck Parking Shortage: Improving Efficiency and Identifying Opportunities [Technical Summary] Creator(s) : Stich, Bethany;Mallum, Faisal;Mitran, Elisabeta; Corporate Creator(s) : Louisiana Transportation Research Center Published Date : 2025-01-01 Report Number : 25-2SS URL : https://rosap.ntl.bts.gov/view/dot/93041
Stich, Bethany et al. (2025). Truck Parking Shortage: Improving Efficiency and Identifying Opportunities [Technical Summary].

Stich, Bethany and Mallum, Faisal and Mitran, Elisabeta "Truck Parking Shortage: Improving Efficiency and Identifying Opportunities [Technical Summary]" (2025)

Stich, Bethany et al. "Truck Parking Shortage: Improving Efficiency and Identifying Opportunities [Technical Summary]" , 2025
Export RIS Citation Information. TY - Brief AU - Stich, Bethany AU - Mallum, Faisal AU - Mitran, Elisabeta A2 - Louisiana Transportation Research Center AB - This study addressed truck parking issues and provides both short- and long-term solutions. The long-term solution is to develop guidance for truck parking ordinances that local jurisdictions are willing to adopt and to help build more truck parking spaces. The short-term solution is to identify what truck parking exists, how it is managed, and where and what Variable Message Signage (VMS)is available to truck drivers in Louisiana. AN - dot:93041 ET - Technical Summary KW - Parking KW - Parking facilities KW - Commercial vehicles KW - Trucking KW - Shortages KW - Trucks KW - Truck stops KW - Financing KW - Truck drivers LA - English PB - Louisiana Transportation Research Center PY - 2025-01-01 SN - 25-2SS TI - Truck Parking Shortage: Improving Efficiency and Identifying Opportunities [Technical Summary] M3 - Brief N1 - United States N1 - DOTLT1000559 UR - https://rosap.ntl.bts.gov/view/dot/93041 ER - DB - ROSA P
North Dakota Statewide Traffic Safety Survey, 2019: Traffic Safety Performance Measures for State and Federal Agencies

Vachal, Kimberly ;

Benson, Laurel

2019-08-01 | PDF

The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, qu ...

08/24/2026

Title : North Dakota Statewide Traffic Safety Survey, 2019: Traffic Safety Performance Measures for State and Federal Agencies Creator(s) : Vachal, Kimberly;Benson, Laurel;Kubas, Andrew; Corporate Creator(s) : Upper Great Plains Transportation Institute;North Dakota State University; Corporate Contributor(s) : North Dakota. Department of Transportation Published Date : 2019-08-01 Report Number : 309 URL : https://rosap.ntl.bts.gov/view/dot/93040
Vachal, Kimberly et al. (2019). North Dakota Statewide Traffic Safety Survey, 2019: Traffic Safety Performance Measures for State and Federal Agencies.

Vachal, Kimberly and Benson, Laurel and Kubas, Andrew "North Dakota Statewide Traffic Safety Survey, 2019: Traffic Safety Performance Measures for State and Federal Agencies" (2019)

Vachal, Kimberly et al. "North Dakota Statewide Traffic Safety Survey, 2019: Traffic Safety Performance Measures for State and Federal Agencies" , 2019
Export RIS Citation Information. TY - Tech Report AU - Vachal, Kimberly AU - Benson, Laurel AU - Kubas, Andrew A2 - Upper Great Plains Transportation Institute A2 - North Dakota State University A3 - North Dakota. Department of Transportation AB - The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, questions were included to better understand views on specific programs and attitudes pertinent to North Dakota drivers. Results show that more North Dakota drivers have adopted safe driving practices, but additional efforts are needed to improve safety on the state's roads. AN - dot:93040 KW - Traffic safety KW - Surveys KW - Drunk driving KW - Seat belt use KW - Speeding KW - Performance measurement KW - State government agencies KW - Fatalities KW - Driving behavior KW - Crashes KW - Data collection LA - English PB - Upper Great Plains Transportation Institute PY - 2019-08-01 SN - 309 TI - North Dakota Statewide Traffic Safety Survey, 2019: Traffic Safety Performance Measures for State and Federal Agencies M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93040 ER - DB - ROSA P
Motor Vehicle Crash Patients Meeting Criteria for Prehospital Blood Transfusion in 2025

