The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations.
Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.
This report focuses on collecting and analyzing external and internal noise levels generated by the modified transverse rumble strips on US-41 that were reconstructed in October 2022. The goal is to enable a comparison with noise levels generated by the previous rumble strips that were constructed in the same location in 2019. This work is organize
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El-Rayes, K., Ignacio, E. J., Hajj, R., Sallam, O., & Al-Ghzawi, M. (2023). Noise Measurements of US-41 Transverse Rumble Strips (Report No. FHWA-ICT-23-003). Illinois Center for Transportation. https://doi.org/10.36501/0197-9191/23-004
El-Rayes, Khaled, Ernest-John Ignacio, Ramez Hajj, Omar Sallam, and Mamdouh Al-Ghzawi. Noise Measurements of US-41 Transverse Rumble Strips. Report no. FHWA-ICT-23-003. Illinois Center for Transportation, 2023. https://doi.org/10.36501/0197-9191/23-004.
El-Rayes, Khaled, et al. Noise Measurements of US-41 Transverse Rumble Strips. Illinois Center for Transportation, 2023, Report no. FHWA-ICT-23-003, ROSA P. https://doi.org/10.36501/0197-9191/23-004.
The time individual engineers, administrators and their staff invest in researching drainage law and defining the best approach to solving drainage issues can be considerable. This document provides quick access to information needed to solve those problems and discover legal solutions to recurring drainage issues and the time saved could be invest
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Arvidson, T. (2023). Drainage 101 County Roadways, City Street and Drainageways: Best Practices and Resource Guide (Report No. 2023RIC08). Minnesota. Department of Transportation. Local Road Research Board. https://rosap.ntl.bts.gov/view/dot/67887
Arvidson, Tim. Drainage 101 County Roadways, City Street and Drainageways: Best Practices and Resource Guide. Report no. 2023RIC08. Minnesota. Department of Transportation. Local Road Research Board, 2023. https://rosap.ntl.bts.gov/view/dot/67887.
Arvidson, Tim Drainage 101 County Roadways, City Street and Drainageways: Best Practices and Resource Guide. Minnesota. Department of Transportation. Local Road Research Board, 2023, Report no. 2023RIC08, ROSA P. https://rosap.ntl.bts.gov/view/dot/67887.
Researchers have determined that a significant number of pedestrian and bicycle crashes arise from intoxicated non-motorists (Hutchinson, Kloeden, and Lindsay, 2010). While driver and non-motorized fatalities have decreased significantly over several decades, the extent of alcohol involvement has declined significantly only among fatally injured dr
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Burbidge, S. K., Singleton, P. A., Azra, N., & Subedi, A. (2023). Impaired Active Transportation Users (Report No. UT-22.22). Utah. Dept. of Transportation. Research Division. https://rosap.ntl.bts.gov/view/dot/68823
Burbidge, Shaunna K., Patrick A. Singleton, Nuzhat Azra, and Atul Subedi. Impaired Active Transportation Users. Report no. UT-22.22. Utah. Dept. of Transportation. Research Division, 2023. https://rosap.ntl.bts.gov/view/dot/68823.
Burbidge, Shaunna K., et al. Impaired Active Transportation Users. Utah. Dept. of Transportation. Research Division, 2023, Report no. UT-22.22, ROSA P. https://rosap.ntl.bts.gov/view/dot/68823.
The Grand Forks East Grand Forks MPO's (The Forks MPO) Travel Demand Model (TDM) is updated every five years to reflect new ground truths/data and the advancements in the state-of-the-art in transportation modeling techniques and methods. The current update reflects the base year 2021 data. The model is a four-step TDM including trip generations, t
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Motuba, D., Habib, M. F., & Rahman, B. (2023). Grand Forks East Grand Forks 2021 Travel Demand Model Update: Executive Summary. Upper Great Plains Transportation Institute. https://rosap.ntl.bts.gov/view/dot/78921
Motuba, Diomo, Muhammad Faisal Habib, and Baishali Rahman. Grand Forks East Grand Forks 2021 Travel Demand Model Update: Executive Summary. Upper Great Plains Transportation Institute, 2023. https://rosap.ntl.bts.gov/view/dot/78921.
Motuba, Diomo, et al. Grand Forks East Grand Forks 2021 Travel Demand Model Update: Executive Summary. Upper Great Plains Transportation Institute, 2023, ROSA P. https://rosap.ntl.bts.gov/view/dot/78921.
