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.
One critical aspect of a proactive approach to improving the safety of commercial motor vehicles (CMVs) involves how to communicate with CMV drivers safely and effectively through an electronic notification system (ENS). The objectives of this project are to: 1) conduct a review of existing ENS methods in use by CMV drivers, trucking companies, and
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Edara, P. (2024). Effective Methods to Safely Communicate with Commercial Motor Vehicles [Summary]. Missouri. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/80147
Edara, Praveen. Effective Methods to Safely Communicate with Commercial Motor Vehicles [Summary]. Missouri. Department of Transportation, 2024. https://rosap.ntl.bts.gov/view/dot/80147.
Edara, Praveen Effective Methods to Safely Communicate with Commercial Motor Vehicles [Summary]. Missouri. Department of Transportation, 2024, ROSA P. https://rosap.ntl.bts.gov/view/dot/80147.
This study presents the development and validation of a web-based platform designed for the visualization, sharing, and processing of large-scale LiDAR point cloud data tailored to the operational needs of MassDOT. Leveraging open-source technologies, particularly Potree, the platform addresses key challenges associated with the management of high-
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Remache-Patino, B., Gerasimidis, S., & Ai, C. (2024). Development of a Visualization, Sharing, and Processing Platform for Large-Scale Highway Point Cloud Data (Report No. 25-068). Massachusetts. Office of Transportation Planning. https://rosap.ntl.bts.gov/view/dot/86814
Remache-Patino, Bryan, Simos Gerasimidis, and Chengbo Ai. Development of a Visualization, Sharing, and Processing Platform for Large-Scale Highway Point Cloud Data. Report no. 25-068. Massachusetts. Office of Transportation Planning, 2024. https://rosap.ntl.bts.gov/view/dot/86814.
Remache-Patino, Bryan, et al. Development of a Visualization, Sharing, and Processing Platform for Large-Scale Highway Point Cloud Data. Massachusetts. Office of Transportation Planning, 2024, Report no. 25-068, ROSA P. https://rosap.ntl.bts.gov/view/dot/86814.
The accumulation of sediments at culverts is a chronic operational issue, frequently occurring at multi-barrel culverts located in erosion-prone watersheds. Sediment deposits can develop rapidly, impairing the culvert’s capacity to convey design flows and potentially leading to damage to both transportation infrastructure (e.g., road and culvert ov
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Muste, M. (2024). Design Guidelines and Mitigation Strategies for Reducing Sedimentation of Multi-Barrel Culverts [Brief]. Iowa Department of Transportation. https://rosap.ntl.bts.gov/view/dot/80878
Muste, Marian. Design Guidelines and Mitigation Strategies for Reducing Sedimentation of Multi-Barrel Culverts [Brief]. Iowa Department of Transportation, 2024. https://rosap.ntl.bts.gov/view/dot/80878.
Muste, Marian Design Guidelines and Mitigation Strategies for Reducing Sedimentation of Multi-Barrel Culverts [Brief]. Iowa Department of Transportation, 2024, ROSA P. https://rosap.ntl.bts.gov/view/dot/80878.
The TITAN project, now in its second phase, is a cutting-edge, interactive web-based framework designed for the warehousing, integration, analytics, and visualization of transportation data. This phase has successfully implemented resilient and scalable database architectures, enabling rapid storage and retrieval of massive datasets, which are crit
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Adu-Gyamfi, Y. (2024). TITAN – An Interactive, Web-based Framework for Transportation Data Integration and Analytics – Phase 2 [Summary] (Report No. TR202107). Missouri. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/80359
Adu-Gyamfi, Yaw. TITAN – An Interactive, Web-based Framework for Transportation Data Integration and Analytics – Phase 2 [Summary]. Report no. TR202107. Missouri. Department of Transportation, 2024. https://rosap.ntl.bts.gov/view/dot/80359.
Adu-Gyamfi, Yaw TITAN – An Interactive, Web-based Framework for Transportation Data Integration and Analytics – Phase 2 [Summary]. Missouri. Department of Transportation, 2024, Report no. TR202107, ROSA P. https://rosap.ntl.bts.gov/view/dot/80359.