United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Behavioral Safety Research

2026-08-01 | PDF

This figure, developed by NHTSA's Office of Emergency Medical Services, the NEMSIS Technical Assistance Center, and the Office of Behavioral Safety Research, uses 2025 NEMSIS data to quantify and map 32,992 ground EMS responses to motor vehicle crash patients meeting the clinical criteria (Levy et al., 2025) for prehospital blood transfusion.

08/18/2026

Title : Motor Vehicle Crash Patients Meeting Criteria for Prehospital Blood Transfusion in 2025 Corporate Creator(s) : United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Behavioral Safety Research Published Date : 2026-08-01 Report Number : Figure No. DOT HS 813 843 DOI : https://doi.org/10.21949/5g6d-ah54
United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Behavioral Safety Research (2026). Motor Vehicle Crash Patients Meeting Criteria for Prehospital Blood Transfusion in 2025. https://doi.org/10.21949/5g6d-ah54

United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Behavioral Safety Research "Motor Vehicle Crash Patients Meeting Criteria for Prehospital Blood Transfusion in 2025" (2026), https://doi.org/10.21949/5g6d-ah54

United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Behavioral Safety Research "Motor Vehicle Crash Patients Meeting Criteria for Prehospital Blood Transfusion in 2025" , 2026, https://doi.org/10.21949/5g6d-ah54
Export RIS Citation Information. TY - Tech Report A2 - United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Behavioral Safety Research AB - This figure, developed by NHTSA's Office of Emergency Medical Services, the NEMSIS Technical Assistance Center, and the Office of Behavioral Safety Research, uses 2025 NEMSIS data to quantify and map 32,992 ground EMS responses to motor vehicle crash patients meeting the clinical criteria (Levy et al., 2025) for prehospital blood transfusion. AN - dot:93039 DO - https://doi.org/10.21949/5g6d-ah54 KW - Emergency medical services KW - Injury severity KW - Traffic crash victims KW - Blood LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration PY - 2026-08-01 SN - Figure No. DOT HS 813 843 TI - Motor Vehicle Crash Patients Meeting Criteria for Prehospital Blood Transfusion in 2025 M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93039 ER - DB - ROSA P
Tabletop Exercise Guidelines for Planned Events and Unplanned Incidents/Emergencies

Radow, Laurel J.

2007-11-01 | PDF

When special events are held, they generally increase traffic demands in or near the location of the event. In order to address this influx of traffic, transportation management plans are developed with the intent of minimizing the effect the event has on the transportation system. For a transportation management plan to be successful, however, it ...

08/18/2026

Title : Tabletop Exercise Guidelines for Planned Events and Unplanned Incidents/Emergencies Creator(s) : Radow, Laurel J. Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 2007-11-01 Report Number : FHWA-HOP-08-005 URL : https://rosap.ntl.bts.gov/view/dot/93038
Radow, Laurel J. (2007). Tabletop Exercise Guidelines for Planned Events and Unplanned Incidents/Emergencies.

Radow, Laurel J. "Tabletop Exercise Guidelines for Planned Events and Unplanned Incidents/Emergencies" (2007)