Drilled shafts are reinforced concrete deep foundation elements that typically range in diameter from 3 to 15 feet. Within the past 20 years, drilled shaft installation plans for FDOT projects have gone from requiring no mass concrete information (regardless of shaft diameter) to requiring steps to control temperature for shafts greater than 6 feet
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Mullins, G., Lewis, A., Mee, T., & Vomacka, J. (2023). Peak Temperature Determination of Drilled Shafts Excluded From Mass Concrete Consideration in Current Specifications. Florida Department of Transportation. https://rosap.ntl.bts.gov/view/dot/76696
Mullins, Gray, Amanda Lewis, Tristen Mee, and Jeffrey Vomacka. Peak Temperature Determination of Drilled Shafts Excluded From Mass Concrete Consideration in Current Specifications. Florida Department of Transportation, 2023. https://rosap.ntl.bts.gov/view/dot/76696.
Mullins, Gray, et al. Peak Temperature Determination of Drilled Shafts Excluded From Mass Concrete Consideration in Current Specifications. Florida Department of Transportation, 2023, ROSA P. https://rosap.ntl.bts.gov/view/dot/76696.
MnDOT’s Advancing Transportation Equity Initiative focuses on ensuring the transportation network, services and decision- making meet the needs of Minnesota’s underserved or underrepresented communities. Understanding the needs, challenges and overall experiences of these communities is crucial to advancing an equitable transportation system. Publi
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Song, Y. (2023). The Role of Gender and Identity in Travel Behavior (Report No. 2023-10TS). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/67842
Song, Ying. The Role of Gender and Identity in Travel Behavior. Report no. 2023-10TS. Minnesota. Department of Transportation. Office of Research & Innovation, 2023. https://rosap.ntl.bts.gov/view/dot/67842.
Song, Ying The Role of Gender and Identity in Travel Behavior. Minnesota. Department of Transportation. Office of Research & Innovation, 2023, Report no. 2023-10TS, ROSA P. https://rosap.ntl.bts.gov/view/dot/67842.
Pedestrian deaths are at a 30-year high nationally—a trend that is mirrored in Minnesota. Previous research in Saint Paul found that driver yielding significantly increased at unsignalized crosswalks following a multifaceted approach that included the installation of signage and other low-cost engineering solutions combined with enforcement through
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Dallman, A., & Morris, N. (2023). Improving Driver Yielding to Pedestrians at Intersections [Summary] (Report No. 2023-11TS). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/72534
Dallman, Amber and Nichole Morris. Improving Driver Yielding to Pedestrians at Intersections [Summary]. Report no. 2023-11TS. Minnesota. Department of Transportation. Office of Research & Innovation, 2023. https://rosap.ntl.bts.gov/view/dot/72534.
Dallman, Amber, and Nichole Morris Improving Driver Yielding to Pedestrians at Intersections [Summary]. Minnesota. Department of Transportation. Office of Research & Innovation, 2023, Report no. 2023-11TS, ROSA P. https://rosap.ntl.bts.gov/view/dot/72534.
This report presents preliminary findings from the American Micromobility Panel, the largest study of shared micromobility services in the United States incorporating riders from multiple major operators. Micromobility services (bike-share and scooter-share) have recently emerged in many U.S. cities. Given that the substitution of bicycling, scooti
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Fitch-Polse, D. T., Mohiuddin, H., Fukushige, T., Darr, J., & Agarwal, S. (2023). American Micromobility Panel: Part 1 (Report No. NCST-UCD-RR-23-16). University of California, Davis. Institute of Transportation Studies. https://doi.org/10.7922/G2F47MG3
Fitch-Polse, Dillon Taylor, Hossain Mohiuddin, Tatsuya Fukushige, Justin Darr, and Swati Agarwal. American Micromobility Panel: Part 1. Report no. NCST-UCD-RR-23-16. University of California, Davis. Institute of Transportation Studies, 2023. https://doi.org/10.7922/G2F47MG3.
Fitch-Polse, Dillon Taylor, et al. American Micromobility Panel: Part 1. University of California, Davis. Institute of Transportation Studies, 2023, Report no. NCST-UCD-RR-23-16, ROSA P. https://doi.org/10.7922/G2F47MG3.
Due to their increased efficiency and brightness, Light Emitting Diodes (LEDs) are now the first choice in outdoor lighting projects. Unlike High-Pressure Sodium lamps, which produce longer wavelengths and yellow-to-orange light, and Low-Pressure Sodium lamps, which produce near monochromatic yellow light, LEDs are usually full-spectrum white light
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Longcore, T. (2023). Effects of LED Lighting on Terrestrial Wildlife. California. Department of Transportation. Department of Research, Innovation and System Information. https://rosap.ntl.bts.gov/view/dot/77718
Longcore, Travis. Effects of LED Lighting on Terrestrial Wildlife. California. Department of Transportation. Department of Research, Innovation and System Information, 2023. https://rosap.ntl.bts.gov/view/dot/77718.
