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 authors analyze what ridehail drivers do when out of service between paid trips. The authors use a dataset of 5.3 million trips in San Francisco and partition each out of service trip into cruising, repositioning, and parking segments. The authors find that repositioning accounts for nearly two-thirds (63%) of the time between trips, with cruis
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Millard-Ball, A., Liu, L., Hansen, W., Cooper, D., & Castiglione, J. (2021). Where Ridehail Drivers Go Between Trips: Trading off Congestion and Curb Availability? (Report No. UC-ITS-2020-15). University of California Institute of Transportation Studies. https://doi.org/10.7922/G2QV3JTZ
Millard-Ball, Adam, Liwei Liu, Whitney Hansen, Drew Cooper, and Joe Castiglione. Where Ridehail Drivers Go Between Trips: Trading off Congestion and Curb Availability?. Report no. UC-ITS-2020-15. University of California Institute of Transportation Studies, 2021. https://doi.org/10.7922/G2QV3JTZ.
Millard-Ball, Adam, et al. Where Ridehail Drivers Go Between Trips: Trading off Congestion and Curb Availability?. University of California Institute of Transportation Studies, 2021, Report no. UC-ITS-2020-15, ROSA P. https://doi.org/10.7922/G2QV3JTZ.
MnDOT’s commitment to offer opportunities for meaningful input and to advance equity in transportation. Disruptive events such as the COVID-19 pandemic that limit or cut off in-person engagement present challenges to MnDOT’s efforts to continue its commitment to public engagement. The COVID-19 pandemic prompted MnDOT to explore new ways to engage w
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Kline, C. F. (2021). Public Engagement Practices During the COVID-19 Pandemic and Other Disruptive Events (Report No. TRS 2103). Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation. https://rosap.ntl.bts.gov/view/dot/57135
Kline, Christine F.. Public Engagement Practices During the COVID-19 Pandemic and Other Disruptive Events. Report no. TRS 2103. Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation, 2021. https://rosap.ntl.bts.gov/view/dot/57135.
Kline, Christine F. Public Engagement Practices During the COVID-19 Pandemic and Other Disruptive Events. Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation, 2021, Report no. TRS 2103, ROSA P. https://rosap.ntl.bts.gov/view/dot/57135.
Research shows that even with the continuous development of coating technology, coating systems are still susceptible to deterioration and thus unable to provide protection for the long-term designed bridge service life. Recent advancement on data analytics offers an opportunity to leverage the wealth of historical data processed by State Departmen
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Zhang, L., Lv, X., Lau, K., Viswanathan, S., Li, M., & Gosain, P. (2021). Assessment of Structural Steel Coating Applications. Florida Department of Transportation. https://rosap.ntl.bts.gov/view/dot/62600
Zhang, Lu, Xuan Lv, Kingsley Lau, Subramanian Viswanathan, Muyun Li, and Parasar Gosain. Assessment of Structural Steel Coating Applications. Florida Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/62600.
Zhang, Lu, et al. Assessment of Structural Steel Coating Applications. Florida Department of Transportation, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/62600.
The magnetic flux leakage (MFL) method has been identified as a promising non-destructive testing technique for detecting metal loss in external post-tensioned tendons and stay-cables. However, for internal tendons, the interfering signals from secondary ferromagnetic materials, such as mild reinforcement, can generate complicated signals and may l
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Javed, A., Sadeghnejad, A., Rehmat, S. e., Yakel, A., & Azizinamini, A. (2021). Magnetic Flux Leakage (MFL) Method for Damage Detection in Internal Post-Tensioning Tendons. Florida. Department of Transportation. Research Center. https://rosap.ntl.bts.gov/view/dot/62244
Javed, Ali, Amir Sadeghnejad, Sheharyar e Rehmat, Aaron Yakel, and Atorod Azizinamini. Magnetic Flux Leakage (MFL) Method for Damage Detection in Internal Post-Tensioning Tendons. Florida. Department of Transportation. Research Center, 2021. https://rosap.ntl.bts.gov/view/dot/62244.
Javed, Ali, et al. Magnetic Flux Leakage (MFL) Method for Damage Detection in Internal Post-Tensioning Tendons. Florida. Department of Transportation. Research Center, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/62244.