Radow, Laurel J. "Tabletop Exercise Guidelines for Planned Events and Unplanned Incidents/Emergencies" , 2007
Export RIS Citation Information. TY - Tech Report AU - Radow, Laurel J. A2 - United States. Department of Transportation. Federal Highway Administration A4 - Radow, Laurel AB - When special events are held, they generally increase traffic demands in or near the location of the event. In order to address this influx of traffic, transportation management plans are developed with the intent of minimizing the effect the event has on the transportation system. For a transportation management plan to be successful, however, it is strongly recommended that the plan be tested and reviewed prior to the event. One of the most effective ways to test a transportation management plan is through a tabletop exercise. A tabletop exercise uses the transportation management plan as the basis for action. It enables participants to role play in a scenario-based exercise conducted in an informal stress-free environment. During this low cost/low stress activity, key stakeholders involved in the planning and implementation of transportation management plans test the plan through a facilitated scenario based discussion. Tabletop exercises allow traffic management team officials to review the effect of certain event-specific action plans on other concurrent events. Through this interaction, contingencies are vetted and resolved. In addition, a tabletop exercise can be used to train and familiarize personnel with their roles and responsibilities within the planned special event's transportation management plan. No matter how thorough a transportation management plan may be, it cannot account for all contingencies. The purposes of a tabletop exercise are to (1) test the written assumptions in the transportation management plan and (2) see what must be changed and how the plan can be improved. The tabletop exercise allows the participants to see how they react to unexpected events such as equipment failure or personnel shortages. Though originally designed for planned special events, the information in the guide can be used for the management of unplanned incidents including traffic incidents and responses to emergencies. AN - dot:93038 ET - Final Report KW - Special events KW - Incident management KW - Transportation system management KW - Emergency transportation KW - Transportation operations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2007-11-01 SN - FHWA-HOP-08-005 TI - Tabletop Exercise Guidelines for Planned Events and Unplanned Incidents/Emergencies M3 - Tech Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93038 ER - DB - ROSA P
Drilled Shaft Imaging With 2D Ultrasonic Waveform Tomography

Tran, Khiem ;

Yang, Bingkun

2026-08-01 | PDF

Drilled shafts are widely used as deep foundations for transportation infrastructure; however, construction defects such as soil intrusion, concrete segregation, slurry inclusions, necking, and soft-bottom conditions can compromise structural integrity and long-term performance. Conventional crosshole sonic logging (CSL) provides valuable quality-c ...

08/17/2026

Title : Drilled Shaft Imaging With 2D Ultrasonic Waveform Tomography Creator(s) : Tran, Khiem;Yang, Bingkun; Corporate Creator(s) : University of Florida. Dept. of Civil and Coastal Engineering Corporate Contributor(s) : Florida. Department of Transportation Contributor(s) : Shishlova, Kelly Published Date : 2026-08-01 Report Number : BED31- 977-27 URL : https://rosap.ntl.bts.gov/view/dot/93037
Tran, Khiem and Yang, Bingkun (2026). Drilled Shaft Imaging With 2D Ultrasonic Waveform Tomography.

Tran, Khiem and Yang, Bingkun "Drilled Shaft Imaging With 2D Ultrasonic Waveform Tomography" (2026)

Tran, Khiem and Yang, Bingkun "Drilled Shaft Imaging With 2D Ultrasonic Waveform Tomography" , 2026
Export RIS Citation Information. TY - Tech Report AU - Tran, Khiem AU - Yang, Bingkun A2 - University of Florida. Dept. of Civil and Coastal Engineering A3 - Florida. Department of Transportation A4 - Shishlova, Kelly AB - Drilled shafts are widely used as deep foundations for transportation infrastructure; however, construction defects such as soil intrusion, concrete segregation, slurry inclusions, necking, and soft-bottom conditions can compromise structural integrity and long-term performance. Conventional crosshole sonic logging (CSL) provides valuable quality-control information but offers limited capability for imaging shaft geometry and defect extent. This study developed, optimized, and field-validated a two-dimensional ultrasonic full waveform Inversion (UFWI) framework for high-resolution drilled shaft imaging using CSL waveform data. The method combines acoustic wavefield modeling, adjoint-state inversion, and regularized model updating to reconstruct cross-sectional P-wave velocity distributions without prior knowledge of shaft boundaries or defect locations. Synthetic studies demonstrated that UFWI can accurately image shaft geometry and detect internal and boundary defects. Parametric analyses further showed that at least five CSL access tubes are required for reliable imaging, while approximately one tube per foot of shaft diameter is recommended for shafts 6 ft in diameter or larger. Field validation was conducted on a full-scale 6-ft-diameter, 40-ft-long drilled shaft constructed at the Florida Department of Transportation (FDOT) Hawthorne test facility with intentionally embedded defects, including concrete segregation, necking with soil intrusion, slurry inclusions, and a soft-bottom condition. UFWI successfully reconstructed shaft boundaries; identified major defect horizons; and localized anomalies consistent with documented as-built conditions. Compared with conventional CSL, UFWI provided higher spatial resolution and more detailed characterization of defect geometry, demonstrating its potential as a quantitative nondestructive evaluation tool for drilled shaft quality assurance and integrity assessment. AN - dot:93037 ET - Final Report: 03/01/2024 - 08/31/2026 KW - Acoustic waves KW - Pile foundations KW - Infrastructure KW - Quality assurance KW - Bridges KW - Structural design KW - Shaft bearings KW - Drilled shaft imaging KW - crosshole sonic logging KW - P wave velocity KW - full-waveform inversion LA - English PB - Florida. Department of Transportation PY - 2026-08-01 SN - BED31- 977-27 TI - Drilled Shaft Imaging With 2D Ultrasonic Waveform Tomography M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93037 ER - DB - ROSA P
Buy America Materials Certifications [Memorandum]

