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.
Monitoring the spatial-temporal variation of surface moisture content in highway soil embankment/dam has a practical implication for earth embankment/dam safety. The knowledge of soil moisture content on the surface of earth embankment/dams can help engineers monitor the dynamic evolvement of slope stability due to the adverse effect of excessive m
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Zhang, Z., & Chen, Q. (2023). Exploration of Drone and Remote Sensing Technologies in Highway Embankment Monitoring and Management (Phase I) [Tech Summary]. Louisiana. Department of Transportation and Development. https://rosap.ntl.bts.gov/view/dot/72589
Zhang, Zhongjie and Qiming Chen. Exploration of Drone and Remote Sensing Technologies in Highway Embankment Monitoring and Management (Phase I) [Tech Summary]. Louisiana. Department of Transportation and Development, 2023. https://rosap.ntl.bts.gov/view/dot/72589.
Zhang, Zhongjie, and Qiming Chen Exploration of Drone and Remote Sensing Technologies in Highway Embankment Monitoring and Management (Phase I) [Tech Summary]. Louisiana. Department of Transportation and Development, 2023, ROSA P. https://rosap.ntl.bts.gov/view/dot/72589.
Erosion control blankets (ECBs) protect soil from being detached and transported by raindrops and subsequential overland runoff while assisting in vegetation growth. ECBs have several characteristics, for example, thickness, mass per unit area, tensile strength, elongation, water absorption, etc. However, the impact of these characteristics on the
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Bhattarai, R., Zhang, Y., & Yao, O. (2023). Evaluation of Net-free Erosion Control Blankets (Report No. FHWA-ICT-23-019). Illinois Center for Transportation. https://doi.org/10.36501/0197-9191/23-026
Bhattarai, Rabin, Yufan Zhang, and Owen Yao. Evaluation of Net-free Erosion Control Blankets. Report no. FHWA-ICT-23-019. Illinois Center for Transportation, 2023. https://doi.org/10.36501/0197-9191/23-026.
Bhattarai, Rabin, et al. Evaluation of Net-free Erosion Control Blankets. Illinois Center for Transportation, 2023, Report no. FHWA-ICT-23-019, ROSA P. https://doi.org/10.36501/0197-9191/23-026.
This research summary was created as part of Report 2023-24, "Guidelines for safer pedestrian crossings: Understanding the factors that positively influence vehicle yielding to pedestrians at unsignalized intersections," published June 2023.
Stern, R., & Pritchard, H. (2023). Understanding Factors That Influence Driver Yielding to Pedestrians [Summary] (Report No. Report 2023-24). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/74832
Stern, Raphael and Hannah Pritchard. Understanding Factors That Influence Driver Yielding to Pedestrians [Summary]. Report no. Report 2023-24. Minnesota. Department of Transportation. Office of Research & Innovation, 2023. https://rosap.ntl.bts.gov/view/dot/74832.
Stern, Raphael, and Hannah Pritchard Understanding Factors That Influence Driver Yielding to Pedestrians [Summary]. Minnesota. Department of Transportation. Office of Research & Innovation, 2023, Report no. Report 2023-24, ROSA P. https://rosap.ntl.bts.gov/view/dot/74832.
Deer-vehicle collisions (DVCs) represent a significant hazard on Minnesota roads, with roughly 1,200 DVCs reported annually to the Minnesota Department of Public Safety (MnDPS) and many more going unreported. While DVCs are common across Minnesota, local variations in deer density as well as roadway characteristics and use patterns make DVCs more l
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Stern, R., Moen, R., Zare, A., & Bober, M. (2023). Identifying Deer Vehicle Collision Concentrations in Minnesota (Report No. MN 2023-38). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/77724
Stern, Raphael, Ron Moen, Arian Zare, and Marissa Bober. Identifying Deer Vehicle Collision Concentrations in Minnesota. Report no. MN 2023-38. Minnesota. Department of Transportation. Office of Research & Innovation, 2023. https://rosap.ntl.bts.gov/view/dot/77724.
