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Showing 1 - 20 of 460 results

Improved Reaction-To-Fire Test for Particulate Metals and Method to Evaluate the Efficacy and Limitations of Liquid Suppressant Agents for Metals Fires and Waste Hazard Reduction

Buc, Elizabeth

2021-03-31 | PDF

This project investigates gaps in the UN Dangerous Goods Tests and Criteria Test N.1, which applies for both metals and non-metals. Metal and metal alloy fires are different from non-metal fires in that they typically burn at higher temperatures and are difficult to extinguish. Like non-metals, fine metal powders with high surface area can ignite r ...

07/08/2026

Title : Improved Reaction-To-Fire Test for Particulate Metals and Method to Evaluate the Efficacy and Limitations of Liquid Suppressant Agents for Metals Fires and Waste Hazard Reduction Creator(s) : Buc, Elizabeth Corporate Creator(s) : Fire and Materials Research Laboratory, LLC Corporate Contributor(s) : United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration Published Date : 2021-03-31 URL : https://rosap.ntl.bts.gov/view/dot/92420 Buc, Elizabeth (2021). Improved Reaction-To-Fire Test for Particulate Metals and Method to Evaluate the Efficacy and Limitations of Liquid Suppressant Agents for Metals Fires and Waste Hazard Reduction. Buc, Elizabeth "Improved Reaction-To-Fire Test for Particulate Metals and Method to Evaluate the Efficacy and Limitations of Liquid Suppressant Agents for Metals Fires and Waste Hazard Reduction" (2021) Buc, Elizabeth "Improved Reaction-To-Fire Test for Particulate Metals and Method to Evaluate the Efficacy and Limitations of Liquid Suppressant Agents for Metals Fires and Waste Hazard Reduction" , 2021 Export RIS Citation Information. TY - Tech Report AU - Buc, Elizabeth A2 - Fire and Materials Research Laboratory, LLC A3 - United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration AB - This project investigates gaps in the UN Dangerous Goods Tests and Criteria Test N.1, which applies for both metals and non-metals. Metal and metal alloy fires are different from non-metal fires in that they typically burn at higher temperatures and are difficult to extinguish. Like non-metals, fine metal powders with high surface area can ignite readily, burn rapidly, and are more likely to explode or cause a flash fire if dispersed in air. This research found a range of burning rates, different ignition behaviors under a torch flame, and high temperatures measured in burn tests. The report also proposed an improved screening method to distinguish flammable solids. The improved method includes a stronger ignition source and requires the finest fraction be isolated for testing before exclusion from Division 4.1. Further recommendations were made for the full burn test, including clarification of test procedure language and descriptions of hazards. AN - dot:92420 ET - Final Report KW - Hazardous materials KW - Materials by flammability KW - Test procedures KW - Commodity classification KW - Fire LA - English PB - United States. Department of Transportation. Pipeline and Hazardous Materials Safety Administration PY - 2021-03-31 TI - Improved Reaction-To-Fire Test for Particulate Metals and Method to Evaluate the Efficacy and Limitations of Liquid Suppressant Agents for Metals Fires and Waste Hazard Reduction M3 - Tech Report N1 - United States N1 - 693JK319C000001 UR - https://rosap.ntl.bts.gov/view/dot/92420 ER -
First Annual Highway Traffic Safety Trend Report

Stein, M. ;

Beauregard, M.

1982-04-19 | PDF

The authors review accident and accident exposure trends in the U.S. from 1950 to 1980. Accident trends assessed include fatalities, fatal accidents injuries, injury accidents, police reported and total vehicular accidents. Exposure trends are vehicle miles of travel (VMT), roadway miles by surface type and roadway class, licensed drivers, register ...

07/06/2026

Title : First Annual Highway Traffic Safety Trend Report Creator(s) : Stein, M.;Beauregard, M.;Bragg, B.; Corporate Creator(s) : Abt Associates Inc. Corporate Contributor(s) : United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis Published Date : 1982-04-19 URL : https://rosap.ntl.bts.gov/view/dot/92419 Stein, M. et al. (1982). First Annual Highway Traffic Safety Trend Report. Stein, M. and Beauregard, M. and Bragg, B. "First Annual Highway Traffic Safety Trend Report" (1982) Stein, M. et al. "First Annual Highway Traffic Safety Trend Report" , 1982 Export RIS Citation Information. TY - Tech Report AU - Stein, M. AU - Beauregard, M. AU - Bragg, B. A2 - Abt Associates Inc. A3 - United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis AB - The authors review accident and accident exposure trends in the U.S. from 1950 to 1980. Accident trends assessed include fatalities, fatal accidents injuries, injury accidents, police reported and total vehicular accidents. Exposure trends are vehicle miles of travel (VMT), roadway miles by surface type and roadway class, licensed drivers, registered vehicles population and numbers of households. The authors present comparisons of changes in these trends for 1950 to 1960,1960 to 1970, 1970 to 1980 and other selected intervening years. Comparisons are provided in the forms of ratios (e.g., injuries to injury accidents), indicators(e.g., fatalities per billion vehicle miles of travel) and composite indicators(e.g., fatal accident involvement rate by driver's age and sex characteristics adjusted for exposure). In addition, detailed assessment of trends is provided for urban and rural areas, regions (e.g., sunbelt and snowbelt), and for fatal accidents trends between 1975 and 1980 when the effects of vehicle mix shifts, weekly time segments, alcohol involvement and posted speed are included as variables in the assessment. The authors conclude that fatal and property damage are not growing as rapidly as exposure related variables such as VMT. However, the annual growth rate for injuries exceeds that of VMT. The authors concluded that accident and exposure trends be monitored on a continuing basis and that emphasis be placed on the design of a balanced data base necessary to develop in depth interpretations and projections of these trends. AN - dot:92419 ET - Final Task Report 3/81 to 9/81 KW - Vehicle miles of travel KW - Crash exposure KW - Fatalities KW - Injuries KW - Rural areas KW - Statistical trends KW - Traffic crashes KW - Traffic safety KW - Urban areas KW - accident trends KW - trends in vehicle KW - accident cost trends LA - English PB - United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis PY - 1982-04-19 TI - First Annual Highway Traffic Safety Trend Report M3 - Tech Report N1 - United States N1 - DTNH 22-80-C-17062 UR - https://rosap.ntl.bts.gov/view/dot/92419 ER -
Federal Aviation Administration Activities in the Agency’s 50th Year: An In-depth Report

United States. Department of Transportation. Federal Aviation Administration

1976-01-01 | PDF

What does FAA with its worldwide organization, its 58,000 employees and its $3 billion annual budget, accomplish in a given year? This report is an attempt to answer that question as fully as possible for a representative year--in this case, the agency's 50th. Its activities were chosen for in-depth examination for at least three principal reasons: ...