United States. Federal Highway Administration. Construction and Maintenance Division ...

1992-11-19 | Memoranda & Guidance: Guidance | PDF

The Office of Engineering received an inquiry regarding the procedures being used by state Departments of Transportation to verify certifications they receive on Federal-aid projects attesting that steel materials used meet Buy America requirements. In an effort to obtain current information, they conducted a telephonic survey with division offices ...

08/17/2026

Title : Buy America Materials Certifications [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Construction and Maintenance Division;United States. Federal Highway Administration. Office of Engineering; Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1992-11-19 Series : Memoranda & Guidance: Guidance URL : https://rosap.ntl.bts.gov/view/dot/93036
United States. Federal Highway Administration. Construction and Maintenance Division (1992). Buy America Materials Certifications [Memorandum].

United States. Federal Highway Administration. Construction and Maintenance Division "Buy America Materials Certifications [Memorandum]" (1992)

United States. Federal Highway Administration. Construction and Maintenance Division "Buy America Materials Certifications [Memorandum]" , 1992
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Construction and Maintenance Division A2 - United States. Federal Highway Administration. Office of Engineering A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The Office of Engineering received an inquiry regarding the procedures being used by state Departments of Transportation to verify certifications they receive on Federal-aid projects attesting that steel materials used meet Buy America requirements. In an effort to obtain current information, they conducted a telephonic survey with division offices in six different regions. From the results of this limited survey, they believed additional guidance to the field offices and the States on this subject was needed. AN - dot:93036 KW - Government funding KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Federal Highway Administration. Office of Engineering PY - 1992-11-19 T2 - Memoranda & Guidance: Guidance TI - Buy America Materials Certifications [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93036 ER - DB - ROSA P
3/17/94 Letter to T. Peter Ruane

Slater, Rodney E.

1994-03-17 | Memoranda & Guidance: Information | PDF

This letter answers an inquiry regarding the position of the Federal Highway Administration (FHWA) on the question of the impact of the North American Free Trade Agreement (NAFTA) on the Buy America provisions of the Federal-aid highway program.

08/17/2026

Title : 3/17/94 Letter to T. Peter Ruane Creator(s) : Slater, Rodney E. Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1994-03-17 Series : Memoranda & Guidance: Information URL : https://rosap.ntl.bts.gov/view/dot/93035
Slater, Rodney E. (1994). 3/17/94 Letter to T. Peter Ruane.

Slater, Rodney E. "3/17/94 Letter to T. Peter Ruane" (1994)

Slater, Rodney E. "3/17/94 Letter to T. Peter Ruane" , 1994
Export RIS Citation Information. TY - Letter AU - Slater, Rodney E. A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - This letter answers an inquiry regarding the position of the Federal Highway Administration (FHWA) on the question of the impact of the North American Free Trade Agreement (NAFTA) on the Buy America provisions of the Federal-aid highway program. AN - dot:93035 KW - Government funding KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1994-03-17 T2 - Memoranda & Guidance: Information TI - 3/17/94 Letter to T. Peter Ruane M3 - Letter N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93035 ER - DB - ROSA P
Buy America Guidance [Memorandum]

United States. Federal Highway Administration. Office of Engineering

1994-07-11 | Memoranda & Guidance: Information | PDF

The purpose of this memorandum is to disseminate the findings of the recent nationwide Buy America materials certification review and to discuss actions which we are taking as a result of that review.