Accelerated bridge construction (ABC) utilizes precast members to minimize on-site construction time, making it an appealing alternative to conventional cast-in-place (CIP) construction. The connections between these precast members are crucial as they must maintain structural integrity, and in regions of moderate and high seismic activity, ensure
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Schwartz, T., Saiid Saiidi, M., & Moustafa, M. (2021). Simplifying Cast-In-Place Joint Design Using ABC Pocket Connection Details in High Seismic Regions (Report No. 494-18-803). Nevada Department of Transportation. https://rosap.ntl.bts.gov/view/dot/64499
Schwartz, Taylor, M Saiid Saiidi, and Mohamed Moustafa. Simplifying Cast-In-Place Joint Design Using ABC Pocket Connection Details in High Seismic Regions. Report no. 494-18-803. Nevada Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/64499.
Schwartz, Taylor, et al. Simplifying Cast-In-Place Joint Design Using ABC Pocket Connection Details in High Seismic Regions. Nevada Department of Transportation, 2021, Report no. 494-18-803, ROSA P. https://rosap.ntl.bts.gov/view/dot/64499.
The transportation studies literature recognizes the relationship between accessibility and active travel. However, there is limited research on the specific impact of walking and cycling accessibility to multi-use paths on active travel behavior. Combined with the culture of automobile dependency in the US, this knowledge gap has been making it di
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Wang, C. H., & Chen, N. (2021). Do Multi-Use-Path Accessibility and Clustering Effect Play a Role in Residents' Choice of Walking and Cycling? (Report No. 21-12). Mineta Transportation Institute. https://doi.org/10.31979/mti.2021.2011
Wang, Chih-Hao and Na Chen. Do Multi-Use-Path Accessibility and Clustering Effect Play a Role in Residents' Choice of Walking and Cycling?. Report no. 21-12. Mineta Transportation Institute, 2021. https://doi.org/10.31979/mti.2021.2011.
Wang, Chih-Hao, and Na Chen Do Multi-Use-Path Accessibility and Clustering Effect Play a Role in Residents' Choice of Walking and Cycling?. Mineta Transportation Institute, 2021, Report no. 21-12, ROSA P. https://doi.org/10.31979/mti.2021.2011.
This report presents a statistical analysis of the Regulated Substances Library (RSL) developed by the Illinois Department of Transportation. The RSL is comprised of surficial soil chemistry data obtained from rights-of-way subsurface soil sampling conducted for routine preliminary site investigations. The 3.7-million-record RSL database is compare
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Studying accessibility, including the resilience of city transportation networks, is critical to understand how these networks influence individuals’ mobility and lives. This study developed an analytical research framework to examine the resilience of accessibility to emergency and lifesaving facilities under the threats of natural hazards such as
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DatasetSupporting Files
Wang, C. H., & Chen, N. (2021). Investigating the Resilience of Accessibility to Emergency and Lifesaving Facilities under Natural Hazards [supporting dataset] (Report No. 22-21). Mineta Transportation Institute. https://rosap.ntl.bts.gov/view/dot/64563
Wang, Chih-Hao and Na Chen. Investigating the Resilience of Accessibility to Emergency and Lifesaving Facilities under Natural Hazards [supporting dataset]. Report no. 22-21. Mineta Transportation Institute, 2021. https://rosap.ntl.bts.gov/view/dot/64563.
Wang, Chih-Hao, and Na Chen Investigating the Resilience of Accessibility to Emergency and Lifesaving Facilities under Natural Hazards [supporting dataset]. Mineta Transportation Institute, 2021, Report no. 22-21, ROSA P. https://rosap.ntl.bts.gov/view/dot/64563.
Reclaimed stabilized base (RSB) is a common technique utilized to rehabilitate roadways. RSB involves reclaiming the base material and adding a stabilizing agent to increase the strength and durability of the base/subbase structure. This technique involves pulverizing some of the existing pavement along with a portion of the underlying base materia
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Ghazanfari, E., Lens, J. E., & Khorasani, A. (2021). Reclaimed Stabilized Base – Stabilizing Agent Selection & Design [Fact Sheet]. Vermont Agency of Transportation. https://rosap.ntl.bts.gov/view/dot/78716
Ghazanfari, Ehsan, John E. Lens, and Ali Khorasani. Reclaimed Stabilized Base – Stabilizing Agent Selection & Design [Fact Sheet]. Vermont Agency of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/78716.