07/06/2026

Title : Federal Aviation Administration Activities in the Agency’s 50th Year: An In-depth Report Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration Published Date : 1976-01-01 URL : https://rosap.ntl.bts.gov/view/dot/92418 United States. Department of Transportation. Federal Aviation Administration (1976). Federal Aviation Administration Activities in the Agency’s 50th Year: An In-depth Report. United States. Department of Transportation. Federal Aviation Administration "Federal Aviation Administration Activities in the Agency’s 50th Year: An In-depth Report" (1976) United States. Department of Transportation. Federal Aviation Administration "Federal Aviation Administration Activities in the Agency’s 50th Year: An In-depth Report" , 1976 Export RIS Citation Information. TY - Other A2 - United States. Department of Transportation. Federal Aviation Administration AB - What does FAA with its worldwide organization, its 58,000 employees and its $3 billion annual budget, accomplish in a given year? This report is an attempt to answer that question as fully as possible for a representative year--in this case, the agency's 50th. Its activities were chosen for in-depth examination for at least three principal reasons: first, because the year was an important landmark in the agency's history justifying such an examination; second, because the review would provide a valuable benchmark for measuring the accomplishments of future years; and third, because much of what the agency accomplished during the year was addressed to meeting the challenges of the '80's - the crucial eighth decade of the 20th century in which we now find ourselves. AN - dot:92418 KW - Air pilots KW - Air traffic control KW - Air transportation crashes KW - Aircraft KW - Aviation safety KW - Casualties KW - Fatalities KW - History KW - Benchmarks LA - English PB - United States. Department of Transportation. Federal Aviation Administration PY - 1976-01-01 TI - Federal Aviation Administration Activities in the Agency’s 50th Year: An In-depth Report M3 - Other N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92418 ER -
Development of UAS-Enabled Bridge Deck Inspection System From Investigation to Implementation

Almasi, Pouya ;

Zhang, Qianyun

2026-05-31 | PDF

We introduce a pilot study that is geared towards inaugurating a UAS-centric bridge inspection program, operating on a component-level approach, with the overarching goal of enhancing the caliber of bridge inspection methodologies within the confines of New Mexico. The envisioned program encompasses the formulation of UAS-based inspection strategie ...

07/06/2026

Title : Development of UAS-Enabled Bridge Deck Inspection System From Investigation to Implementation Creator(s) : Almasi, Pouya;Zhang, Qianyun;Zhang, Su; Corporate Creator(s) : New Mexico State University. Department of Civil Engineering;University of New Mexico; Corporate Contributor(s) : New Mexico. Department of Transportation. Research Bureau Published Date : 2026-05-31 Report Number : R924070 URL : https://rosap.ntl.bts.gov/view/dot/92417 Almasi, Pouya et al. (2026). Development of UAS-Enabled Bridge Deck Inspection System From Investigation to Implementation. Almasi, Pouya and Zhang, Qianyun and Zhang, Su "Development of UAS-Enabled Bridge Deck Inspection System From Investigation to Implementation" (2026) Almasi, Pouya et al. "Development of UAS-Enabled Bridge Deck Inspection System From Investigation to Implementation" , 2026 Export RIS Citation Information. TY - Tech Report AU - Almasi, Pouya AU - Zhang, Qianyun AU - Zhang, Su A2 - New Mexico State University. Department of Civil Engineering A2 - University of New Mexico A3 - New Mexico. Department of Transportation. Research Bureau AB - We introduce a pilot study that is geared towards inaugurating a UAS-centric bridge inspection program, operating on a component-level approach, with the overarching goal of enhancing the caliber of bridge inspection methodologies within the confines of New Mexico. The envisioned program encompasses the formulation of UAS-based inspection strategies, the establishment of frameworks for data interpretation, and the development of specialized software implementations tailored to individual bridge components as delineated in the National Bridge Inventory (NBI). To achieve automated data acquisition, cutting-edge UAS platforms equipped with high-resolution sensors will be deployed. Moreover, innovative algorithms for image processing and machine learning will be investigated to facilitate the semi-automated or fully automated analysis of the amassed data. Intuitive software applications, constructed upon these novel algorithms, will be devised to facilitate practical implementation. In addition, a dedicated workshop will be orchestrated for the personnel of the New Mexico Department of Transportation (NMDOT), providing a platform to showcase the tangible research outcomes stemming from the proposed project. This strategic initiative serves to broaden the reach and amplify the impact of the research endeavors undertaken. AN - dot:92417 ET - Final Report: Jan 1, 2024 – June 12, 2026 KW - Bridge decks KW - Data collection KW - Inspection KW - Unmanned aircraft systems KW - Implementation KW - Pilot studies LA - English PB - New Mexico. Department of Transportation. Research Bureau PY - 2026-05-31 SN - R924070 TI - Development of UAS-Enabled Bridge Deck Inspection System From Investigation to Implementation M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92417 ER -
Wet Pond Modeling for Contaminant Retention and Maintenance

Herb, William ;

Natarajan, Poornima

2026-05-01 | PDF

We have found that many ponds are stratified at 0.3m (1ft) depth, often resulting in a bottom region of low dissolved oxygen water and thereby causing the pond to release phosphorus trapped in the bottom sediments back into the water column. It is critical to maintain treatment capacity to reduce pollution to downstream priority waters. This resear ...

07/06/2026

Title : Wet Pond Modeling for Contaminant Retention and Maintenance Creator(s) : Herb, William;Natarajan, Poornima;Janke, Benjamin D.;Gulliver, John S.;Finlay, Jacques C.; Corporate Creator(s) : University of Minnesota, Minneapolis. St. Anthony Falls Laboratory;Local Road Research Board; Corporate Contributor(s) : Minnesota. Department of Transportation. Office of Research & Innovation Published Date : 2026-05-01 Report Number : MN 2026-18 URL : https://rosap.ntl.bts.gov/view/dot/92416 Herb, William et al. (2026). Wet Pond Modeling for Contaminant Retention and Maintenance. Herb, William et al. "Wet Pond Modeling for Contaminant Retention and Maintenance" (2026) Herb, William et al. "Wet Pond Modeling for Contaminant Retention and Maintenance" , 2026 Export RIS Citation Information. TY - Tech Report AU - Herb, William AU - Natarajan, Poornima AU - Janke, Benjamin D. AU - Gulliver, John S. AU - Finlay, Jacques C. A2 - University of Minnesota, Minneapolis. St. Anthony Falls Laboratory A2 - Local Road Research Board A3 - Minnesota. Department of Transportation. Office of Research & Innovation AB - We have found that many ponds are stratified at 0.3m (1ft) depth, often resulting in a bottom region of low dissolved oxygen water and thereby causing the pond to release phosphorus trapped in the bottom sediments back into the water column. It is critical to maintain treatment capacity to reduce pollution to downstream priority waters. This research investigates maintenance approaches to mitigate phosphorus pollution from ponds. The main objectives and tasks of the project are to collect field measurements and perform data analysis to verify a pond model, MinPond, and model pond management methods that can reduce phosphorus export for six ponds. The major conclusions are: an intense street sweeping regime is the most cost-effective means of reducing phosphorus export from a stormwater pond or historic wetland that serves as a stormwater practice by decreasing the load coming from the watershed; chemical treatment of the sediments is another effective means of reducing phosphorus export but only when the phosphorus release from the sediments is substantial; and Bubble aeration that is successful in destratifying the water column can bring oxygen down to the sediments and reduce a high phosphorus release from the sediments. AN - dot:92416 ET - Final Report KW - Ponding KW - Phosphorus KW - Water quality management KW - Computer models KW - Contaminants KW - Runoff LA - English PB - Minnesota. Department of Transportation. Office of Research & Innovation PY - 2026-05-01 SN - MN 2026-18 TI - Wet Pond Modeling for Contaminant Retention and Maintenance M3 - Tech Report N1 - United States N1 - (c) 1036342 (wo) 81 UR - https://rosap.ntl.bts.gov/view/dot/92416 ER -
Single-Camera Time-Resolved Laser-Induced Incandescence Measurements in a RQL Aeroengine Combustor

McGrath, Russell ;

Bugay, Ezekiel M.