Stern, Raphael, et al. Identifying Deer Vehicle Collision Concentrations in Minnesota. Minnesota. Department of Transportation. Office of Research & Innovation, 2023, Report no. MN 2023-38, ROSA P. https://rosap.ntl.bts.gov/view/dot/77724.
This evaluation determined the change in crash frequency, type or severity associated with longitudinal sinusoidal rumble strips on rural two-lane undivided Minnesota roadways constructed between 2018 and 2022. Crash modification factors (CMFs) were estimated using cross-sectional analysis to compare crash experience of locations with sinusoidal ru
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Storm, R., Herring, R., Irmen, S., Raad, M., Giesbrecht, A., & Wemple, B. (2023). Sinusoidal Rumble Strips Safety Evaluation (Report No. MN 2023-40). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/73125
Storm, Richard, Rebecca Herring, Sarah Irmen, May Raad, Aaron Giesbrecht, and Beth Wemple. Sinusoidal Rumble Strips Safety Evaluation. Report no. MN 2023-40. Minnesota. Department of Transportation. Office of Research & Innovation, 2023. https://rosap.ntl.bts.gov/view/dot/73125.
Storm, Richard, et al. Sinusoidal Rumble Strips Safety Evaluation. Minnesota. Department of Transportation. Office of Research & Innovation, 2023, Report no. MN 2023-40, ROSA P. https://rosap.ntl.bts.gov/view/dot/73125.
The U.S. Environmental Protection Agency requires efforts to reduce the amount of sediment generated (i.e., erosion control) and the off-site transport of sediment and construction-related chemicals (i.e., sediment and chemical control) at all construction sites. Sediment from construction sites represents the largest pollutant source among several
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McFalls, J., & Foster, D. (2023). Developing a Performance Evaluation Facility for Sediment Control Devices (Report No. FHWA/TX-23/0-7100-R1). Texas A&M Transportation Institute. https://rosap.ntl.bts.gov/view/dot/73230
McFalls, Jett and Derrold Foster. Developing a Performance Evaluation Facility for Sediment Control Devices. Report no. FHWA/TX-23/0-7100-R1. Texas A&M Transportation Institute, 2023. https://rosap.ntl.bts.gov/view/dot/73230.
McFalls, Jett, and Derrold Foster Developing a Performance Evaluation Facility for Sediment Control Devices. Texas A&M Transportation Institute, 2023, Report no. FHWA/TX-23/0-7100-R1, ROSA P. https://rosap.ntl.bts.gov/view/dot/73230.
Update on the work and accomplishments of the United States Department of Transportation from 2021-2023.
United States. Department of Transportation (2023). Delivering Results for America: USDOT Progress Report: 2021-2023. United States. Department of Transportation. https://doi.org/10.21949/91g6-be92
United States. Department of Transportation. Delivering Results for America: USDOT Progress Report: 2021-2023. United States. Department of Transportation, 2023. https://doi.org/10.21949/91g6-be92.
United States. Department of Transportation Delivering Results for America: USDOT Progress Report: 2021-2023. United States. Department of Transportation, 2023, ROSA P. https://doi.org/10.21949/91g6-be92.
Non-proprietary ultra-high-performance concrete (UHPC) mixtures were developed for use in closure strips between precast members on reinforced concrete bridges. The mixtures contained ODOT approved Type I portland cement, slag cement, silica fume, graded fine aggregate, two high-range water-reducers (HRWRs), one of which incorporated a viscosity mo
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Darwin, D., O’Reilly, M., Lequesne, R. D., & Thapa, S. (2023). Bond Behavior of Epoxy-Coated Reinforcing Bars in Non-Proprietary UHPC (Report No. FHWA-OK-23-04). Oklahoma. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/89170
Darwin, David, Matthew O’Reilly, Remy D. Lequesne, and Sanjeeb Thapa. Bond Behavior of Epoxy-Coated Reinforcing Bars in Non-Proprietary UHPC. Report no. FHWA-OK-23-04. Oklahoma. Department of Transportation, 2023. https://rosap.ntl.bts.gov/view/dot/89170.
