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.
The primary goal for this project was to evaluate the efficacy of A709 Grade QST 65 steel for use in Iowa bridge projects. The objectives of the project were as follows: Identify the current state of use of A709 Grade QST 65 steel in bridge projects; Identify the ductility and strength characteristics of A709 Grade QST 65 steel through full-scale l
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Dahlberg, J. M. (2022). Evaluation of the Performance of A709 Grade 65 QST Bridge Steel (Report No. IHRB Project TR-779). Iowa State University. Bridge Engineering Center. https://rosap.ntl.bts.gov/view/dot/65664
Dahlberg, Justin M.. Evaluation of the Performance of A709 Grade 65 QST Bridge Steel. Report no. IHRB Project TR-779. Iowa State University. Bridge Engineering Center, 2022. https://rosap.ntl.bts.gov/view/dot/65664.
Dahlberg, Justin M. Evaluation of the Performance of A709 Grade 65 QST Bridge Steel. Iowa State University. Bridge Engineering Center, 2022, Report no. IHRB Project TR-779, ROSA P. https://rosap.ntl.bts.gov/view/dot/65664.
Disabled and abandoned vehicles (DAVs) are a common occurrence on Florida roadways. This research focused on evaluating the operational and safety impacts of DAVs and identifying and evaluating methods to reduce these impacts. A comprehensive literature review showed that previous studies focused on DAV response (including the use of innovative tow
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Al-Deek, H., Sandt, A., McCombs, J., Carrick, G., Cornelison, E., Ginsberg, E., Lopez Sanchez, A., Dollman, D., & Chudgar, V. (2022). Study of Operational and Safety Impacts of Disabled and Abandoned Vehicles on FDOT Roadways. Florida Department of Transportation. https://rosap.ntl.bts.gov/view/dot/70404
Al-Deek, Haitham, Adrian Sandt, John McCombs, Grady Carrick, Erik Cornelison, Eric Ginsberg, Angel Lopez Sanchez, Daniel Dollman, and Vishay Chudgar. Study of Operational and Safety Impacts of Disabled and Abandoned Vehicles on FDOT Roadways. Florida Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/70404.
Al-Deek, Haitham, et al. Study of Operational and Safety Impacts of Disabled and Abandoned Vehicles on FDOT Roadways. Florida Department of Transportation, 2022, ROSA P. https://rosap.ntl.bts.gov/view/dot/70404.
The Indiana Department of Transportation (INDOT) uses about 600 digital cameras along populated Indiana highways in order to monitor highway traffic conditions. The videos from these cameras are currently observed by human operators looking for traffic conditions and incidents. However, it is time-consuming for the operators to scan through all vid
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Chien, S., Christopher, L., Chen, Y., Qiu, M., & Lin, W. (2022). Integration of Lane-Specific Traffic Data Generated From Real-time CCTV Videos Into INDOT’s Traffic Management System (Report No. FHWA/IN/JTRP-2022/25). Purdue University. Joint Transportation Research Program. https://doi.org/10.5703/1288284317400
Chien, Stanley, Lauren Christopher, Yaobin Chen, Mei Qiu, and Wei Lin. Integration of Lane-Specific Traffic Data Generated From Real-time CCTV Videos Into INDOT’s Traffic Management System. Report no. FHWA/IN/JTRP-2022/25. Purdue University. Joint Transportation Research Program, 2022. https://doi.org/10.5703/1288284317400.
Chien, Stanley, et al. Integration of Lane-Specific Traffic Data Generated From Real-time CCTV Videos Into INDOT’s Traffic Management System. Purdue University. Joint Transportation Research Program, 2022, Report no. FHWA/IN/JTRP-2022/25, ROSA P. https://doi.org/10.5703/1288284317400.