2023-03-22 | PDF

Understanding and measuring the formation of non-volatile particulate matter is important for minimizing emissions and improving the design of aeroengines. In rich-burn, quick-mix, lean-burn (RQL) combustors, significant quantities of soot are formed near the injectors, some of which is later oxidized downstream. In order to better understand the s ...

07/06/2026

Title : Single-Camera Time-Resolved Laser-Induced Incandescence Measurements in a RQL Aeroengine Combustor Creator(s) : McGrath, Russell;Bugay, Ezekiel M.;Juergensmeyer, Jeremiah;Zheng, Andy X.;Wu, David;Steinberg, Adam;Sun, Wenting;Mazumdar, Yi Chen; 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 : 2023-03-22 Report Number : McGrath_TiReLII_USNCM2023 URL : https://rosap.ntl.bts.gov/view/dot/92415 McGrath, Russell et al. (2023). Single-Camera Time-Resolved Laser-Induced Incandescence Measurements in a RQL Aeroengine Combustor. McGrath, Russell et al. "Single-Camera Time-Resolved Laser-Induced Incandescence Measurements in a RQL Aeroengine Combustor" (2023) McGrath, Russell et al. "Single-Camera Time-Resolved Laser-Induced Incandescence Measurements in a RQL Aeroengine Combustor" , 2023 Export RIS Citation Information. TY - Proceedings AU - McGrath, Russell AU - Bugay, Ezekiel M. AU - Juergensmeyer, Jeremiah AU - Zheng, Andy X. AU - Wu, David AU - Steinberg, Adam AU - Sun, Wenting AU - Mazumdar, Yi Chen 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 - Understanding and measuring the formation of non-volatile particulate matter is important for minimizing emissions and improving the design of aeroengines. In rich-burn, quick-mix, lean-burn (RQL) combustors, significant quantities of soot are formed near the injectors, some of which is later oxidized downstream. In order to better understand the soot formation dynamics in RQL burners, diagnostics that can measure both soot volume fraction and estimate soot particle sizes are needed. In this work, we describe the design, construction, and control of a high pressure RQL aeroengine combustor that is operated with Jet A fuel. Next, the development and implementation of two-dimensional single-camera time-resolved laser-induced incandescence (TiRe-LII) technique is described. In this technique, a single laser pulse is formed into a sheet and used to heat the soot inside the combustor. Then, a single ultra-high-speed camera is used to capture both the prompt LII signal and the soot incandescence decay over time at up to 10 MHz. By combining these images with a TiRe-LII model that is validated against soot sampling results from a Jet A fame, it is possible to estimate both the primary soot particle size and the soot volume fraction near the fuel injectors. By combining these measurements, a clearer picture of soot formation can be determined for RQL combustion. AB - Citation: McGrath, R., Bugay, E. M., Juergensmeyer, J., Zheng, A. X., Wu, D., Steinberg, A., Sun, W., & Mazumdar, Y. C. (2023, March). Single-camera time-resolved laser-induced incandescence measurements in a RQL aeroengine combustor. In 13th United States national combustion meeting. USNCM, Sub topic: Diagnostics (pp. 22-31). AN - dot:92415 KW - Cameras KW - Lasers KW - Particles KW - Combustion KW - Aviation fuels KW - ASCENT KW - Laser-induced Incandescence KW - Soot Volume Fraction KW - Soot Primary Particle Size KW - Rich-burn Quick-mix Lean-burn Combustor LA - English PB - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment PY - 2023-03-22 SN - McGrath_TiReLII_USNCM2023 TI - Single-Camera Time-Resolved Laser-Induced Incandescence Measurements in a RQL Aeroengine Combustor M3 - Proceedings N1 - United States N1 - 13-C-AJFE-GIT-080 N1 - Open Access UR - https://rosap.ntl.bts.gov/view/dot/92415 ER -
Mitigation of Tenting of Transverse Cracks and Joints in Asphalt Pavement

Barman, Manik ;

Chakraborty, Manik

2026-04-01 | PDF

Transverse cracking, a primary distress in cold-climate asphalt pavements, can lead to tenting, an upward distortion caused by ice formation in the base layer and at the interface of the surface and base layers. This research investigated pavement treatment efficacy and core tenting mechanisms through field measurements in six selected roads in Min ...

07/06/2026

Title : Mitigation of Tenting of Transverse Cracks and Joints in Asphalt Pavement Creator(s) : Barman, Manik;Chakraborty, Manik;Asante, Chrysogonus;Marasteanu, Mihai;Turos, Mugurel; Corporate Creator(s) : University of Minnesota, Duluth. Department of Civil Engineering;Local Road Research Board; Corporate Contributor(s) : Minnesota. Department of Transportation. Office of Research & Innovation Published Date : 2026-04-01 Report Number : MN 2026-16 URL : https://rosap.ntl.bts.gov/view/dot/92414 Barman, Manik et al. (2026). Mitigation of Tenting of Transverse Cracks and Joints in Asphalt Pavement. Barman, Manik et al. "Mitigation of Tenting of Transverse Cracks and Joints in Asphalt Pavement" (2026) Barman, Manik et al. "Mitigation of Tenting of Transverse Cracks and Joints in Asphalt Pavement" , 2026 Export RIS Citation Information. TY - Tech Report AU - Barman, Manik AU - Chakraborty, Manik AU - Asante, Chrysogonus AU - Marasteanu, Mihai AU - Turos, Mugurel A2 - University of Minnesota, Duluth. Department of Civil Engineering A2 - Local Road Research Board A3 - Minnesota. Department of Transportation. Office of Research & Innovation AB - Transverse cracking, a primary distress in cold-climate asphalt pavements, can lead to tenting, an upward distortion caused by ice formation in the base layer and at the interface of the surface and base layers. This research investigated pavement treatment efficacy and core tenting mechanisms through field measurements in six selected roads in Minnesota and through laboratory testing of base layer materials. A critical outcome was the development of the Coarse Void/Fine Void (CV/FV) index to predict frost susceptibility. Results indicated that the distribution of voids was a more significant predictor than fine content alone. A CV/FV index below 0.88 was found to lower tenting potential. Furthermore, the study identified micro-surfacing as an effective treatment for mitigating roughness on Bituminous over Aggregate Base (BAB) and Bituminous over Bituminous (BOB) pavements. The project concluded with the creation of three decision trees, offering engineers a practical framework for selecting base materials and maintenance strategies to enhance pavement longevity in frost-prone regions. AN - dot:92414 ET - Final Report KW - Asphalt pavements KW - Transverse cracking KW - Frost heaving KW - Preventive maintenance KW - Pavement maintenance KW - Pavement base course KW - Aggregate gradation KW - Mathematical prediction KW - Joints KW - Bituminous aggregates LA - English PB - Minnesota. Department of Transportation. Office of Research & Innovation PY - 2026-04-01 SN - MN 2026-16 TI - Mitigation of Tenting of Transverse Cracks and Joints in Asphalt Pavement M3 - Tech Report N1 - United States N1 - (c)1036342 (wo) 51 UR - https://rosap.ntl.bts.gov/view/dot/92414 ER -
Advancing Equity in Capital Investment Decision-Making

Sarmiento, Camila Fonseca ;

Roy, Alan

2025-11-01 | PDF

Transportation capital investment planning plays a crucial role in shaping infrastructure that supports community growth and well-being. While many studies have examined capital investment decisions within specific jurisdictions, there is limited understanding of how equity is defined, measured, and integrated into these processes more broadly. Thi ...