Ghazanfari, Ehsan, et al. Reclaimed Stabilized Base – Stabilizing Agent Selection & Design [Fact Sheet]. Vermont Agency of Transportation, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/78716.
In the United States vehicle weight limits are set by laws and regulations enacted at the state and federal levels. On interstates the maximum allowable gross vehicle weight is 80,000 lbs. States use different rules for permitting over-dimensional and overweight (OD/OW) vehicles, and most have carve outs that exempt specific commodities from standa
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Marks, P. G., Wilcoxson, J., Gibson, B., Van Dyke, C., Walton, J., & Kreis, D. (2021). Analysis of Truck Weight Limit Regulations (Report No. KTC-21-15/SPR19-570-1F). University of Kentucky Transportation Center. https://doi.org/10.13023/ktc.rr.2021.15
Marks, P Gayle, Jon Wilcoxson, Bryan Gibson, Chris Van Dyke, Jennifer Walton, and Doug Kreis. Analysis of Truck Weight Limit Regulations. Report no. KTC-21-15/SPR19-570-1F. University of Kentucky Transportation Center, 2021. https://doi.org/10.13023/ktc.rr.2021.15.
Marks, P Gayle, et al. Analysis of Truck Weight Limit Regulations. University of Kentucky Transportation Center, 2021, Report no. KTC-21-15/SPR19-570-1F, ROSA P. https://doi.org/10.13023/ktc.rr.2021.15.
Individuals who use wheelchairs or who have other mobility challenges often are unable to access modern mobility systems – including application-based ride hailing and on-demand microtransit. Even designing a system targeted at these users is challenging, given the limited prior analysis of their travel behavior and activity patterns. Simulation to
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Macfarlane, G. S., & Lant, N. J. (2021). Estimation and Simulation of Daily Activity Patterns for Individuals Using Wheelchairs (Report No. UT- 21.10). Utah. Dept. of Transportation. Division of Research. https://rosap.ntl.bts.gov/view/dot/56982
Macfarlane, Gregory S and Nathan J Lant. Estimation and Simulation of Daily Activity Patterns for Individuals Using Wheelchairs. Report no. UT- 21.10. Utah. Dept. of Transportation. Division of Research, 2021. https://rosap.ntl.bts.gov/view/dot/56982.
Macfarlane, Gregory S, and Nathan J Lant Estimation and Simulation of Daily Activity Patterns for Individuals Using Wheelchairs. Utah. Dept. of Transportation. Division of Research, 2021, Report no. UT- 21.10, ROSA P. https://rosap.ntl.bts.gov/view/dot/56982.
The Utah Department of Transportation (UDOT) has difficulty conveying to the public all of the user benefits that result from UDOT’s snowplow operations. This project is focused on communicating the importance to travelers of snowplow operations in terms of travel time saved and travel time improved vs. not plowing. This information will be added t
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Moser, A., Wells, K., Keenan, S., & Perry, L. (2021). Time and Cost Benefits for Traffic Through Snowplow Operations (Report No. UT-21.34). Utah Department of Transportation. https://rosap.ntl.bts.gov/view/dot/60872
Moser, Andrea, Kevin Wells, Sean Keenan, and Lyndi Perry. Time and Cost Benefits for Traffic Through Snowplow Operations. Report no. UT-21.34. Utah Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/60872.
Moser, Andrea, et al. Time and Cost Benefits for Traffic Through Snowplow Operations. Utah Department of Transportation, 2021, Report no. UT-21.34, ROSA P. https://rosap.ntl.bts.gov/view/dot/60872.