08/17/2026

Title : Buy America Guidance [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Office of Engineering Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1994-07-11 Series : Memoranda & Guidance: Information URL : https://rosap.ntl.bts.gov/view/dot/93034
United States. Federal Highway Administration. Office of Engineering (1994). Buy America Guidance [Memorandum].

United States. Federal Highway Administration. Office of Engineering "Buy America Guidance [Memorandum]" (1994)

United States. Federal Highway Administration. Office of Engineering "Buy America Guidance [Memorandum]" , 1994
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Office of Engineering A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The purpose of this memorandum is to disseminate the findings of the recent nationwide Buy America materials certification review and to discuss actions which we are taking as a result of that review. AN - dot:93034 KW - Government funding KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Federal Highway Administration. Office of Engineering PY - 1994-07-11 T2 - Memoranda & Guidance: Information TI - Buy America Guidance [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93034 ER - DB - ROSA P
Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants On or After August 16, 2023, And Before October 1, 2025

United States. Department of Transportation. Federal Highway Administration

2026-01-05 | Memoranda & Guidance: Guidance | PDF

The USDOT waiver exempts certain FHWA projects from Buy America requirements if non-compliant materials are under $1 million or 5% of project costs, with specific rules for steel, iron, and manufactured products. It applies to awards after August 16, 2023 and before October 1, 2025, and requires tracking change orders, project costs, and federal as ...

08/17/2026

Title : Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants On or After August 16, 2023, And Before October 1, 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2026-01-05 Series : Memoranda & Guidance: Guidance URL : https://rosap.ntl.bts.gov/view/dot/93033
United States. Department of Transportation. Federal Highway Administration (2026). Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants On or After August 16, 2023, And Before October 1, 2025.

United States. Department of Transportation. Federal Highway Administration "Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants On or After August 16, 2023, And Before October 1, 2025" (2026)

United States. Department of Transportation. Federal Highway Administration "Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants On or After August 16, 2023, And Before October 1, 2025" , 2026
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The USDOT waiver exempts certain FHWA projects from Buy America requirements if non-compliant materials are under $1 million or 5% of project costs, with specific rules for steel, iron, and manufactured products. It applies to awards after August 16, 2023 and before October 1, 2025, and requires tracking change orders, project costs, and federal assistance across multiple awards or phases. AN - dot:93033 KW - Government funding KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2026-01-05 T2 - Memoranda & Guidance: Guidance TI - Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants On or After August 16, 2023, And Before October 1, 2025 M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93033 ER - DB - ROSA P
Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants on or After October 1, 2025

United States. Department of Transportation. Federal Highway Administration

2026-01-05 | Memoranda & Guidance: Guidance | PDF

The USDOT waiver exempts small projects and de minimis costs from Buy America requirements, applying to manufactured products and construction materials, with thresholds of $1 million or 5% of project costs and $500,000 in federal aid. Non-compliance is based on manufacturing location and component content, with tracking of project costs, change or ...

08/17/2026

Title : Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants on or After October 1, 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2026-01-05 Series : Memoranda & Guidance: Guidance URL : https://rosap.ntl.bts.gov/view/dot/93032
United States. Department of Transportation. Federal Highway Administration (2026). Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants on or After October 1, 2025.