07/06/2026

Title : Advancing Equity in Capital Investment Decision-Making Creator(s) : Sarmiento, Camila Fonseca;Roy, Alan;Cheng, Yuan;Douma, Frank;Zhao, Jerry; Corporate Creator(s) : University of Minnesota. Humphrey School of Public Affairs Corporate Contributor(s) : Minnesota. Department of Transportation. Office of Research & Innovation Published Date : 2025-11-01 Report Number : MN 2026-02 URL : https://rosap.ntl.bts.gov/view/dot/92413 Sarmiento, Camila Fonseca et al. (2025). Advancing Equity in Capital Investment Decision-Making. Sarmiento, Camila Fonseca et al. "Advancing Equity in Capital Investment Decision-Making" (2025) Sarmiento, Camila Fonseca et al. "Advancing Equity in Capital Investment Decision-Making" , 2025 Export RIS Citation Information. TY - Tech Report AU - Sarmiento, Camila Fonseca AU - Roy, Alan AU - Cheng, Yuan AU - Douma, Frank AU - Zhao, Jerry A2 - University of Minnesota. Humphrey School of Public Affairs A3 - Minnesota. Department of Transportation. Office of Research & Innovation AB - Transportation capital investment planning plays a crucial role in shaping infrastructure that supports community growth and well-being. While many studies have examined capital investment decisions within specific jurisdictions, there is limited understanding of how equity is defined, measured, and integrated into these processes more broadly. This research addresses this gap by investigating how equity is incorporated into transportation capital investment planning and decision making across Minnesota localities and Native Nations. The study includes a literature review, a statewide survey, and nine case studies reflecting diverse populations and practices. Findings shed light on the development of three key resources: (1) a set of successful practices for integrating equity into capital investment decisions, (2) a list of quantitative and qualitative equity metrics, and (3)a community engagement toolkit to support trust-building with historically underserved communities. These findings and tools aim to support local governments and Native Nations in improving transportation investment practices and advancing equity in infrastructure planning processes and outcomes. AN - dot:92413 ET - Final Report KW - Capital investments KW - Equity KW - Decision making KW - Native Americans KW - Transportation planning KW - Underserved communities KW - Case studies KW - Literature reviews LA - English PB - Minnesota. Department of Transportation. Office of Research & Innovation PY - 2025-11-01 SN - MN 2026-02 TI - Advancing Equity in Capital Investment Decision-Making M3 - Tech Report N1 - United States N1 - (c)1036342 (wo) 83 UR - https://rosap.ntl.bts.gov/view/dot/92413 ER -
FHWA National Strategic Plan 1998

United States. Department of Transportation. Federal Highway Administration

1998-01-01 | PDF

Through its strategic planning process, the Federal Highway Administration (FHWA) establishes the priorities and direction for its contributions to the Nation's highways and national transportation system. This 1998 Strategic Plan presents FHWA's goals and objectives over the next ten years. The contents are organized as follows: Introduction; Visi ...

07/06/2026

Title : FHWA National Strategic Plan 1998 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Published Date : 1998-01-01 URL : https://rosap.ntl.bts.gov/view/dot/92412 United States. Department of Transportation. Federal Highway Administration (1998). FHWA National Strategic Plan 1998. United States. Department of Transportation. Federal Highway Administration "FHWA National Strategic Plan 1998" (1998) United States. Department of Transportation. Federal Highway Administration "FHWA National Strategic Plan 1998" , 1998 Export RIS Citation Information. TY - Tech Report A2 - United States. Department of Transportation. Federal Highway Administration AB - Through its strategic planning process, the Federal Highway Administration (FHWA) establishes the priorities and direction for its contributions to the Nation's highways and national transportation system. This 1998 Strategic Plan presents FHWA's goals and objectives over the next ten years. The contents are organized as follows: Introduction; Vision; Mission; Values; Guiding Principles; Strategic Goals and Objectives - Mobility, Safety, Productivity, Human and Natural Environment, and National Security; Corporate Management Strategies; and Appendix. AN - dot:92412 KW - Strategic planning KW - Annual reports KW - Benchmarks KW - Performance measurement KW - Highway safety KW - Quality control KW - Intermodal transportation KW - Program management KW - Interstate highways KW - Goals KW - Mission statements KW - Values KW - Vision LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1998-01-01 TI - FHWA National Strategic Plan 1998 M3 - Tech Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92412 ER -
Design of Outlying Rapid Transit Stations

Vuchic, Vukan R. ;

Kikuchi, Shinya

1973-02-01 | PDF

This Study has three primary purposes. The first purpose is to define a methodology of design of outlying rapid transit stations in such a form that designers can utilize it in actual planning and design procedure, The second purpose is to collect and systematically present basic principles and standards of design for outlying stations, The third p ...

07/06/2026

Title : Design of Outlying Rapid Transit Stations Creator(s) : Vuchic, Vukan R.;Kikuchi, Shinya; Corporate Creator(s) : United States. Department of Transportation. Urban Mass Transportation Administration Published Date : 1973-02-01 Report Number : T712 -1 URL : https://rosap.ntl.bts.gov/view/dot/92411 Vuchic, Vukan R. and Kikuchi, Shinya (1973). Design of Outlying Rapid Transit Stations. Vuchic, Vukan R. and Kikuchi, Shinya "Design of Outlying Rapid Transit Stations" (1973) Vuchic, Vukan R. and Kikuchi, Shinya "Design of Outlying Rapid Transit Stations" , 1973 Export RIS Citation Information. TY - Tech Report AU - Vuchic, Vukan R. AU - Kikuchi, Shinya A2 - United States. Department of Transportation. Urban Mass Transportation Administration AB - This Study has three primary purposes. The first purpose is to define a methodology of design of outlying rapid transit stations in such a form that designers can utilize it in actual planning and design procedure, The second purpose is to collect and systematically present basic principles and standards of design for outlying stations, The third purpose of the study is to present actual solutions for design of the individual components of stations: the basic traffic flow patterns, relation ships of functional areas, geometric dimensions of roadways, surface transit stops, parking areas, and the like. Finally, a complete design of an outlying station based on the developed principles is presented. AN - dot:92411 KW - Bus stops KW - Kiss and ride KW - Park and ride KW - Pedestrians KW - Railroads KW - Rapid transit KW - Design LA - English PB - United States. Department of Transportation. Urban Mass Transportation Administration PY - 1973-02-01 SN - T712 -1 TI - Design of Outlying Rapid Transit Stations M3 - Tech Report N1 - United States N1 - PA-0009 UR - https://rosap.ntl.bts.gov/view/dot/92411 ER -
Cold Reclamation and Recycling Techniques to Achieve Perpetual Pavements

Sabouri, Mohammadreza ;

Wegman, Daniel E.