Darwin, David, et al. Bond Behavior of Epoxy-Coated Reinforcing Bars in Non-Proprietary UHPC. Oklahoma. Department of Transportation, 2023, Report no. FHWA-OK-23-04, ROSA P. https://rosap.ntl.bts.gov/view/dot/89170.
The primary objectives of this research were to: 1) develop an efficient and accurate method for bridge repair and replacement cost estimating; and 2) implement the developed method in a cost estimation worksheet; 3) provide an automated system that allows periodic updating of costs. To accomplish these objectives, several modeling approaches were
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Eamon, C. D., Shinki, K., Darwish, I., Garcia, J., Wong, K. H., Alsendi, A., & Hozeski, E. (2023). Enhanced Bridge Cost Estimating (Report No. SPR-1732). Michigan Department of Transportation. Research Administration. https://rosap.ntl.bts.gov/view/dot/89377
Eamon, Christopher D., Kazuhiko Shinki, Ihab Darwish, Jose Garcia, Kin Hang Wong, Ahmad Alsendi, and Erika Hozeski. Enhanced Bridge Cost Estimating. Report no. SPR-1732. Michigan Department of Transportation. Research Administration, 2023. https://rosap.ntl.bts.gov/view/dot/89377.
Eamon, Christopher D., et al. Enhanced Bridge Cost Estimating. Michigan Department of Transportation. Research Administration, 2023, Report no. SPR-1732, ROSA P. https://rosap.ntl.bts.gov/view/dot/89377.
Truck parking issues stem from the lack of available designated parking at convenient locations, and Federal Hours of Service (HOS) regulations of the Federal Motor Carrier Safety Administration (FMCSA) that require drivers to rest at specific intervals. Truck parking capacity has not kept up with the demand, leaving truck drivers with few options
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Bucklew, K., Anater, P., Flaskou, M., & Gawade, M. (2023). Idaho Truck Parking Research Project (Report No. FHWA-ID-23-300). Idaho Transportation Department. https://rosap.ntl.bts.gov/view/dot/90126
Bucklew, Keith, Patrick Anater, Mania Flaskou, and Makarand Gawade. Idaho Truck Parking Research Project. Report no. FHWA-ID-23-300. Idaho Transportation Department, 2023. https://rosap.ntl.bts.gov/view/dot/90126.
Bucklew, Keith, et al. Idaho Truck Parking Research Project. Idaho Transportation Department, 2023, Report no. FHWA-ID-23-300, ROSA P. https://rosap.ntl.bts.gov/view/dot/90126.
The research included preliminary design studies to quantify the reduction in the number of shear studs that can be achieved with larger-diameter shear studs. This was followed by an extensive investigation of stud welding, followed by push-out tests to evaluate the static and fatigue performance of larger-diameter shear studs. Parametric finite el
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Deng, X., Wan, L., Alp, Y., Williamson, E., Koutromanos, I., & Lee, J. (2023). Use of Larger-Diameter Shear Studs for Composite Steel Bridges [Project Summary] (Report No. 0-7042). University of Texas at Austin. Center for Transportation Research. https://rosap.ntl.bts.gov/view/dot/72764
Deng, Xianjue, Lu Wan, Yucel Alp, Eric Williamson, Ioannis Koutromanos, and Jeonghwa Lee. Use of Larger-Diameter Shear Studs for Composite Steel Bridges [Project Summary]. Report no. 0-7042. University of Texas at Austin. Center for Transportation Research, 2023. https://rosap.ntl.bts.gov/view/dot/72764.
Deng, Xianjue, et al. Use of Larger-Diameter Shear Studs for Composite Steel Bridges [Project Summary]. University of Texas at Austin. Center for Transportation Research, 2023, Report no. 0-7042, ROSA P. https://rosap.ntl.bts.gov/view/dot/72764.