United States. Department of Transportation. Federal Highway Administration "Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants on or After October 1, 2025" (2026)

United States. Department of Transportation. Federal Highway Administration "Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants on or After October 1, 2025" , 2026
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The USDOT waiver exempts small projects and de minimis costs from Buy America requirements, applying to manufactured products and construction materials, with thresholds of $1 million or 5% of project costs and $500,000 in federal aid. Non-compliance is based on manufacturing location and component content, with tracking of project costs, change orders, and separate steel and iron considerations essential for compliance. AN - dot:93032 KW - Government funding KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2026-01-05 T2 - Memoranda & Guidance: Guidance TI - Q&As for the Waiver of Buy America Requirements for De Minimis Costs and Small Grants on or After October 1, 2025 M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93032 ER - DB - ROSA P
Pre October 23, 2023: Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act

United States. Department of Transportation. Federal Highway Administration

2026-01-05 | Memoranda & Guidance: Guidance | PDF

The BABA, part of the Infrastructure Investment and Jobs Act, Pub. L. 117-58 (Nov. 15, 2021), establishes several procedural and substantive requirements with respect to Buy America. The procedural requirements under BABA, generally focused on Buy America implementation, include requirements for agencies to review existing Buy America preference re ...

08/17/2026

Title : Pre October 23, 2023: Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2026-01-05 Series : Memoranda & Guidance: Guidance URL : https://rosap.ntl.bts.gov/view/dot/93031
United States. Department of Transportation. Federal Highway Administration (2026). Pre October 23, 2023: Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act.

United States. Department of Transportation. Federal Highway Administration "Pre October 23, 2023: Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act" (2026)

United States. Department of Transportation. Federal Highway Administration "Pre October 23, 2023: Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act" , 2026
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The BABA, part of the Infrastructure Investment and Jobs Act, Pub. L. 117-58 (Nov. 15, 2021), establishes several procedural and substantive requirements with respect to Buy America. The procedural requirements under BABA, generally focused on Buy America implementation, include requirements for agencies to review existing Buy America preference requirements, submit reports to the Office of Management and Budget (OMB) and to Congress, review waivers of general applicability, and coordinate with the Made in America Office (MIAO) within OMB in the processing of waivers. See BABA Sections 70913(a) and (b); 70914(d); and 70923(b). The substantive requirements under BABA include a Buy America preference that all Federal agencies must apply to any Federal financial assistance program for infrastructure that is not already subject to existing Buy America requirements for the relevant categories. See BABA Sections 70914(a) and 70917(a). AN - dot:93031 KW - Government funding KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2026-01-05 T2 - Memoranda & Guidance: Guidance TI - Pre October 23, 2023: Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93031 ER - DB - ROSA P
On or After March 20, 2025: Q&As for Infrastructure Investment and Jobs Act Build America, Buy America Act and the Implementation of the OMB Final Guidance In 2 CFR Parts 184 and 200 for Federal Financial Assistance Programs

United States. Department of Transportation. Federal Highway Administration

2026-01-05 | Memoranda & Guidance: Guidance | PDF

The BABA, part of the Infrastructure Investment and Jobs Act, Pub. L. 117-58 (Nov. 15, 2021), establishes several procedural and substantive requirements with respect to Buy America. The procedural requirements under BABA, generally focused on Buy America implementation, include requirements for agencies to review existing Buy America preference re ...

08/17/2026

Title : On or After March 20, 2025: Q&As for Infrastructure Investment and Jobs Act Build America, Buy America Act and the Implementation of the OMB Final Guidance In 2 CFR Parts 184 and 200 for Federal Financial Assistance Programs Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2026-01-05 Series : Memoranda & Guidance: Guidance URL : https://rosap.ntl.bts.gov/view/dot/93030
United States. Department of Transportation. Federal Highway Administration (2026). On or After March 20, 2025: Q&As for Infrastructure Investment and Jobs Act Build America, Buy America Act and the Implementation of the OMB Final Guidance In 2 CFR Parts 184 and 200 for Federal Financial Assistance Programs.