2026-02-01 | PDF

This study evaluates Cold In-place Recycling (CIR) for developing sustainable and cost-effective perpetual pavements. As part of the 2022 NRRA construction, four test sections were constructed at the MnROAD mainline section to utilize CIR and additionally assess the effects of incorporating rejuvenator in cold recycled asphalt materials. Two sectio ...

07/06/2026

Supporting Files

Title : Cold Reclamation and Recycling Techniques to Achieve Perpetual Pavements Creator(s) : Sabouri, Mohammadreza;Wegman, Daniel E.;Dave, Eshan;Sias, Jo E.;Al-Ihekwaba, Ebubechukwu; Corporate Creator(s) : Braun Intertec Corporation;National Road Research Alliance;University of New Hampshire; Corporate Contributor(s) : Minnesota. Department of Transportation. Office of Research & Innovation Published Date : 2026-02-01 Report Number : NRRA202604 URL : https://rosap.ntl.bts.gov/view/dot/92410 Sabouri, Mohammadreza et al. (2026). Cold Reclamation and Recycling Techniques to Achieve Perpetual Pavements. Sabouri, Mohammadreza et al. "Cold Reclamation and Recycling Techniques to Achieve Perpetual Pavements" (2026) Sabouri, Mohammadreza et al. "Cold Reclamation and Recycling Techniques to Achieve Perpetual Pavements" , 2026 Export RIS Citation Information. TY - Tech Report AU - Sabouri, Mohammadreza AU - Wegman, Daniel E. AU - Dave, Eshan AU - Sias, Jo E. AU - Al-Ihekwaba, Ebubechukwu A2 - Braun Intertec Corporation A2 - National Road Research Alliance A2 - University of New Hampshire A3 - Minnesota. Department of Transportation. Office of Research & Innovation AB - This study evaluates Cold In-place Recycling (CIR) for developing sustainable and cost-effective perpetual pavements. As part of the 2022 NRRA construction, four test sections were constructed at the MnROAD mainline section to utilize CIR and additionally assess the effects of incorporating rejuvenator in cold recycled asphalt materials. Two sections included bituminous layer over aggregate base, while the other two included bituminous overlay over stabilized full depth reclamation (SFDR) base layer. For two sections, rejuvenator was incorporated to evaluate its impact on the performance of the cold recycled (CR) layer. Laboratory tests conducted after one year of service showed that even though rejuvenator improved binder fatigue resistance, its benefits were less evident at the mixture level, where cracking resistance declined. Perpetual pavement analysis indicated bottom-up cracking potential in all test sections but suggested that reasonable adjustments to overlay or CIR thickness could achieve perpetual behavior. The contrasting outcomes between binder, mixture, and Falling Weight Deflectometer (FWD) testing highlight the need for further research to fully understand the effect of rejuvenator on the CR layer/material behavior. Additional testing, focusing on fatigue, rutting, and low-temperature performance, is recommended to refine rejuvenator use in CIR applications and optimize cold recycling techniques for perpetual pavement construction. AN - dot:92410 ET - Final Report KW - Cold in-place recycling KW - Perpetual pavements KW - Rejuvenators KW - Asphalt emulsions KW - Rehabilitation KW - Rutting KW - Laboratory tests KW - Rejuvenator emulsion KW - Sustainable pavement rehabilitation LA - English PB - Minnesota. Department of Transportation. Office of Research & Innovation PY - 2026-02-01 SN - NRRA202604 TI - Cold Reclamation and Recycling Techniques to Achieve Perpetual Pavements M3 - Tech Report N1 - United States N1 - (C)1048377 UR - https://rosap.ntl.bts.gov/view/dot/92410 ER -
Placement of Three-Quarter Inch Dowels in MnROAD Concrete Test Cell 2437 and Deployment in Interstate Highway 35 in Hinckley Minnesota

Izevbekhai, Bernard Igbafen

2025-08-01 | PDF

This research report examines the dowel placement initial testing and initial test results of the ¾ dowels at the MnROAD facility and in the test sections on Interstate 35 at Hinckley. A 36 ft by 12 ft test section was constructed on November 22, 2024, when the ambient temperature was approximately 35°F. The test cell MnROAD low volume road cell 24 ...

07/06/2026

Title : Placement of Three-Quarter Inch Dowels in MnROAD Concrete Test Cell 2437 and Deployment in Interstate Highway 35 in Hinckley Minnesota Creator(s) : Izevbekhai, Bernard Igbafen Corporate Creator(s) : Minnesota. Department of Transportation. Office of Materials and Road Research Published Date : 2025-08-01 Report Number : 2026-01 URL : https://rosap.ntl.bts.gov/view/dot/92409 Izevbekhai, Bernard Igbafen (2025). Placement of Three-Quarter Inch Dowels in MnROAD Concrete Test Cell 2437 and Deployment in Interstate Highway 35 in Hinckley Minnesota. Izevbekhai, Bernard Igbafen "Placement of Three-Quarter Inch Dowels in MnROAD Concrete Test Cell 2437 and Deployment in Interstate Highway 35 in Hinckley Minnesota" (2025) Izevbekhai, Bernard Igbafen "Placement of Three-Quarter Inch Dowels in MnROAD Concrete Test Cell 2437 and Deployment in Interstate Highway 35 in Hinckley Minnesota" , 2025 Export RIS Citation Information. TY - Tech Report AU - Izevbekhai, Bernard Igbafen A2 - Minnesota. Department of Transportation. Office of Materials and Road Research AB - This research report examines the dowel placement initial testing and initial test results of the ¾ dowels at the MnROAD facility and in the test sections on Interstate 35 at Hinckley. A 36 ft by 12 ft test section was constructed on November 22, 2024, when the ambient temperature was approximately 35°F. The test cell MnROAD low volume road cell 2437 was instrumented with vibrating wire strain gauges, thermistors, and maturity sensors to monitor strength development and performance. In this initiative, three-quarter inch-inch dowels were placed in interior joints of the test cell to evaluate reduced-diameter dowels' effectiveness for sustainable pavement applications. Analytic predictions of the influence of smaller diameter dowels were complicated by paucity of tenable equations from which test results could have been validated. Nevertheless, the sections were subjected to initial monitoring including faulting falling weigh deflectometer and physical observations. The report recommends seasonal measurements for at least 5 years. At this stage there was no measurable faulting in either test section. Preliminary data indicated high load transfer efficiency (LTE) exceeding 90% at MnROAD, higher than corresponding field tests conducted on Interstate 35 in Hinckley, MN, which showed lower LTE values. AN - dot:92409 ET - Final Report: 2024-2025 KW - Load transfer KW - Data collection KW - Performance KW - Falling weight deflectometers KW - Load Transfer Efficiency KW - MnROAD Cell LA - English PB - Minnesota. Department of Transportation. Office of Research & Innovation PY - 2025-08-01 SN - 2026-01 TI - Placement of Three-Quarter Inch Dowels in MnROAD Concrete Test Cell 2437 and Deployment in Interstate Highway 35 in Hinckley Minnesota M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/92409 ER -
LiDAR for Geotechnical Applications

Gautreau, Gavin P. ;

Nobahar, Masoud

2026-06-01 | PDF

This research focused on the utilization of Light Detection and Ranging (LiDAR) technology within the Louisiana Department of Transportation and Development (DOTD) for various geotechnical applications. The study addressed several key practices, including site investigation and reconnaissance for drilling operations, geotechnical asset management i ...