This study explores the nature and extent of problems related to pedestrian user experience at Minnesota roundabouts. Pedestrian user experience in this study is measured by way of studying driver-yielding rates toward pedestrians at Minnesota roundabout crossings, pedestrian infrastructure design, and pedestrian behavior characteristics at Minneso
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Godavarthy, R., Russell, E., Sharma, K., Saha, N., Molina, A., & Ezekwem, K. (2022). Pedestrian User Experience at Roundabouts (Report No. MN 2023-01). Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation. https://rosap.ntl.bts.gov/view/dot/66609
Godavarthy, Ranjit, Eugene Russell, Kshitij Sharma, Niloy Saha, Antonio Molina, and Kenechukwu Ezekwem. Pedestrian User Experience at Roundabouts. Report no. MN 2023-01. Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation, 2022. https://rosap.ntl.bts.gov/view/dot/66609.
Godavarthy, Ranjit, et al. Pedestrian User Experience at Roundabouts. Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation, 2022, Report no. MN 2023-01, ROSA P. https://rosap.ntl.bts.gov/view/dot/66609.
This technical report describes the sample design, data collection, data coding, weighting, estimation methods, and findings of the Medium-Truck Special Study (MTSS), the purpose of which is to identify critical reasons for the critical events and causal factors in fatal crashes and to assess if crash avoidance technologies could have affected the
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Mynatt, M., Zhang, F., Brophy, J., Subramanian, R., & Morgan, T. (2022). Medium-Truck Special Study (Report No. DOT HS 813 371). United States. Department of Transportation. National Highway Traffic Safety Administration. https://rosap.ntl.bts.gov/view/dot/78517
Mynatt, Mark, Fan Zhang, John Brophy, Rajesh Subramanian, and Tina Morgan. Medium-Truck Special Study. Report no. DOT HS 813 371. United States. Department of Transportation. National Highway Traffic Safety Administration, 2022. https://rosap.ntl.bts.gov/view/dot/78517.
Mynatt, Mark, et al. Medium-Truck Special Study. United States. Department of Transportation. National Highway Traffic Safety Administration, 2022, Report no. DOT HS 813 371, ROSA P. https://rosap.ntl.bts.gov/view/dot/78517.
The 24/7 Sobriety Program is an intervention strategy mandating that alcohol-impaired driving offenders remain sober as a condition of bond or pre-trial release. The goal is to monitor the most at-risk offenders in North Dakota and require that these individuals remain sober in order to keep roadways safe from hazardous drivers. As a component of t
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Vachal, K., & Zhou, Y. (2022). The 24/7 Sobriety Program’s Effects on Impaired Drivers in North Dakota: 2014–2021 (Report No. 317). Upper Great Plains Transportation Institute. https://rosap.ntl.bts.gov/view/dot/66191
Vachal, Kimberly and Yun Zhou. The 24/7 Sobriety Program’s Effects on Impaired Drivers in North Dakota: 2014–2021. Report no. 317. Upper Great Plains Transportation Institute, 2022. https://rosap.ntl.bts.gov/view/dot/66191.
Vachal, Kimberly, and Yun Zhou The 24/7 Sobriety Program’s Effects on Impaired Drivers in North Dakota: 2014–2021. Upper Great Plains Transportation Institute, 2022, Report no. 317, ROSA P. https://rosap.ntl.bts.gov/view/dot/66191.
Horizontal curves can improve the safety and comfort of a ride for drivers and passengers by preventing a sharp turn from one direction to another. However, the role of curves in vehicle crashes and their safety impacts are underestimated due to the substantial number of curve-related crash misclassifications in CRIS. Therefore, there is an urgent
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Xu, Y., Han, Z., Murphy, M., & Zhang, Z. (2022). Development of an Automated Methodological Procedure To Improve the Identification of Curve-Related Crashes in the Crash Records Information System (CRIS) (Report No. FHWA/TX-22/0-7050-1). University of Texas at Austin. Center for Transportation Research. https://rosap.ntl.bts.gov/view/dot/64509
Xu, Yang, Zhe Han, Michael Murphy, and Zhanmin Zhang. Development of an Automated Methodological Procedure To Improve the Identification of Curve-Related Crashes in the Crash Records Information System (CRIS). Report no. FHWA/TX-22/0-7050-1. University of Texas at Austin. Center for Transportation Research, 2022. https://rosap.ntl.bts.gov/view/dot/64509.