This project evaluated prioritized roadside safety issues and resulted in new or improved roadside safety devices. Devices found to be MASH compliant are suitable for implementation. Implementation of these roadside safety devices will improve motorist safety, reduce material and installation costs, and/or improve operations. These devices are bein
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Bligh, R., Cakalli, S., Sheikh, N. M., & Williams, W. (2023). Roadside Safety Device Analysis, Testing, and Evaluation Program [Project Summary Report] (Report No. 0-7086). Texas A&M Transportation Institute. https://rosap.ntl.bts.gov/view/dot/80593
Bligh, Roger, Sofokli Cakalli, Nauman M. Sheikh, and William Williams. Roadside Safety Device Analysis, Testing, and Evaluation Program [Project Summary Report]. Report no. 0-7086. Texas A&M Transportation Institute, 2023. https://rosap.ntl.bts.gov/view/dot/80593.
Bligh, Roger, et al. Roadside Safety Device Analysis, Testing, and Evaluation Program [Project Summary Report]. Texas A&M Transportation Institute, 2023, Report no. 0-7086, ROSA P. https://rosap.ntl.bts.gov/view/dot/80593.
The Texas Department of Transportation (TxDOT) wishes to move from a reactive to a proactive response during flood emergency operations. Real-time flood map services provide valuable information for TxDOT flood decision making. The National Weather Service initiated the operation of real-time flood inundation maps for Texas in October 2023. The res
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Maidment, D., Passalacqua, P., Bartos, M., Timilsina, S., Oh, J., Carter, A., Whiteaker, T., Evans, H., Thies, C., Jantzen, L., Ables, M., Bibok, A., Austin, B., Osting, T., Grzyb, S., Avant, J., Thomas, J., Nyman, M., & Blickenstaff, K. (2023). 0-7095: Evaluating Streamflow Measurement at TxDOT Bridges [Summary] (Report No. 0-7095). Texas Department of Transportation. Research and Technology Implementation Office. https://rosap.ntl.bts.gov/view/dot/83468
Maidment, David, Paola Passalacqua, Matt Bartos, Sujana Timilsina, Jeil Oh, Andy Carter, and Tim Whiteaker, et al.. 0-7095: Evaluating Streamflow Measurement at TxDOT Bridges [Summary]. Report no. 0-7095. Texas Department of Transportation. Research and Technology Implementation Office, 2023. https://rosap.ntl.bts.gov/view/dot/83468.
Maidment, David, et al. 0-7095: Evaluating Streamflow Measurement at TxDOT Bridges [Summary]. Texas Department of Transportation. Research and Technology Implementation Office, 2023, Report no. 0-7095, ROSA P. https://rosap.ntl.bts.gov/view/dot/83468.
Ferry electrification is a growing domestic and global trend, driven by an interest in reducing operational and maintenance costs, and mitigating emissions at ports. Ferries are particularly well suited for electrification due to their relatively short travel distances over fixed routes, predictable schedule, and their ample onboard space for batte
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Hildreth, J., Karayaka, B., Bennett, G., Morrison, G., & Gilmore, B. (2023). Vessel Electrification Investigation for the NCDOT Ferry Division Fleet (Report No. FHWNNC/2022-01). North Carolina Department of Transportation. Research and Development Unit. https://rosap.ntl.bts.gov/view/dot/73673
Hildreth, John, Bora Karayaka, Grant Bennett, Geoff Morrison, and Bridget Gilmore. Vessel Electrification Investigation for the NCDOT Ferry Division Fleet. Report no. FHWNNC/2022-01. North Carolina Department of Transportation. Research and Development Unit, 2023. https://rosap.ntl.bts.gov/view/dot/73673.
Hildreth, John, et al. Vessel Electrification Investigation for the NCDOT Ferry Division Fleet. North Carolina Department of Transportation. Research and Development Unit, 2023, Report no. FHWNNC/2022-01, ROSA P. https://rosap.ntl.bts.gov/view/dot/73673.