As online shopping nears its third decade, it is clear that its impacts on urban goods flow are profound. Increased freight traffic and related negative externalities such as greenhouse gas emissions and local air pollution can impede sustainability goals. In response, e-retailers are exploring innovative distribution strategies to enhance last-mil
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Jaller, M., Pahwa, A., Saphores, J. D., & Hyland, M. (2024). Benefits, Challenges, and Opportunities of Different Last-Mile Delivery Strategies (Report No. UC-ITS-RIMI-3H). University of California Institute of Transportation Studies. http://dx.doi.org/10.7922/G26971ZW
Jaller, Miguel, Anmol Pahwa, Jean-Daniel Saphores, and Michael Hyland. Benefits, Challenges, and Opportunities of Different Last-Mile Delivery Strategies. Report no. UC-ITS-RIMI-3H. University of California Institute of Transportation Studies, 2024. http://dx.doi.org/10.7922/G26971ZW.
Jaller, Miguel, et al. Benefits, Challenges, and Opportunities of Different Last-Mile Delivery Strategies. University of California Institute of Transportation Studies, 2024, Report no. UC-ITS-RIMI-3H, ROSA P. http://dx.doi.org/10.7922/G26971ZW.
The late merge, or “zipper” merge, has become a common strategy to increase work zone capacity by encouraging drivers to stay in their lanes until they reach a defined merge area, where they alternately merge. While the zipper merge has been shown to provide improved operational performance, there is considerable variability in driver familiarity a
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Savolainen, P. T., Gates, T. J., Brown, H., Edara, P. K., Sun, C., Gupta, G., Mohammadpour, M., Qing, Z., & Chang, D. Y. (2024). Improving the Effectiveness of Zipper Merge Lane Control in Freeway Work Zones (Report No. Part of TPF-5(438)). Smart Work Zone Deployment Initiative. https://rosap.ntl.bts.gov/view/dot/80869
Savolainen, Peter T., Timothy J. Gates, Henry Brown, Praveen K. Edara, Carlos Sun, Gagan Gupta, Matin Mohammadpour, Zhu Qing, and Dae Yeol Chang. Improving the Effectiveness of Zipper Merge Lane Control in Freeway Work Zones. Report no. Part of TPF-5(438). Smart Work Zone Deployment Initiative, 2024. https://rosap.ntl.bts.gov/view/dot/80869.
Savolainen, Peter T., et al. Improving the Effectiveness of Zipper Merge Lane Control in Freeway Work Zones. Smart Work Zone Deployment Initiative, 2024, Report no. Part of TPF-5(438), ROSA P. https://rosap.ntl.bts.gov/view/dot/80869.
This research sought to identify best practices for channelized right-turn lanes (CRT) that better accommodate the safety and accessibility needs of all road users. This was accomplished through a comprehensive literature review, a state-of-the-practice survey of state and local roadway agencies (nationwide and within Minnesota), a review of agency
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Gates, T. J., Kay, J. J., & Savolainen, P. T. (2024). Pedestrian Safety and Accessibility Best Practices for Channelized Right-Turn Lanes (Report No. MN 2024-31). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/79187
Gates, Timothy J., Jonathan J. Kay, and Peter T. Savolainen. Pedestrian Safety and Accessibility Best Practices for Channelized Right-Turn Lanes. Report no. MN 2024-31. Minnesota. Department of Transportation. Office of Research & Innovation, 2024. https://rosap.ntl.bts.gov/view/dot/79187.
Gates, Timothy J., et al. Pedestrian Safety and Accessibility Best Practices for Channelized Right-Turn Lanes. Minnesota. Department of Transportation. Office of Research & Innovation, 2024, Report no. MN 2024-31, ROSA P. https://rosap.ntl.bts.gov/view/dot/79187.
The objective of the control system is to run the deicing system efficiently and effectively under different winter weather conditions. The system can be operated for bridge deicing in heat pump or bypass mode. The heat pump mode involves all four heat pumps and the GLHE during bridge deicing, while the bypass mode only relies on GLHE to heat the b
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Yu, X., Puppala, A. J., Lei, G., Bhaskar, P., Fakhrabadi, A., & Deshmukh, A. (2024). Use of Geothermal Energy for Deicing Approach Pavement Slabs and Bridge Decks: Phase II Extension. University of Texas at Arlington. https://rosap.ntl.bts.gov/view/dot/80387
Yu, Xinbao, Anand J. Puppala, Gang Lei, Puneet Bhaskar, Alireza Fakhrabadi, and Aditya Deshmukh. Use of Geothermal Energy for Deicing Approach Pavement Slabs and Bridge Decks: Phase II Extension. University of Texas at Arlington, 2024. https://rosap.ntl.bts.gov/view/dot/80387.