Xu, Yang, et al. Development of an Automated Methodological Procedure To Improve the Identification of Curve-Related Crashes in the Crash Records Information System (CRIS). University of Texas at Austin. Center for Transportation Research, 2022, Report no. FHWA/TX-22/0-7050-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/64509.
Florida’s massive population growth brings higher emphasis on the freight and logistics aspect in Florida and the challenge of maximizing the economic development potential by attracting more companies to the State. Above mentioned challenge necessitated this project to find optimal areas which are most suitable for logistics activities to be locat
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Ozkul, S., Hooker, R., Rangarajan, A., & Silveira, A. D. O. (2022). FDOT Land Use Analysis to Enhance Successful Logistics Activity Center Development in Florida. Florida Department of Transportation. https://rosap.ntl.bts.gov/view/dot/75090
Ozkul, Seckin, Robert Hooker, Adhithyan Rangarajan, and Alysson De Oliveira Silveira. FDOT Land Use Analysis to Enhance Successful Logistics Activity Center Development in Florida. Florida Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/75090.
Ozkul, Seckin, et al. FDOT Land Use Analysis to Enhance Successful Logistics Activity Center Development in Florida. Florida Department of Transportation, 2022, ROSA P. https://rosap.ntl.bts.gov/view/dot/75090.
United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
2022-09-01
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This edition of Traffic Safety Facts briefly summarizes motor vehicle crash data from 2020 and compares them to the period 2011 to 2020. Among the key findings: In 2020 an estimated 38,824 people were killed in 5,250,837 police-reported traffic crashes and an estimated 2,282,015 people were injured, a 6.8 percent increase in fatalities compared to
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United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis (2022). Traffic Safety Facts 2020 Data: Summary of Motor Vehicle Crashes (Report No. DOT HS 813 369). United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis. https://rosap.ntl.bts.gov/view/dot/77477
United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis. Traffic Safety Facts 2020 Data: Summary of Motor Vehicle Crashes. Report no. DOT HS 813 369. United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis, 2022. https://rosap.ntl.bts.gov/view/dot/77477.
United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis Traffic Safety Facts 2020 Data: Summary of Motor Vehicle Crashes. United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis, 2022, Report no. DOT HS 813 369, ROSA P. https://rosap.ntl.bts.gov/view/dot/77477.
In this study, the research team determined if raveling can be assessed through Florida’s existing pavement condition survey or through new 3D pavement surface data collection systems currently being implemented by Florida. Once raveling is accurately accounted for separately, it should then be accounted for in subsequent pavement performance forec
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Greene, J., Hsieh, Y. A., & Yu, L. (2022). A Review of Florida’s FC-5 Raveling Condition Assessment and Measurement Methods [Summary] (Report No. BE939). Florida. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/68942
Greene, James, Yung-An Hsieh, and Lucas Yu. A Review of Florida’s FC-5 Raveling Condition Assessment and Measurement Methods [Summary]. Report no. BE939. Florida. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/68942.
Greene, James, et al. A Review of Florida’s FC-5 Raveling Condition Assessment and Measurement Methods [Summary]. Florida. Department of Transportation, 2022, Report no. BE939, ROSA P. https://rosap.ntl.bts.gov/view/dot/68942.