The objective of this project was to develop a hydraulically efficient portable concrete barrier (PCB) that complies with the American Association of State Highway and Transportation Officials Manual for Assessing Safety Hardware (MASH).
Bligh, R., Silvestri-Dobrovolny, C., Johnson, B. A., Barrett, M. E., Holyoke, J., Hendrickson, G., & Zalani, A. (2023). Develop Standards for Temporary Concrete Median Barrier in Flood-Prone Areas [Project Summary] (Report No. 0-7087). Texas A&M Transportation Institute. https://rosap.ntl.bts.gov/view/dot/77978
Bligh, Roger, Chiara Silvestri-Dobrovolny, Blair A Johnson, Michael E. Barrett, James Holyoke, Gregory Hendrickson, and Aniruddha Zalani. Develop Standards for Temporary Concrete Median Barrier in Flood-Prone Areas [Project Summary]. Report no. 0-7087. Texas A&M Transportation Institute, 2023. https://rosap.ntl.bts.gov/view/dot/77978.
Bligh, Roger, et al. Develop Standards for Temporary Concrete Median Barrier in Flood-Prone Areas [Project Summary]. Texas A&M Transportation Institute, 2023, Report no. 0-7087, ROSA P. https://rosap.ntl.bts.gov/view/dot/77978.
Composite steel bridge girders are typically constructed using 7/8″ diameter shear studs. A large number of shear studs is often needed to satisfy AASHTO shear stud fatigue and strength requirements. Using a larger diameter shear stud can significantly reduce the required number of shear studs which in turn can improve construction worker safety, e
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Deng, X., Wan, L., Alp, Y., Engelhardt, M., Helwig, T., Williamson, E., Koutromanos, I., & Lee, J. (2023). Larger-Diameter Shear Studs for Composite Steel Bridges (Report No. FHWA/TX-24/0-7042-1). University of Texas at Austin. Center for Transportation Research. https://rosap.ntl.bts.gov/view/dot/72763
Deng, Xianjue, Lu Wan, Yucel Alp, Michael Engelhardt, Todd Helwig, Eric Williamson, Ioannis Koutromanos, and Jeonghwa Lee. Larger-Diameter Shear Studs for Composite Steel Bridges. Report no. FHWA/TX-24/0-7042-1. University of Texas at Austin. Center for Transportation Research, 2023. https://rosap.ntl.bts.gov/view/dot/72763.
Deng, Xianjue, et al. Larger-Diameter Shear Studs for Composite Steel Bridges. University of Texas at Austin. Center for Transportation Research, 2023, Report no. FHWA/TX-24/0-7042-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/72763.
This project explored the use and value of AI and ML in transportation taking a multi-pronged approach that includes a literature review, a workshop, a survey, the development of three prototype ML models for four high-priority use cases, and the field testing of one of the prototyped models. Initial tasks were exploratory in nature and led to a be
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Juri, N. R., Perrine, K., Boyles, S., Chin, K., Gold, A., Alexander, W., Avera, M., Nair, G. S., & Robbennolt, J. (2023). Exploring the Use of Artificial Intelligence to Leverage TxDOT Data for Enhanced Corridor Management and Operations [Project Summary] (Report No. 0-7034). University of Texas at Austin. Center for Transportation Research. https://rosap.ntl.bts.gov/view/dot/73573
Juri, Natalia Ruiz, Ken Perrine, Stephen Boyles, Kristie Chin, Andrea Gold, William Alexander, Morgan Avera, Gopindra S Nair, and Jake Robbennolt. Exploring the Use of Artificial Intelligence to Leverage TxDOT Data for Enhanced Corridor Management and Operations [Project Summary]. Report no. 0-7034. University of Texas at Austin. Center for Transportation Research, 2023. https://rosap.ntl.bts.gov/view/dot/73573.
Juri, Natalia Ruiz, et al. Exploring the Use of Artificial Intelligence to Leverage TxDOT Data for Enhanced Corridor Management and Operations [Project Summary]. University of Texas at Austin. Center for Transportation Research, 2023, Report no. 0-7034, ROSA P. https://rosap.ntl.bts.gov/view/dot/73573.