Yu, Xinbao, et al. Use of Geothermal Energy for Deicing Approach Pavement Slabs and Bridge Decks: Phase II Extension. University of Texas at Arlington, 2024, ROSA P. https://rosap.ntl.bts.gov/view/dot/80387.
The late merge, or “zipper” merge, has become a common strategy to increase work zone capacity by encouraging drivers to stay in their lanes until they reach a defined merge area, where they alternately merge. While the zipper merge has been shown to provide improved operational performance, there is considerable variability in driver familiarity a
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Savolainen, P. T., & Gates, T. J. (2024). Improving the Effectiveness of Zipper Merge Lane Control in Freeway Work Zones [Summary] (Report No. Part of TPF-5(438), Part of InTrans Project 20-733). Smart Work Zone Deployment Initiative. https://rosap.ntl.bts.gov/view/dot/80870
Savolainen, Peter T. and Timothy J. Gates. Improving the Effectiveness of Zipper Merge Lane Control in Freeway Work Zones [Summary]. Report no. Part of TPF-5(438), Part of InTrans Project 20-733. Smart Work Zone Deployment Initiative, 2024. https://rosap.ntl.bts.gov/view/dot/80870.
Savolainen, Peter T., and Timothy J. Gates Improving the Effectiveness of Zipper Merge Lane Control in Freeway Work Zones [Summary]. Smart Work Zone Deployment Initiative, 2024, Report no. Part of TPF-5(438), Part of InTrans Project 20-733, ROSA P. https://rosap.ntl.bts.gov/view/dot/80870.
The Louisiana Department of Transportation and Development (DOTD) and other agencies continually identify techniques to reduce roadway maintenance and construction costs. One common approach to this task is the introduction of asphalt mixtures with a smaller nominal maximum aggregate size (NMAS) for utilization in roadways. Excessive stockpiles of
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Salari, S., & Rupnow, T. D. (2024). Development of a 4.75-mm Asphalt Mixture Design [Technical Summary] (Report No. LTRC Report 702). Louisiana Transportation Research Center. https://rosap.ntl.bts.gov/view/dot/78997
Salari, Saman and Tyson D. Rupnow. Development of a 4.75-mm Asphalt Mixture Design [Technical Summary]. Report no. LTRC Report 702. Louisiana Transportation Research Center, 2024. https://rosap.ntl.bts.gov/view/dot/78997.
Salari, Saman, and Tyson D. Rupnow Development of a 4.75-mm Asphalt Mixture Design [Technical Summary]. Louisiana Transportation Research Center, 2024, Report no. LTRC Report 702, ROSA P. https://rosap.ntl.bts.gov/view/dot/78997.
United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
2024-12-01
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OST-R Research Roundup
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News from across OST-R and its research community.
United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology (2024). OST-R Research Roundup: November/December 2024. United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology. https://rosap.ntl.bts.gov/view/dot/79605
United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology. OST-R Research Roundup: November/December 2024. United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology, 2024. https://rosap.ntl.bts.gov/view/dot/79605.
United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology OST-R Research Roundup: November/December 2024. United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology, 2024, ROSA P. https://rosap.ntl.bts.gov/view/dot/79605.
Through this research, NJ TRANSIT sought to understand how women and members of the lesbian, gay, bisexual, transgender, queer plus community, sometimes referred to as sexual and gender minorities (SGMs) travel on NJ TRANSIT so the agency can provide better accommodations for all customers, regardless of sexual orientation or gender identity. The o
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Carnegie, J. A., Rosenthal, S., & Heady, C. (2024). Understanding How Marginalized Genders Travel Using NJ TRANSIT (Report No. FHWA NJ-2025-001). New Jersey. Department of Transportation. Bureau of Research. https://rosap.ntl.bts.gov/view/dot/84017
Carnegie, Jon A., Sam Rosenthal, and Cate Heady. Understanding How Marginalized Genders Travel Using NJ TRANSIT. Report no. FHWA NJ-2025-001. New Jersey. Department of Transportation. Bureau of Research, 2024. https://rosap.ntl.bts.gov/view/dot/84017.
Carnegie, Jon A., et al. Understanding How Marginalized Genders Travel Using NJ TRANSIT. New Jersey. Department of Transportation. Bureau of Research, 2024, Report no. FHWA NJ-2025-001, ROSA P. https://rosap.ntl.bts.gov/view/dot/84017.