07/06/2026

Title : LiDAR for Geotechnical Applications Creator(s) : Gautreau, Gavin P.;Nobahar, Masoud; 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 : 2026-06-01 Report Number : FHWA/LA.26/727;23-1GT; URL : https://rosap.ntl.bts.gov/view/dot/92408 Gautreau, Gavin P. and Nobahar, Masoud (2026). LiDAR for Geotechnical Applications. Gautreau, Gavin P. and Nobahar, Masoud "LiDAR for Geotechnical Applications" (2026) Gautreau, Gavin P. and Nobahar, Masoud "LiDAR for Geotechnical Applications" , 2026 Export RIS Citation Information. TY - Tech Report AU - Gautreau, Gavin P. AU - Nobahar, Masoud A2 - Louisiana Transportation Research Center A3 - Louisiana. Department of Transportation and Development A3 - United States. Department of Transportation. Federal Highway Administration AB - This research focused on the utilization of Light Detection and Ranging (LiDAR) technology within the Louisiana Department of Transportation and Development (DOTD) for various geotechnical applications. The study addressed several key practices, including site investigation and reconnaissance for drilling operations, geotechnical asset management inventory data collection, change detection for forensic evaluations and monitoring, and cross-section data collection for stability analysis. The primary objective of the research was to leverage LiDAR technology to enhance geotechnical infrastructure management within DOTD. The investigation involved a comprehensive analysis of available data within DOTD and other relevant Louisiana agencies. AN - dot:92408 ET - Final Report: March 2023 – March 2026 KW - Remote sensing KW - Laser radar KW - Drones KW - Geotechnical engineering KW - geotechnical infrastructures LA - English PB - Louisiana Transportation Research Center PY - 2026-06-01 SN - FHWA/LA.26/727 TI - LiDAR for Geotechnical Applications M3 - Tech Report N1 - United States N1 - DOTLT1000473 UR - https://rosap.ntl.bts.gov/view/dot/92408 ER -
Inland Port Feasibility Study: Final Report

The Tioga Group, Inc ...

2008-08-01 | PDF

This report evaluates inland port and rail shuttle concepts as potential strategies for reducing port-related truck vehicle miles traveled, congestion, and emissions in the Southern California Association of Governments region. Methodologically, the study defines inland port functions, reviews domestic and international examples, examines logistics ...

07/06/2026

Title : Inland Port Feasibility Study: Final Report Corporate Creator(s) : The Tioga Group, Inc;Railroad Industries, Inc;Iteris, Inc.; Corporate Contributor(s) : Southern California Association of Governments Published Date : 2008-08-01 Report Number : 06-023 URL : https://rosap.ntl.bts.gov/view/dot/92407 The Tioga Group, Inc (2008). Inland Port Feasibility Study: Final Report. The Tioga Group, Inc "Inland Port Feasibility Study: Final Report" (2008) The Tioga Group, Inc "Inland Port Feasibility Study: Final Report" , 2008 Export RIS Citation Information. TY - Tech Report A2 - The Tioga Group, Inc A2 - Railroad Industries, Inc A2 - Iteris, Inc. A3 - Southern California Association of Governments AB - This report evaluates inland port and rail shuttle concepts as potential strategies for reducing port-related truck vehicle miles traveled, congestion, and emissions in the Southern California Association of Governments region. Methodologically, the study defines inland port functions, reviews domestic and international examples, examines logistics park and satellite marine terminal models, analyzes container flows and rail-truck tradeoffs, incorporates stakeholder interviews and surveys, estimates costs and benefits, evaluates candidate terminal sites, and includes an extensive case-study review. AB - The report concludes that an inland port/rail shuttle serving the Inland Empire is technically feasible, but that its benefits would be limited by the continued need for local drayage, constrained rail capacity, high operating costs, scarce terminal sites, community opposition, and the absence of a clear institutional sponsor or permanent subsidy source. While the concept would reduce truck VMT overall, it would also increase local truck activity and truck VMT near the inland terminal. Sites near Mira Loma would generate the greatest near-term truck VMT reductions but also face the greatest implementation barriers. More distant locations such as Victorville, Barstow, and the Antelope Valley may offer longer-term potential as logistics markets develop. Overall, the report finds that while the inland port concept has intrinsic merit, near-term implementation is unlikely to be justified without stronger market demand, institutional support, rail capacity, and funding mechanisms. AN - dot:92407 KW - Railroads KW - Landside operations (Ports) KW - Shuttle service KW - Transportation operations KW - Railroad operations KW - Feasibility analysis LA - English PB - Southern California Association of Governments PY - 2008-08-01 SN - 06-023 TI - Inland Port Feasibility Study: Final Report M3 - Tech Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92407 ER -
FAA Center of Excellence for Alternative Jet Fuels & Environment: Annual Technical Report 2025: For the Period October 1, 2024 – September 30, 2025

United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment

2025-09-01 | PDF

This report covers the period October 1, 2024, through September 30, 2025. The Center was established by the authority of FAA solicitation 13-C-AJFE-Solicitation. The ASCENT website can be viewed at ascent.aero. The next meeting will be held during the months of April, May, and June 2025.

07/06/2026

Title : FAA Center of Excellence for Alternative Jet Fuels & Environment: Annual Technical Report 2025: For the Period October 1, 2024 – September 30, 2025 Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Published Date : 2025-09-01 URL : https://rosap.ntl.bts.gov/view/dot/92406 United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment (2025). FAA Center of Excellence for Alternative Jet Fuels & Environment: Annual Technical Report 2025: For the Period October 1, 2024 – September 30, 2025. United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment "FAA Center of Excellence for Alternative Jet Fuels & Environment: Annual Technical Report 2025: For the Period October 1, 2024 – September 30, 2025" (2025) United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment "FAA Center of Excellence for Alternative Jet Fuels & Environment: Annual Technical Report 2025: For the Period October 1, 2024 – September 30, 2025" , 2025 Export RIS Citation Information. TY - Tech Report A2 - 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 - This report covers the period October 1, 2024, through September 30, 2025. The Center was established by the authority of FAA solicitation 13-C-AJFE-Solicitation. The ASCENT website can be viewed at ascent.aero. The next meeting will be held during the months of April, May, and June 2025. AN - dot:92406 KW - Aircraft noise KW - Aircraft fuels KW - Annual reports KW - Aviation fuels KW - Pollutants KW - Supply chain management LA - English PB - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment PY - 2025-09-01 TI - FAA Center of Excellence for Alternative Jet Fuels & Environment: Annual Technical Report 2025: For the Period October 1, 2024 – September 30, 2025 M3 - Tech Report N1 - United States N1 - 13-C UR - https://rosap.ntl.bts.gov/view/dot/92406 ER -
Highway Taxes and Fees: How They Are Collected and Distributed, 1998

United States. Department of Transportation. Federal Highway Administration. Office of Highway Information Management

1999-01-01 | PDF

This publication presents tabular information on State and Federal laws that provide for the taxation of motor fuels, motor vehicles, motor carriers, and licensed drivers, and the distribution of these taxes and fees. Also included are tables that show the use of other State taxes for highways and the involvement of Federal agencies and Federal fun ...