This experimental study was developed to evaluate the shear performance of spliced post-tensioned girders with grouted and ungrouted ducts. Demand for expedited construction processes and increased girder spans make spliced girder systems attractive options for medium- to long-span bridges. Since the spliced girder elements are subjected to signifi
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Han, S., Zaborac, J., Webb, Z. D., Choi, J., Ferche, A. C., & Bayrak, O. (2022). Shear Behavior of Spliced Post-tensioned Girders With Ungrouted Tendons: Final Report (Report No. FHWA/TX-22/5-6652-01-1). University of Texas at Austin. Center for Transportation Research. https://rosap.ntl.bts.gov/view/dot/64674
Han, Sangyoung, Jarrod Zaborac, Zachary D Webb, Jongkwon Choi, Anca C Ferche, and Oguzhan Bayrak. Shear Behavior of Spliced Post-tensioned Girders With Ungrouted Tendons: Final Report. Report no. FHWA/TX-22/5-6652-01-1. University of Texas at Austin. Center for Transportation Research, 2022. https://rosap.ntl.bts.gov/view/dot/64674.
Han, Sangyoung, et al. Shear Behavior of Spliced Post-tensioned Girders With Ungrouted Tendons: Final Report. University of Texas at Austin. Center for Transportation Research, 2022, Report no. FHWA/TX-22/5-6652-01-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/64674.
A MassDOT goal is to have an overall idea of the pavement condition of state and local roads in Massachusetts. This study cataloged the different pavement management systems (PMS) being used by municipalities, Metropolitan Planning Organizations (MPOs), and Regional Planning Agencies (RPAs) throughout Massachusetts. A comprehensive literature revie
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Mogawer, W. S., Austerman, A. J., & Beaudry, E. (2022). Understanding Asset Management Systems Utilized by Municipalities in Massachusetts (Report No. 22-034). Massachusetts. Dept. of Transportation. Office of Transportation Planning. https://rosap.ntl.bts.gov/view/dot/65611
Mogawer, Walaa S., Alexander J. Austerman, and Eric Beaudry. Understanding Asset Management Systems Utilized by Municipalities in Massachusetts. Report no. 22-034. Massachusetts. Dept. of Transportation. Office of Transportation Planning, 2022. https://rosap.ntl.bts.gov/view/dot/65611.
Mogawer, Walaa S., et al. Understanding Asset Management Systems Utilized by Municipalities in Massachusetts. Massachusetts. Dept. of Transportation. Office of Transportation Planning, 2022, Report no. 22-034, ROSA P. https://rosap.ntl.bts.gov/view/dot/65611.
The capabilities of unmanned/uncrewed aerial system (UAS) continue to advance, with a wide variety of applications useful for the condition assessment and monitoring of transportation infrastructure. This Phase 3 project focused on four UAS uses cases and how to integrate their results into Michigan Department of Transportation (MDOT) databases and
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Cook, S. J. (2022). Integrating Drones Into MDOT’s Day-to-Day Traffic and Asset Management [Project Spotlight]. Michigan Department of Transportation. Research Administration. https://rosap.ntl.bts.gov/view/dot/66362
Cook, Steven J.. Integrating Drones Into MDOT’s Day-to-Day Traffic and Asset Management [Project Spotlight]. Michigan Department of Transportation. Research Administration, 2022. https://rosap.ntl.bts.gov/view/dot/66362.
Cook, Steven J. Integrating Drones Into MDOT’s Day-to-Day Traffic and Asset Management [Project Spotlight]. Michigan Department of Transportation. Research Administration, 2022, ROSA P. https://rosap.ntl.bts.gov/view/dot/66362.