The objective of this report is to provide a benchmark for elevator managers in assessing performance and supply a source for recognizing trends in the characteristics of North Dakota elevators. This report and the statistics mailed to individual elevators are presented as a source of information for elevator managers and those interested in the No
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Vachal, K., Peterson, D., & Benson, D. (2024). Annual North Dakota Elevator Marketing Report, 2023-2024 (Report No. 329). Upper Great Plains Transportation Institute. https://rosap.ntl.bts.gov/view/dot/79087
Vachal, Kimberly, Del Peterson, and Doug Benson. Annual North Dakota Elevator Marketing Report, 2023-2024. Report no. 329. Upper Great Plains Transportation Institute, 2024. https://rosap.ntl.bts.gov/view/dot/79087.
Vachal, Kimberly, et al. Annual North Dakota Elevator Marketing Report, 2023-2024. Upper Great Plains Transportation Institute, 2024, Report no. 329, ROSA P. https://rosap.ntl.bts.gov/view/dot/79087.
With increasing trends and public requests for crosswalks, agencies are seeking resources on best practices and guidance for pedestrian crossings to improve safety, comfort, and consistency of the transportation network. This guidebook provides a comprehensive overview of rural pedestrian crossings for both pedestrians and drivers by examining Minn
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Brunkhorst, J., & Large, J. (2024). Rural Pedestrian Crossings: A Guide (Report No. 2025RIC01). Minnesota. Department of Transportation. Local Road Research Board. https://rosap.ntl.bts.gov/view/dot/83148
Brunkhorst, John and Jonathan Large. Rural Pedestrian Crossings: A Guide. Report no. 2025RIC01. Minnesota. Department of Transportation. Local Road Research Board, 2024. https://rosap.ntl.bts.gov/view/dot/83148.
Brunkhorst, John, and Jonathan Large Rural Pedestrian Crossings: A Guide. Minnesota. Department of Transportation. Local Road Research Board, 2024, Report no. 2025RIC01, ROSA P. https://rosap.ntl.bts.gov/view/dot/83148.
The Louisiana Department of Transportation and Development (DOTD) and other agencies continually identify techniques to reduce roadway maintenance and construction costs. One common approach to this task is the introduction of asphalt mixtures with a smaller nominal maximum aggregate size (NMAS) for utilization in roadways. Excessive stockpiles of
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Salari, S., & Cooper III, S. B. (2024). Development of a 4.75-mm Asphalt Mixture Design (Report No. FHWA/LA.24/702). Louisiana. Department of Transportation and Development. https://rosap.ntl.bts.gov/view/dot/78996
Salari, Saman and Samuel B Cooper III. Development of a 4.75-mm Asphalt Mixture Design. Report no. FHWA/LA.24/702. Louisiana. Department of Transportation and Development, 2024. https://rosap.ntl.bts.gov/view/dot/78996.
Salari, Saman, and Samuel B Cooper III Development of a 4.75-mm Asphalt Mixture Design. Louisiana. Department of Transportation and Development, 2024, Report no. FHWA/LA.24/702, ROSA P. https://rosap.ntl.bts.gov/view/dot/78996.
This report examines the relationships between the characteristics of transit-oriented development (TOD) and (1) the use of transit and non-motorized modes (walking, cycling, scooting) and (2) local shopping behaviors and behavioral changes during and after the COVID-19 pandemic. The team gathered data from 341 respondents via an online survey and
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Smart, M., & DiPetrillo, S. (2024). Transit Usage Impacts of NJ Transit-Oriented Developments (TODS) [Brief] (Report No. FHWA-NJ-2024-006). New Jersey. Department of Transportation. Bureau of Research. https://rosap.ntl.bts.gov/view/dot/84061
Smart, Michael and Stephanie DiPetrillo. Transit Usage Impacts of NJ Transit-Oriented Developments (TODS) [Brief]. Report no. FHWA-NJ-2024-006. New Jersey. Department of Transportation. Bureau of Research, 2024. https://rosap.ntl.bts.gov/view/dot/84061.
Smart, Michael, and Stephanie DiPetrillo Transit Usage Impacts of NJ Transit-Oriented Developments (TODS) [Brief]. New Jersey. Department of Transportation. Bureau of Research, 2024, Report no. FHWA-NJ-2024-006, ROSA P. https://rosap.ntl.bts.gov/view/dot/84061.