07/06/2026

Title : Highway Taxes and Fees: How They Are Collected and Distributed, 1998 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Highway Information Management Published Date : 1999-01-01 URL : https://rosap.ntl.bts.gov/view/dot/92405 United States. Department of Transportation. Federal Highway Administration. Office of Highway Information Management (1999). Highway Taxes and Fees: How They Are Collected and Distributed, 1998. United States. Department of Transportation. Federal Highway Administration. Office of Highway Information Management "Highway Taxes and Fees: How They Are Collected and Distributed, 1998" (1999) United States. Department of Transportation. Federal Highway Administration. Office of Highway Information Management "Highway Taxes and Fees: How They Are Collected and Distributed, 1998" , 1999 Export RIS Citation Information. TY - Tech Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Highway Information Management AB - This publication presents tabular information on State and Federal laws that provide for the taxation of motor fuels, motor vehicles, motor carriers, and licensed drivers, and the distribution of these taxes and fees. Also included are tables that show the use of other State taxes for highways and the involvement of Federal agencies and Federal funds in highway activities. The information presented is based on data obtained from State authorities and the laws of the various States. AN - dot:92405 KW - Fuel taxes KW - Apportionment KW - Government funding KW - Highway planning KW - Highways KW - Financing KW - Highway user taxation KW - Motor fuels KW - State laws LA - English PB - United States. Federal Highway Administration. Office of Highway Information Management PY - 1999-01-01 TI - Highway Taxes and Fees: How They Are Collected and Distributed, 1998 M3 - Tech Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/92405 ER -
Using Electric Vehicle Onboard Data for Pavement Quality Assessment and Management

Stern, Raphael

;

Nouhi, Shaghayegh

2026-01-01 | PDF

This project investigated the feasibility of using electric vehicle onboard diagnostics (OBD-II) data for pavement quality assessment in Minnesota, inspired by Denmark's Live Road Assessment (LiRA) project. The research addressed the critical need for cost-effective, continuous pavement monitoring to supplement expensive instrumented vehicle survey ...

07/06/2026

Title : Using Electric Vehicle Onboard Data for Pavement Quality Assessment and Management Creator(s) : Stern, Raphael;Nouhi, Shaghayegh;Turos, Mugurel;He, Qizhi;Lin, Zihan;Marasteanu, Mihai; Corporate Creator(s) : University of Minnesota. Department of Civil, Environmental, and Geo-Engineering. Minnesota Traffic Observatory Corporate Contributor(s) : Minnesota. Department of Transportation. Office of Research & Innovation Published Date : 2026-01-01 Report Number : MN 2026-05 URL : https://rosap.ntl.bts.gov/view/dot/92404 Stern, Raphael et al. (2026). Using Electric Vehicle Onboard Data for Pavement Quality Assessment and Management. Stern, Raphael et al. "Using Electric Vehicle Onboard Data for Pavement Quality Assessment and Management" (2026) Stern, Raphael et al. "Using Electric Vehicle Onboard Data for Pavement Quality Assessment and Management" , 2026 Export RIS Citation Information. TY - Tech Report AU - Stern, Raphael AU - Nouhi, Shaghayegh AU - Turos, Mugurel AU - He, Qizhi AU - Lin, Zihan AU - Marasteanu, Mihai A2 - University of Minnesota. Department of Civil, Environmental, and Geo-Engineering. Minnesota Traffic Observatory A3 - Minnesota. Department of Transportation. Office of Research & Innovation AB - This project investigated the feasibility of using electric vehicle onboard diagnostics (OBD-II) data for pavement quality assessment in Minnesota, inspired by Denmark's Live Road Assessment (LiRA) project. The research addressed the critical need for cost-effective, continuous pavement monitoring to supplement expensive instrumented vehicle surveys traditionally used by the Minnesota Department of Transportation (MnDOT). The methodology involved a comprehensive OBD-II scanner evaluation, selecting the OBDLink LX device for its superior compatibility with electric vehicles and ability to collect 694 Parameter IDs (PIDs). Data collection occurred across three test routes: MN-36 loop, Metro to Northfield loop, and MnROAD facility, generating around 10,000 data points synchronized with MnDOT's high-precision Pathways van measurements. The LiRA software framework was adapted through systematic data preprocessing, feature engineering using Sequential Feature Selection, and machine learning model development. Results demonstrated that hybrid Convolutional Neural Network-Long Short-Term Memory (CNN-LSTM) models achieved the best performance when using speed combined with vehicle orientation and acceleration features, yielding root mean square error (RMSE) values of 0.172 compared to MnDOT reference data. The methodology showed correlation with both MnDOT measurements and NIRA Dynamics network-level data across diverse road conditions, though performance varied based on environmental factors and data collection conditions. Implementation guidelines were developed for large-scale deployment, including equipment standardization protocols, data-processing pipelines, and risk-mitigation strategies. The research indicates that vehicle sensor data can provide useful pavement condition information for continuous infrastructure monitoring with reduced incremental cost. This approach shows potential for supplementing traditional pavement management systems, though successful implementation requires careful consideration of multiple operational factors and validation protocols to ensure reliable performance across varying conditions. AN - dot:92404 ET - Final Report KW - Pavement condition KW - Quality assurance KW - Electric vehicles KW - Automatic data collection systems KW - Machine learning KW - Roughness KW - Monitoring LA - English PB - Minnesota. Department of Transportation. Office of Research & Innovation PY - 2026-01-01 SN - MN 2026-05 TI - Using Electric Vehicle Onboard Data for Pavement Quality Assessment and Management M3 - Tech Report N1 - United States N1 - (c)1036342 (wo) 93 UR - https://rosap.ntl.bts.gov/view/dot/92404 ER -
National Accessibility Evaluation: Phase II

Lind, Eric M. ;

Owen, Andrew

2026-02-01 | PDF

This project implements activities for the National Accessibility Evaluation (NAE) pooled-fund study, performing accessibility evaluations describing conditions in 2020, 2021, 2022, 2023, and 2024. The National Accessibility Evaluation creates national census block-level accessibility datasets that can be used by partners in local transportation sy ...