Longcore, Travis Effects of LED Lighting on Terrestrial Wildlife. California. Department of Transportation. Department of Research, Innovation and System Information, 2023, ROSA P. https://rosap.ntl.bts.gov/view/dot/77718.
This study introduces imaging technology to determine the bulk specific gravity (Gmb) of compacted asphalt mixture specimens. Using an advanced three-dimensional scanner, a fast, accurate technique for determining compacted asphalt mixture specimen Gmb was developed. The feasibility of this technique was evaluated by testing a collection of asphalt
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Notani, M. A., Jahangiri, B., Rastegar, R. R., & Haddock, J. E. (2023). Determining Asphalt Mixture Properties Using Imaging Techniques (Report No. FHWA/IN/JTRP-2023/12). Purdue University. Joint Transportation Research Program. https://doi.org/10.5703/1288284317635
Notani, Mohammad Ali, Behnam Jahangiri, Reyhaneh Rahbar Rastegar, and John E. Haddock. Determining Asphalt Mixture Properties Using Imaging Techniques. Report no. FHWA/IN/JTRP-2023/12. Purdue University. Joint Transportation Research Program, 2023. https://doi.org/10.5703/1288284317635.
Notani, Mohammad Ali, et al. Determining Asphalt Mixture Properties Using Imaging Techniques. Purdue University. Joint Transportation Research Program, 2023, Report no. FHWA/IN/JTRP-2023/12, ROSA P. https://doi.org/10.5703/1288284317635.
This study’s research team conducted a comprehensive statistical analysis to help transit agencies better understand factors that may have contributed to transit ridership loss and the extent of its impacts. Building off ICT-IDOT project R27-SP45, they developed a series of statistical models for the Chicago Transit Authority’s rail and bus systems
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Liu, Y., Osorio, J. J., & Ouyang, Y. (2023). Quantifying Impacts of the COVID-19 Pandemic on Ridership of CTA Rail and Bus Systems in Chicago (Report No. FHWA-ICT-23-001). Illinois Center for Transportation. https://doi.org/10.36501/0197-9191/23-002
Liu, Yining, Jesus J. Osorio, and Yanfeng Ouyang. Quantifying Impacts of the COVID-19 Pandemic on Ridership of CTA Rail and Bus Systems in Chicago. Report no. FHWA-ICT-23-001. Illinois Center for Transportation, 2023. https://doi.org/10.36501/0197-9191/23-002.
Liu, Yining, et al. Quantifying Impacts of the COVID-19 Pandemic on Ridership of CTA Rail and Bus Systems in Chicago. Illinois Center for Transportation, 2023, Report no. FHWA-ICT-23-001, ROSA P. https://doi.org/10.36501/0197-9191/23-002.
With more people experiencing homelessness in California cities, some transit agencies have begun to comprehensively address the needs of people experiencing homelessness, a population which historically may not have been included in their planning. Research suggests that people experiencing homelessness rely on public transit for the same variety
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Nations, J., Fu, Y., & Rabinowitz-Bussell, M. (2023). How Regional Transit Agencies Can Serve the Daily Mobility Needs of the Unhoused Population (Report No. UC-ITS-2022-52). University of California Institute of Transportation Studies. https://doi.org/10.7922/G2G15Z65
Nations, Jennifer, Yao Fu, and Mirle Rabinowitz-Bussell. How Regional Transit Agencies Can Serve the Daily Mobility Needs of the Unhoused Population. Report no. UC-ITS-2022-52. University of California Institute of Transportation Studies, 2023. https://doi.org/10.7922/G2G15Z65.
Nations, Jennifer, et al. How Regional Transit Agencies Can Serve the Daily Mobility Needs of the Unhoused Population. University of California Institute of Transportation Studies, 2023, Report no. UC-ITS-2022-52, ROSA P. https://doi.org/10.7922/G2G15Z65.