The goal of this study was to develop an AASHTOWare® Pavement M-E user’s manual and develop a local experimental plan and sampling template for Massachusetts. A stand-alone software manual was developed that provides a thorough step-by-step procedure on how to use the software. The manual guides users on how to generate the data, in particular, mat
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Mogawer, W. S., Austerman, A. J., & Abdalfattah, I. M. (2022). Improving the Long-term Condition of Pavements in Massachusetts and Determining Return on Investment: Implementing the AASHTO Mechanistic-Empirical Pavement Design Guide—PHASE II (Report No. 22-033). Massachusetts. Dept. of Transportation. Office of Transportation Planning. https://rosap.ntl.bts.gov/view/dot/65612
Mogawer, Walaa S., Alexander J. Austerman, and Ibrahim M Abdalfattah. Improving the Long-term Condition of Pavements in Massachusetts and Determining Return on Investment: Implementing the AASHTO Mechanistic-Empirical Pavement Design Guide—PHASE II. Report no. 22-033. Massachusetts. Dept. of Transportation. Office of Transportation Planning, 2022. https://rosap.ntl.bts.gov/view/dot/65612.
Mogawer, Walaa S., et al. Improving the Long-term Condition of Pavements in Massachusetts and Determining Return on Investment: Implementing the AASHTO Mechanistic-Empirical Pavement Design Guide—PHASE II. Massachusetts. Dept. of Transportation. Office of Transportation Planning, 2022, Report no. 22-033, ROSA P. https://rosap.ntl.bts.gov/view/dot/65612.
Florida struggles with a serious imbalance between inbound and outbound freight. Statistics from the Federal Highway Administration reveal that the total freight tonnage entering Florida is nearly double the tonnage leaving the state. This imbalance suggests that many trucks and other modes of freight transportation leave the state empty or only pa
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Ozkul, S., Hooker, R., Sharma, A., & Pattanashetty, V. H. (2022). FDOT Identification of Prospective Solutions for Florida Trade Imbalance and Empty Backhauls. Florida Department of Transportation. https://rosap.ntl.bts.gov/view/dot/75097
Ozkul, Seckin, Robert Hooker, Ankita Sharma, and Vishal Honnali Pattanashetty. FDOT Identification of Prospective Solutions for Florida Trade Imbalance and Empty Backhauls. Florida Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/75097.
Ozkul, Seckin, et al. FDOT Identification of Prospective Solutions for Florida Trade Imbalance and Empty Backhauls. Florida Department of Transportation, 2022, ROSA P. https://rosap.ntl.bts.gov/view/dot/75097.
The product developed by Project 0-7050 is an automated methodological procedure for identifying curve-related crashes in CRIS. This document provides detailed information on the implementation of the automated methodological procedure. In order to automatically implement the methodological procedure for identifying curve-related crashes, the CTR r
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Xu, Y., Han, Z., Murphy, M., & Zhang, Z. (2022). Automated Methodological Procedure for Identifying Curve-Related Crashes in CRIS (Report No. 0-7050-P1). University of Texas at Austin. Center for Transportation Research. https://rosap.ntl.bts.gov/view/dot/64506
Xu, Yang, Zhe Han, Michael Murphy, and Zhanmin Zhang. Automated Methodological Procedure for Identifying Curve-Related Crashes in CRIS. Report no. 0-7050-P1. University of Texas at Austin. Center for Transportation Research, 2022. https://rosap.ntl.bts.gov/view/dot/64506.
Xu, Yang, et al. Automated Methodological Procedure for Identifying Curve-Related Crashes in CRIS. University of Texas at Austin. Center for Transportation Research, 2022, Report no. 0-7050-P1, ROSA P. https://rosap.ntl.bts.gov/view/dot/64506.
The goal of the survey was to help identify transportation issues faced by older Floridians and guide the SMFLC in developing strategies and resources to address these issues. Behaviors and attitudes of interest included use of various transportation options, planning for retirement from driving, self-assessment of driving behavior, and others. The
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Holley, G. M., & Barrett, A. (2022). Transportation-Related Behaviors and Attitudes: A Survey of Florida’s Aging Road Users [Summary] (Report No. BDV30-977-32). Florida. Department of Transportation. Research Center. https://rosap.ntl.bts.gov/view/dot/67957
Holley, Gail M. and Anne Barrett. Transportation-Related Behaviors and Attitudes: A Survey of Florida’s Aging Road Users [Summary]. Report no. BDV30-977-32. Florida. Department of Transportation. Research Center, 2022. https://rosap.ntl.bts.gov/view/dot/67957.