07/06/2026

Title : National Accessibility Evaluation: Phase II Creator(s) : Lind, Eric M.;Owen, Andrew;Liu, Shirley Shiqin; Corporate Creator(s) : University of Minnesota. Center for Transportation Studies Corporate Contributor(s) : Minnesota. Department of Transportation. Office of Research & Innovation Published Date : 2026-02-01 Report Number : 2026-14 URL : https://rosap.ntl.bts.gov/view/dot/92403 Lind, Eric M. et al. (2026). National Accessibility Evaluation: Phase II. Lind, Eric M. and Owen, Andrew and Liu, Shirley Shiqin "National Accessibility Evaluation: Phase II" (2026) Lind, Eric M. et al. "National Accessibility Evaluation: Phase II" , 2026 Export RIS Citation Information. TY - Tech Report AU - Lind, Eric M. AU - Owen, Andrew AU - Liu, Shirley Shiqin A2 - University of Minnesota. Center for Transportation Studies A3 - Minnesota. Department of Transportation. Office of Research & Innovation AB - This project implements activities for the National Accessibility Evaluation (NAE) pooled-fund study, performing accessibility evaluations describing conditions in 2020, 2021, 2022, 2023, and 2024. The National Accessibility Evaluation creates national census block-level accessibility datasets that can be used by partners in local transportation system evaluation, performance management, planning, and research efforts. The project produced a series of annual reports describing accessibility to jobs by driving, biking, walking, and by transit in metropolitan areas across America. Accessibility calculations rely on detailed travel-time calculations for both driving and transit, using commercially available, GPS-based speed measurements and published transit schedules. Each NAE partner received digital access to the accessibility datasets covering their jurisdictions. These datasets quantify access to jobs, health care, schools, grocery stores, and other essential destinations. The annual Access Across America reports provide summaries of the detailed job accessibility datasets for the 50 most populous metropolitan areas across America. These reports were released to national and local media outlets and supported by publicity and communications efforts. AN - dot:92403 ET - Final Report KW - Accessibility KW - Transportation KW - Land use KW - Jobs KW - Travel time KW - Datasets KW - Metropolitan areas KW - Statistical trends LA - English PB - Minnesota. Department of Transportation. Office of Research & Innovation PY - 2026-02-01 SN - 2026-14 TI - National Accessibility Evaluation: Phase II M3 - Tech Report N1 - United States N1 - (C) 1036342 (wo) 6 UR - https://rosap.ntl.bts.gov/view/dot/92403 ER -
Web-Based Tool to Advance Geotechnical Data Interchange and Reliability-Based Site Characterization [Technical Summary]

Gautreau, Gavin P.

2026-01-01 | PDF

This project expanded upon a prototype interface initially developed for large, data-rich projects and produced a functional tool that DOTD can use on any digital project within the Department. The new tool, named GDX-plorer, builds upon DOTD’s ongoing efforts to modernize geotechnical data management and support the adoption of advanced techniques ...

07/06/2026

Title : Web-Based Tool to Advance Geotechnical Data Interchange and Reliability-Based Site Characterization [Technical Summary] Creator(s) : Gautreau, Gavin P. Corporate Creator(s) : Louisiana Transportation Research Center Corporate Contributor(s) : Louisiana Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-01-01 Report Number : DOTLT1000517;24-2GT; URL : https://rosap.ntl.bts.gov/view/dot/92402 Gautreau, Gavin P. (2026). Web-Based Tool to Advance Geotechnical Data Interchange and Reliability-Based Site Characterization [Technical Summary]. Gautreau, Gavin P. "Web-Based Tool to Advance Geotechnical Data Interchange and Reliability-Based Site Characterization [Technical Summary]" (2026) Gautreau, Gavin P. "Web-Based Tool to Advance Geotechnical Data Interchange and Reliability-Based Site Characterization [Technical Summary]" , 2026 Export RIS Citation Information. TY - Brief AU - Gautreau, Gavin P. A2 - Louisiana Transportation Research Center A3 - Louisiana Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - This project expanded upon a prototype interface initially developed for large, data-rich projects and produced a functional tool that DOTD can use on any digital project within the Department. The new tool, named GDX-plorer, builds upon DOTD’s ongoing efforts to modernize geotechnical data management and support the adoption of advanced techniques recommended through the FHWA A-GaME program. The software provides several benefits to DOTD. AN - dot:92402 ET - Technical Summary KW - Spatial analysis KW - Geotechnical engineering KW - Boreholes KW - Bridge construction KW - Bridge design KW - Data management KW - Data quality KW - Highway design KW - Road construction KW - Visualization LA - English PB - Louisiana Transportation Research Center PY - 2026-01-01 SN - DOTLT1000517 TI - Web-Based Tool to Advance Geotechnical Data Interchange and Reliability-Based Site Characterization [Technical Summary] M3 - Brief N1 - United States N1 - SPR: TT-Fed/TT-Reg - 5 UR - https://rosap.ntl.bts.gov/view/dot/92402 ER -
Project 071 Predictive Simulation of nvPM Emissions in Aircraft Combustors

Menon, Suresh ;

Karpe, Shubham Basavaraj

2025-09-30 | PDF

This project aimed to establish a new multiscale framework for predicting soot formation in both canonical and practically relevant sooting flames. A hierarchy of first-principles simulation methods was employed to capture the multiscale physics governing the formation and transport of non-volatile particulate matter (nvPM, commonly referred to as ...

07/06/2026

Title : Project 071 Predictive Simulation of nvPM Emissions in Aircraft Combustors Creator(s) : Menon, Suresh;Karpe, Shubham Basavaraj;Yazdani, Miad;Zeppieri, Steve;Colket, Meredith; 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 : 2025-09-30 URL : https://rosap.ntl.bts.gov/view/dot/92401 Menon, Suresh et al. (2025). Project 071 Predictive Simulation of nvPM Emissions in Aircraft Combustors. Menon, Suresh et al. "Project 071 Predictive Simulation of nvPM Emissions in Aircraft Combustors" (2025) Menon, Suresh et al. "Project 071 Predictive Simulation of nvPM Emissions in Aircraft Combustors" , 2025 Export RIS Citation Information. TY - Tech Report AU - Menon, Suresh AU - Karpe, Shubham Basavaraj AU - Yazdani, Miad AU - Zeppieri, Steve AU - Colket, Meredith A2 - Georgia Institute of Technology A3 - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment AB - This project aimed to establish a new multiscale framework for predicting soot formation in both canonical and practically relevant sooting flames. A hierarchy of first-principles simulation methods was employed to capture the multiscale physics governing the formation and transport of non-volatile particulate matter (nvPM, commonly referred to as soot). The work specifically targeted several empirical elements that traditionally limit soot modeling fidelity, for example, uncertainties in particle inception models, the roles of key precursor species in nucleation, assumptions regarding particle morphology and their effects on surface growth, sensitivities to particle size distribution, and the use of ad hoc coagulation and coalescence formulations. To address these challenges, the state-of-the-art modeling tools are developed and a systematic coupling of these tools in a multiscale, multi-physics manner is established. Hence, this approach provides insights into establishing new predictive abilities by integrating these capabilities. The final objective of this work demonstrated the capabilities of this approach to modeling the soot physics in realistic gas turbine combustor for which the experiments are being conducted under Federal Aviation Administration (FAA) ASCENT Project 070. AN - dot:92401 KW - Combustion KW - Aviation fuels KW - Eddy currents KW - Monte Carlo method KW - Climate KW - ASCENT LA - English PB - United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment PY - 2025-09-30 TI - Project 071 Predictive Simulation of nvPM Emissions in Aircraft Combustors M3 - Tech Report N1 - United States N1 - 13-C-AJFE-GIT-067 UR - https://rosap.ntl.bts.gov/view/dot/92401 ER -

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