This technical report provides an overview of motor vehicle traffic crashes in 2021. There were 42,939 people killed in motor vehicle traffic crashes on U.S. roadways during 2021, a 10-percent increase from 39,007 fatalities in 2020, or 3,932 more people killed in traffic crashes in 2021. The estimated number of people injured on our roadways incre
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Stewart, T. (2023). Overview of Motor Vehicle Traffic Crashes in 2021 (Report No. DOT HS 813 435). United States. Department of Transportation. National Highway Traffic Safety Administration. https://rosap.ntl.bts.gov/view/dot/78769
Stewart, Timothy. Overview of Motor Vehicle Traffic Crashes in 2021. Report no. DOT HS 813 435. United States. Department of Transportation. National Highway Traffic Safety Administration, 2023. https://rosap.ntl.bts.gov/view/dot/78769.
Stewart, Timothy Overview of Motor Vehicle Traffic Crashes in 2021. United States. Department of Transportation. National Highway Traffic Safety Administration, 2023, Report no. DOT HS 813 435, ROSA P. https://rosap.ntl.bts.gov/view/dot/78769.
To be able to develop this plan with a capability of providing a level of planning and forecasting guidance, it is necessary to identify the type and value of waterborne commerce, thereby providing the focus for the analysis and documentation of the impact and importance of waterborne commerce on the state of Louisiana, its transportation system, a
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Cruz, R., & Mitran, E. (2023). The Future of the Louisiana Waterways Transport System: A System Analysis and Plan to Move Commerce by Water [Tech Summary] (Report No. LTRC Project No. 20-1SS). Louisiana Transportation Research Center. https://rosap.ntl.bts.gov/view/dot/67345
Cruz, Ricardo and Elisabeta Mitran. The Future of the Louisiana Waterways Transport System: A System Analysis and Plan to Move Commerce by Water [Tech Summary]. Report no. LTRC Project No. 20-1SS. Louisiana Transportation Research Center, 2023. https://rosap.ntl.bts.gov/view/dot/67345.
Cruz, Ricardo, and Elisabeta Mitran The Future of the Louisiana Waterways Transport System: A System Analysis and Plan to Move Commerce by Water [Tech Summary]. Louisiana Transportation Research Center, 2023, Report no. LTRC Project No. 20-1SS, ROSA P. https://rosap.ntl.bts.gov/view/dot/67345.
This study assessed the short-term functional (surface) characteristics of pavements constructed using dense-graded asphalt surface mixtures designed with the balanced mix design (BMD) methodology as compared to counterpart mixtures designed using the existing design methodology (Superpave). Another objective of this study was to establish a functi
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Boz, I., Flintsch, G. W., & de León Izeppi, E. (2023). Functional Characteristics of Dense-Graded Asphalt Surface Mixtures (Report No. FHWA/VTRC 23-R15). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/67231
Boz, Ilker, Gerardo W Flintsch, and Edgar de León Izeppi. Functional Characteristics of Dense-Graded Asphalt Surface Mixtures. Report no. FHWA/VTRC 23-R15. Virginia Transportation Research Council (VTRC), 2023. https://rosap.ntl.bts.gov/view/dot/67231.
Boz, Ilker, et al. Functional Characteristics of Dense-Graded Asphalt Surface Mixtures. Virginia Transportation Research Council (VTRC), 2023, Report no. FHWA/VTRC 23-R15, ROSA P. https://rosap.ntl.bts.gov/view/dot/67231.
As a low-cost countermeasure to rural intersection crashes, transverse rumble strips (TRS) provide an audible and tactile warning to drivers approaching an intersection with the primary goal of decreasing crashes that result from running a stop sign. The objective of this project is to evaluate the effectiveness of different TRS patterns on stoppin
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Hallmark, S., Oneyear, N., Veneziano, D., & Naraghi, H. (2023). Transverse Rumble Strips at Rural Intersections (Report No. MN 2023-17). Minnesota. Department of Transportation. Local Road Research Board. https://rosap.ntl.bts.gov/view/dot/67875
Hallmark, Shauna, Nicole Oneyear, David Veneziano, and Hossein Naraghi. Transverse Rumble Strips at Rural Intersections. Report no. MN 2023-17. Minnesota. Department of Transportation. Local Road Research Board, 2023. https://rosap.ntl.bts.gov/view/dot/67875.
Hallmark, Shauna, et al. Transverse Rumble Strips at Rural Intersections. Minnesota. Department of Transportation. Local Road Research Board, 2023, Report no. MN 2023-17, ROSA P. https://rosap.ntl.bts.gov/view/dot/67875.