This project was undertaken to develop tools and guidelines for designing efficient, sustainable, and environmentally compliant salt storage facilities for winter maintenance operations. The project addressed critical issues such as environmental impacts of chloride runoff, optimization of facility design and location, and the development of tools
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Nixon, W. A., Williams, C., Kennedy, D., & Evans, M. (2024). Salt Shed Design Template (Report No. CR 20-06). Minnesota. Department of Transportation. Clear Roads Pooled Fund. https://rosap.ntl.bts.gov/view/dot/79787
Nixon, Wilfrid A., Clay Williams, Daniel Kennedy, and Mickey Evans. Salt Shed Design Template. Report no. CR 20-06. Minnesota. Department of Transportation. Clear Roads Pooled Fund, 2024. https://rosap.ntl.bts.gov/view/dot/79787.
Nixon, Wilfrid A., et al. Salt Shed Design Template. Minnesota. Department of Transportation. Clear Roads Pooled Fund, 2024, Report no. CR 20-06, ROSA P. https://rosap.ntl.bts.gov/view/dot/79787.
Roadside litter is increasing in the state of Utah, especially along landfill haul routes frequented by Trash/Recycling Vehicles and Construction Debris Haulers. These "hotspot" areas pose health and safety concerns for the public and for water resources. Litter cleanup creates an added burden for limited state forces, and the cost is shouldered by
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Chamberlin, R., & Thomas, C. (2024). Utah Roadside Litter Solutions (Report No. UT-24.21). Utah. Dept. of Transportation. Research Division. https://rosap.ntl.bts.gov/view/dot/79414
Chamberlin, Robert and Chris Thomas. Utah Roadside Litter Solutions. Report no. UT-24.21. Utah. Dept. of Transportation. Research Division, 2024. https://rosap.ntl.bts.gov/view/dot/79414.
Chamberlin, Robert, and Chris Thomas Utah Roadside Litter Solutions. Utah. Dept. of Transportation. Research Division, 2024, Report no. UT-24.21, ROSA P. https://rosap.ntl.bts.gov/view/dot/79414.
The western massasauga (Sistrurus tergeminus) and the timber rattlesnake (Crotalus horridus) are protected under Nebraska Statute 37-801-811 and listed as threatened species. These species occur in the right-of-way (ROW) along several roads in Jefferson, Gage, Pawnee, and Richardson Counties which necessitates the need for added Environmental Revie
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Dunn, S., Fogell, D., & Rothe-Groleau, C. (2024). Minimizing Take of Threatened Rattlesnakes and Optimizing Project Review in SE Nebraska (Report No. SPR-FY23(019)). Nebraska. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/80491
Dunn, Shaun, Daniel Fogell, and Colleen Rothe-Groleau. Minimizing Take of Threatened Rattlesnakes and Optimizing Project Review in SE Nebraska. Report no. SPR-FY23(019). Nebraska. Department of Transportation, 2024. https://rosap.ntl.bts.gov/view/dot/80491.
Dunn, Shaun, et al. Minimizing Take of Threatened Rattlesnakes and Optimizing Project Review in SE Nebraska. Nebraska. Department of Transportation, 2024, Report no. SPR-FY23(019), ROSA P. https://rosap.ntl.bts.gov/view/dot/80491.
This research project summarizes various aspects of pedestrian crossings, focusing on rural roads in Minnesota. The project seeks to provide a comprehensive overview of pedestrian crossings for both pedestrians and drivers by examining Minnesota statutes, summarizing key features of pedestrian crossings, synthesizing findings from existing research
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Brunkhorst, J., & Large, J. (2024). Rural Pedestrian Crossing (Report No. 2025RIC01). Minnesota. Department of Transportation. Local Road Research Board. https://rosap.ntl.bts.gov/view/dot/83368
Brunkhorst, John and Jonathan Large. Rural Pedestrian Crossing. Report no. 2025RIC01. Minnesota. Department of Transportation. Local Road Research Board, 2024. https://rosap.ntl.bts.gov/view/dot/83368.
Brunkhorst, John, and Jonathan Large Rural Pedestrian Crossing. Minnesota. Department of Transportation. Local Road Research Board, 2024, Report no. 2025RIC01, ROSA P. https://rosap.ntl.bts.gov/view/dot/83368.
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