United States. Department of Transportation. Federal Highway Administration "On or After March 20, 2025: Q&As for Infrastructure Investment and Jobs Act Build America, Buy America Act and the Implementation of the OMB Final Guidance In 2 CFR Parts 184 and 200 for Federal Financial Assistance Programs" (2026)

United States. Department of Transportation. Federal Highway Administration "On or After March 20, 2025: Q&As for Infrastructure Investment and Jobs Act Build America, Buy America Act and the Implementation of the OMB Final Guidance In 2 CFR Parts 184 and 200 for Federal Financial Assistance Programs" , 2026
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The BABA, part of the Infrastructure Investment and Jobs Act, Pub. L. 117-58 (Nov. 15, 2021), establishes several procedural and substantive requirements with respect to Buy America. The procedural requirements under BABA, generally focused on Buy America implementation, include requirements for agencies to review existing Buy America preference requirements, submit reports to the Office of Management and Budget (OMB) and to Congress, review waivers of general applicability, and coordinate with the Made in America Office (MIAO) within OMB in the processing of waivers. See BABA Sections 70913(a) and (b); 70914(d); and 70923(b). The substantive requirements under BABA include a Buy America preference that all Federal agencies must apply to any Federal financial assistance program for infrastructure that is not already subject to existing Buy America requirements for the relevant categories. See BABA Sections 70914(a) and 70917(a). AN - dot:93030 KW - Government funding KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2026-01-05 T2 - Memoranda & Guidance: Guidance TI - On or After March 20, 2025: Q&As for Infrastructure Investment and Jobs Act Build America, Buy America Act and the Implementation of the OMB Final Guidance In 2 CFR Parts 184 and 200 for Federal Financial Assistance Programs M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93030 ER - DB - ROSA P
On or After October 23, 2023 and before March 20, 2025; Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act and Implementation of the OMB Final Guidance in 2 CFR 184 and 200 For Federal Financial Assistance Programs

United States. Department of Transportation. Federal Highway Administration

2026-01-05 | Memoranda & Guidance: Guidance | PDF

The BABA, part of the Infrastructure Investment and Jobs Act, Pub. L. 117-58 (Nov. 15, 2021), establishes several procedural and substantive requirements with respect to Buy America. The procedural requirements under BABA, generally focused on Buy America implementation, include requirements for agencies to review existing Buy America preference re ...

08/17/2026

Title : On or After October 23, 2023 and before March 20, 2025; Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act and Implementation of the OMB Final Guidance in 2 CFR 184 and 200 For Federal Financial Assistance Programs Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2026-01-05 Series : Memoranda & Guidance: Guidance URL : https://rosap.ntl.bts.gov/view/dot/93029
United States. Department of Transportation. Federal Highway Administration (2026). On or After October 23, 2023 and before March 20, 2025; Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act and Implementation of the OMB Final Guidance in 2 CFR 184 and 200 For Federal Financial Assistance Programs.

United States. Department of Transportation. Federal Highway Administration "On or After October 23, 2023 and before March 20, 2025; Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act and Implementation of the OMB Final Guidance in 2 CFR 184 and 200 For Federal Financial Assistance Programs" (2026)

United States. Department of Transportation. Federal Highway Administration "On or After October 23, 2023 and before March 20, 2025; Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act and Implementation of the OMB Final Guidance in 2 CFR 184 and 200 For Federal Financial Assistance Programs" , 2026
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The BABA, part of the Infrastructure Investment and Jobs Act, Pub. L. 117-58 (Nov. 15, 2021), establishes several procedural and substantive requirements with respect to Buy America. The procedural requirements under BABA, generally focused on Buy America implementation, include requirements for agencies to review existing Buy America preference requirements, submit reports to the Office of Management and Budget (OMB) and to Congress, review waivers of general applicability, and coordinate with the Made in America Office (MIAO) within OMB in the processing of waivers. See BABA Sections 70913(a) and (b); 70914(d); and 70923(b). The substantive requirements under BABA include a Buy America preference that all Federal agencies must apply to any Federal financial assistance program for infrastructure that is not already subject to existing Buy America requirements for the relevant categories. See BABA Sections 70914(a) and 70917(a). AN - dot:93029 KW - Government funding KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2026-01-05 T2 - Memoranda & Guidance: Guidance TI - On or After October 23, 2023 and before March 20, 2025; Q&As for Infrastructure Investment and Jobs Act - Build America, Buy America Act and Implementation of the OMB Final Guidance in 2 CFR 184 and 200 For Federal Financial Assistance Programs M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93029 ER - DB - ROSA P
Phase III: Implementation of Shallow Foundations on Florida Limestone in FB-MultiPier

Rodgers, Michael

;

Wasman, Scott

2026-07-01 | PDF

The study highlights the implementation of shallow foundation analysis and design into the finite element software FB-MultiPier. Key details of the report are: ⅰ) Bearing capacity, settlement, and passive resistance of shallow foundations in Florida limestone are characterized with a graphical user input/output FEM software; ⅱ) Bearing capacity of ...