California and its regional and local governments have invested heavily in public transit over the past half-century to provide an alternative to driving, ease traffic congestion, reduce emissions, slow climate change, steer new development, and provide mobility for those without. As a result, bus service has improved and expanded, and many parts o
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Wasserman, J. L., Gahbauer, J., Siddiq, F., King, H., Ding, H., & Taylor, B. D. (2023). Financing the Future: Examining the Fiscal Landscape of California Public Transit in the Wake of the Pandemic (Report No. UC-ITS-2022-15). University of California, Los Angeles. Institute of Transportation Studies. https://rosap.ntl.bts.gov/view/dot/67067
Wasserman, Jacob L., John Gahbauer, Fariba Siddiq, Hannah King, Hao Ding, and Brian D. Taylor. Financing the Future: Examining the Fiscal Landscape of California Public Transit in the Wake of the Pandemic. Report no. UC-ITS-2022-15. University of California, Los Angeles. Institute of Transportation Studies, 2023. https://rosap.ntl.bts.gov/view/dot/67067.
Wasserman, Jacob L., et al. Financing the Future: Examining the Fiscal Landscape of California Public Transit in the Wake of the Pandemic. University of California, Los Angeles. Institute of Transportation Studies, 2023, Report no. UC-ITS-2022-15, ROSA P. https://rosap.ntl.bts.gov/view/dot/67067.
We present results from a field campaign to measure seasonal snow depth at Cameron Pass, Colorado, using a synthetic ultrawideband software-defined radar (SDRadar) implemented in commercially available Universal Software Radio Peripheral (USRP) software-defined radio hardware and flown on a small hexacopter unmanned aerial vehicle (UAV). We coheren
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Prager, S., Sexstone, G., McGrath, D., Fulton, J., & Moghaddam, M. (2023). Snow Depth Retrieval with an Autonomous UAV-Mounted Software-Defined Radar (Report No. CDOT-2023-03). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/80070
Prager, Samuel, Graham Sexstone, Daniel McGrath, John Fulton, and Mahta Moghaddam. Snow Depth Retrieval with an Autonomous UAV-Mounted Software-Defined Radar. Report no. CDOT-2023-03. Colorado Department of Transportation. Applied Research & Innovations Branch, 2023. https://rosap.ntl.bts.gov/view/dot/80070.
Prager, Samuel, et al. Snow Depth Retrieval with an Autonomous UAV-Mounted Software-Defined Radar. Colorado Department of Transportation. Applied Research & Innovations Branch, 2023, Report no. CDOT-2023-03, ROSA P. https://rosap.ntl.bts.gov/view/dot/80070.
Moving commerce by water represents 25 percent of all goods movements within the state of Louisiana and is a critical component of the multimodal transportation system in the state [1]. To be best positioned for future development and investment, the Louisiana Department of Transportation and Development's (DOTD) Office of Multimodal Commerce (OMC)
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Cruz, R., Hird, J., & Barnes, S. R. (2023). The Future of the Louisiana Waterways Transport System: A System Analysis and Plan to Move Commerce by Water (Report No. FHWA/LA.22/672). Louisiana. Dept. of Transportation and Development. https://rosap.ntl.bts.gov/view/dot/67338
Cruz, Ricardo, Jonathan Hird, and Stephen R Barnes. The Future of the Louisiana Waterways Transport System: A System Analysis and Plan to Move Commerce by Water. Report no. FHWA/LA.22/672. Louisiana. Dept. of Transportation and Development, 2023. https://rosap.ntl.bts.gov/view/dot/67338.
Cruz, Ricardo, et al. The Future of the Louisiana Waterways Transport System: A System Analysis and Plan to Move Commerce by Water. Louisiana. Dept. of Transportation and Development, 2023, Report no. FHWA/LA.22/672, ROSA P. https://rosap.ntl.bts.gov/view/dot/67338.
The most recently published update of the Virginia Department of Transportation’s (VDOT’s) historic bridge management plan, A Management Plan for Historic Bridges in Virginia: The 2017 Update, noted a number of special considerations regarding stone masonry on VDOT’s historic bridges (i.e., those state-owned bridges that are individually eligible f
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Miller, A. B. (2023). Best Practices for Historic Masonry Repair and Rehabilitation (Report No. VTRC 23-R10). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/67140
Miller, Ann B.. Best Practices for Historic Masonry Repair and Rehabilitation. Report no. VTRC 23-R10. Virginia Transportation Research Council (VTRC), 2023. https://rosap.ntl.bts.gov/view/dot/67140.
Miller, Ann B. Best Practices for Historic Masonry Repair and Rehabilitation. Virginia Transportation Research Council (VTRC), 2023, Report no. VTRC 23-R10, ROSA P. https://rosap.ntl.bts.gov/view/dot/67140.
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