Holley, Gail M., and Anne Barrett Transportation-Related Behaviors and Attitudes: A Survey of Florida’s Aging Road Users [Summary]. Florida. Department of Transportation. Research Center, 2022, Report no. BDV30-977-32, ROSA P. https://rosap.ntl.bts.gov/view/dot/67957.
The Vermont Agency of Transportation (Vermont AOT) hosted a virtual peer exchange on June 7, 14 and 21, 2022, to discuss topics related to transportation research with other state departments of transportation (DOTs). The meeting and the subsequent publication of this report fulfill the agency’s obligation to conduct a periodic peer exchange as par
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Johnson, K., & Seeber, K. (2022). Vermont Agency of Transportation 2022 Research Peer Exchange (Report No. 2022-02). Vermont. Agency of Transportation. https://rosap.ntl.bts.gov/view/dot/64933
Johnson, Katie and Kirsten Seeber. Vermont Agency of Transportation 2022 Research Peer Exchange. Report no. 2022-02. Vermont. Agency of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/64933.
Johnson, Katie, and Kirsten Seeber Vermont Agency of Transportation 2022 Research Peer Exchange. Vermont. Agency of Transportation, 2022, Report no. 2022-02, ROSA P. https://rosap.ntl.bts.gov/view/dot/64933.
In transportation planning and decision-making processes, public involvement (PI) is critical as the daily users of transportation share useful insights, opinions, and observations on the performance and needs of the transportation systems. Virtual Public Involvement (VPI) is the use of digital technology to engage individuals in project planning a
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Ashuri, B., Kingsley, G., Delargy, C., Ambaliya, D., & Kim, E. (2022). Virtual Public Involvement (VPI) Guidance for Encouraging Public Participation and Soliciting Feedback During the Transportation Planning Process (Report No. FHWA-GA-22-2025). Georgia. Department of Transportation. Office of Performance-Based Management & Research. https://rosap.ntl.bts.gov/view/dot/65486
Ashuri, Baabak, Gordon Kingsley, Colin Delargy, Digvijay Ambaliya, and Eryn Kim. Virtual Public Involvement (VPI) Guidance for Encouraging Public Participation and Soliciting Feedback During the Transportation Planning Process. Report no. FHWA-GA-22-2025. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2022. https://rosap.ntl.bts.gov/view/dot/65486.
Ashuri, Baabak, et al. Virtual Public Involvement (VPI) Guidance for Encouraging Public Participation and Soliciting Feedback During the Transportation Planning Process. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2022, Report no. FHWA-GA-22-2025, ROSA P. https://rosap.ntl.bts.gov/view/dot/65486.
With the advancement of automated vehicle technologies, it is critical to understand the knowledge gap among drivers on the limitations and safety restrictions of existing advanced driving assistance systems (ADAS), which contributes to dangerous driving habits and misjudgments. For example, some ADAS include adaptive cruise control, but many drive
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Rahman, M. A., & Mekker, M. (2022). Development of Educational Materials for the Public and First Responders on the Limitations of Advanced Driving Assistance Systems (Report No. UT-22.11). Utah Department of Transportation. https://rosap.ntl.bts.gov/view/dot/64860
Rahman, Md Ashikur and Michelle Mekker. Development of Educational Materials for the Public and First Responders on the Limitations of Advanced Driving Assistance Systems. Report no. UT-22.11. Utah Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/64860.
Rahman, Md Ashikur, and Michelle Mekker Development of Educational Materials for the Public and First Responders on the Limitations of Advanced Driving Assistance Systems. Utah Department of Transportation, 2022, Report no. UT-22.11, ROSA P. https://rosap.ntl.bts.gov/view/dot/64860.
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