08/17/2026

Title : Phase III: Implementation of Shallow Foundations on Florida Limestone in FB-MultiPier Creator(s) : Rodgers, Michael;Wasman, Scott;Faraone, Michael;Patil, Anand ;McVay, Michael;Yang, Kunyu;Podder, Suchana;Islam, Mayesha; Corporate Creator(s) : University of Florida. Dept. of Civil and Coastal Engineering;Princeton University; Corporate Contributor(s) : Florida. Department of Transportation Published Date : 2026-07-01 URL : https://rosap.ntl.bts.gov/view/dot/93028
Rodgers, Michael et al. (2026). Phase III: Implementation of Shallow Foundations on Florida Limestone in FB-MultiPier.

Rodgers, Michael et al. "Phase III: Implementation of Shallow Foundations on Florida Limestone in FB-MultiPier" (2026)

Rodgers, Michael et al. "Phase III: Implementation of Shallow Foundations on Florida Limestone in FB-MultiPier" , 2026
Export RIS Citation Information. TY - Tech Report AU - Rodgers, Michael AU - Wasman, Scott AU - Faraone, Michael AU - Patil, Anand AU - McVay, Michael AU - Yang, Kunyu AU - Podder, Suchana AU - Islam, Mayesha A2 - University of Florida. Dept. of Civil and Coastal Engineering A2 - Princeton University A3 - Florida. Department of Transportation AB - The study highlights the implementation of shallow foundation analysis and design into the finite element software FB-MultiPier. Key details of the report are: ⅰ) Bearing capacity, settlement, and passive resistance of shallow foundations in Florida limestone are characterized with a graphical user input/output FEM software; ⅱ) Bearing capacity of rigid rock using the Hoek-Brown method, iii) Strength envelops specific to Florida limestone formations can be selected by the engineer or defined by entry of the intact properties and adjusted recovery or the mass properties; iv) Single limestone layer and limestone over sand cases can be modeled for bearing capacity and settlement; v) Strength envelopes that describe passive resistance (extension q-p space) are discussed and implemented; vi) Lateral resistance on a shallow foundation from base friction or passive soil/rock resistance for normal and oblique loading conditions are considered; vii) Case of inclined loading, i.e. reduced bearing capacity of Florida limestone as a function of the angle of the inclined load (ratio of horizontal to vertical loads) and the limestone friction angle are included; note, using the inclination factor methods for soil in AASHTO LRFD Bridge Design Specifications and may be underpredicted; viii) Bearing capacity of eccentrically loaded shallow foundations on Florida limestone may be estimated using Meyerhof's effective footing width (B' = B - 2e); ix) Implementation outcomes and design example sets covering the full range of shallow foundation design features for bearing capacity, settlement, passive resistance, and base friction are included, as are recommendations for assessing the heterogeneity of limestone with the minimum number of field and lab tests to identify spatial varying unit weight, friction angle, cohesion, modulus in the foundation footprint of the site. AN - dot:93028 ET - Final Report: 4/2023 - 7/2026 KW - Mat foundations KW - Limestone KW - Bearing capacity KW - Loads KW - Implementation KW - Friction KW - Laboratory tests KW - Modulus KW - Rocks KW - Soils KW - Finite element method KW - Shallow Foundation Design KW - Florida Limestone KW - Bearing Capacity KW - Load-settlement response KW - Passive load displacement KW - FB-MultiPier LA - English PB - Florida. Department of Transportation PY - 2026-07-01 TI - Phase III: Implementation of Shallow Foundations on Florida Limestone in FB-MultiPier M3 - Tech Report N1 - United States N1 - BED31-977-17 UR - https://rosap.ntl.bts.gov/view/dot/93028 ER - DB - ROSA P

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