The predominate bridge railing used in the New England States are two-, three-, and four-bar steel post-and-beam designs developed and crash tested under the auspices of the New England Transportation Consortium (NETC). These bridge railing designs are commonly referred to as NETC bridge railings. The crash tests were performed in compliance with t
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Carrigan, C. E., Plaxico, C. A., Ray, E. M., Ray, A., & Ray, M. H. (2023). In-Service Performance Evaluation (ISPE) of New England Transportation Consortium (NETC) Steel Bridge Railings (Report No. 20211012000000000359). New England Transportation Consortium. https://rosap.ntl.bts.gov/view/dot/76982
Carrigan, Christine E, Chuck A. Plaxico, Ethan M Ray, Archie Ray, and Malcolm H. Ray. In-Service Performance Evaluation (ISPE) of New England Transportation Consortium (NETC) Steel Bridge Railings. Report no. 20211012000000000359. New England Transportation Consortium, 2023. https://rosap.ntl.bts.gov/view/dot/76982.
Carrigan, Christine E, et al. In-Service Performance Evaluation (ISPE) of New England Transportation Consortium (NETC) Steel Bridge Railings. New England Transportation Consortium, 2023, Report no. 20211012000000000359, ROSA P. https://rosap.ntl.bts.gov/view/dot/76982.
Objectives • Evaluating the cross-anisotropic stiffness characteristics of Iowa soils and geomaterials through advanced cyclic true triaxial tests. • Evaluating the cross-anisotropic permanent deformation characteristics of Iowa soils and geomaterials through advanced cyclic true triaxial tests. • Determining the effect of freeze-thaw action on sti
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Cetin, B., Ceylan, H., Aydin, C., & Hatipoglu, M. (2023). Advanced Testing and Characterization of Iowa Soils and Geomaterials [Tech Transfer Summary] (Report No. IHRB Project TR-780). Iowa Highway Research Board. https://rosap.ntl.bts.gov/view/dot/73591
Cetin, Bora, Halil Ceylan, Ceren Aydin, and Mustafa Hatipoglu. Advanced Testing and Characterization of Iowa Soils and Geomaterials [Tech Transfer Summary]. Report no. IHRB Project TR-780. Iowa Highway Research Board, 2023. https://rosap.ntl.bts.gov/view/dot/73591.
Cetin, Bora, et al. Advanced Testing and Characterization of Iowa Soils and Geomaterials [Tech Transfer Summary]. Iowa Highway Research Board, 2023, Report no. IHRB Project TR-780, ROSA P. https://rosap.ntl.bts.gov/view/dot/73591.
Work zones pose significant safety challenges on highways, with Commercial Motor Vehicles (CMVs) being particularly susceptible to higher risk due to their larger size, slower acceleration/deceleration rates, and expanded blind spots. This study aimed to assess the impact of various work zone warning measures on the driving behavior of CMV operator
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Jeihani, M., Khadem, N., Taherpour, A., Kabir, M., & Ardeshiri, A. (2023). Comprehensive Study on CMV Safety Using ITS in Work Zones on Freeways and Arterials. Morgan State University. Urban Mobility & Equity Center. https://rosap.ntl.bts.gov/view/dot/72423
Jeihani, Mansoureh, Nashid Khadem, Abolfazl Taherpour, Muhib Kabir, and Anam Ardeshiri. Comprehensive Study on CMV Safety Using ITS in Work Zones on Freeways and Arterials. Morgan State University. Urban Mobility & Equity Center, 2023. https://rosap.ntl.bts.gov/view/dot/72423.
Jeihani, Mansoureh, et al. Comprehensive Study on CMV Safety Using ITS in Work Zones on Freeways and Arterials. Morgan State University. Urban Mobility & Equity Center, 2023, ROSA P. https://rosap.ntl.bts.gov/view/dot/72423.
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