This manual provides guidance on how to use the cone penetration test (CPT) for site investigation and foundation design. The manual has been organized into three volumes. Volume 1 covers the execution of CPT-based site investigations and presents a comprehensive literature review of CPT-based soil behavior type (SBT) charts and estimation of soil
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Niazi, F. (2021). CPT-Based Geotechnical Design Manual, Volume 1: CPT Interpretation—Estimation of Soil Properties (Report No. FHWA/IN/JTRP-2021/22). Purdue University. Joint Transportation Research Program. https://doi.org/10.5703/1288284317346
In the past, achieving high strength was considered by the Texas Department of Transportation (TxDOT) as the main design criteria for formulating high-performance concrete (HPC). TxDOT considers mix design options 1–5 in Item 421 as HPC, and these options were developed for alkali silica reaction (ASR) mitigation and not for other durability aspect
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Mukhopadhyay, A., & Saraswatula, P. (2021). Developing Performance Specifications for High-Performance Concrete: Technical Report (Report No. FHWA/TX-24/0-6958-R1). Texas A&M Transportation Institute. https://rosap.ntl.bts.gov/view/dot/75675
Mukhopadhyay, Anol and Pravin Saraswatula. Developing Performance Specifications for High-Performance Concrete: Technical Report. Report no. FHWA/TX-24/0-6958-R1. Texas A&M Transportation Institute, 2021. https://rosap.ntl.bts.gov/view/dot/75675.
Mukhopadhyay, Anol, and Pravin Saraswatula Developing Performance Specifications for High-Performance Concrete: Technical Report. Texas A&M Transportation Institute, 2021, Report no. FHWA/TX-24/0-6958-R1, ROSA P. https://rosap.ntl.bts.gov/view/dot/75675.
Accelerated bridge construction (ABC) may be preferable to conventional cast-in-place (CIP) construction because it can significantly expedite project delivery. The design of precast member connections is critical as the connections must maintain structural integrity and provide for ductile behavior under strong earthquakes. Pocket/socket connectio
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Camarena, C., Saiidi, M. S., & Moustafa, M. (2021). Development and Seismic Evaluation of Cast-in-Place Emulating ABC Pocket Connections and SMA Reinforced Two-Way Hinges (Report No. 593-18-803). Nevada Department of Transportation. https://rosap.ntl.bts.gov/view/dot/64490
Camarena, Christian, M Saiid Saiidi, and Mohamed Moustafa. Development and Seismic Evaluation of Cast-in-Place Emulating ABC Pocket Connections and SMA Reinforced Two-Way Hinges. Report no. 593-18-803. Nevada Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/64490.
Camarena, Christian, et al. Development and Seismic Evaluation of Cast-in-Place Emulating ABC Pocket Connections and SMA Reinforced Two-Way Hinges. Nevada Department of Transportation, 2021, Report no. 593-18-803, ROSA P. https://rosap.ntl.bts.gov/view/dot/64490.
Right-to-take challenges delay a condemnor’s project delivery schedule. Issuing efficient and effective responses to these challenges is critical for successful project completion. This report extrapolates information from Kentucky case law to assess trends in decisions and strategies for preventing and litigating these challenges. A condemnor’s ri
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Clay-Young, P., & Waddle, S. (2021). Understanding and Efficiently Managing Right-To-Take Challenges in Kentucky (Report No. KTC-21-11/KHIT136-1F). University of Kentucky Transportation Center. https://doi.org/10.13023/ktc.rr.2021.11
Clay-Young, Pam and Steven Waddle. Understanding and Efficiently Managing Right-To-Take Challenges in Kentucky. Report no. KTC-21-11/KHIT136-1F. University of Kentucky Transportation Center, 2021. https://doi.org/10.13023/ktc.rr.2021.11.
Clay-Young, Pam, and Steven Waddle Understanding and Efficiently Managing Right-To-Take Challenges in Kentucky. University of Kentucky Transportation Center, 2021, Report no. KTC-21-11/KHIT136-1F, ROSA P. https://doi.org/10.13023/ktc.rr.2021.11.
The Virginia Department of Transportation (VDOT) implements a number of different best management practices to meet pollutant load reductions associated with the Chesapeake Bay Total Maximum Daily Load (TMDL) Program. Although commonly implemented best management practices include structural practices such as bioretention filters and extended deten
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Lloyd, L. N. (2021). Evaluation of the Virginia Department of Transportation’s Current Practices for Tracking Storm Drain Cleaning Operations To Support Pollutant Removal Crediting (Report No. FHWA/VTRC 21-R25). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/56933
Lloyd, Lewis N.. Evaluation of the Virginia Department of Transportation’s Current Practices for Tracking Storm Drain Cleaning Operations To Support Pollutant Removal Crediting. Report no. FHWA/VTRC 21-R25. Virginia Transportation Research Council (VTRC), 2021. https://rosap.ntl.bts.gov/view/dot/56933.
Lloyd, Lewis N. Evaluation of the Virginia Department of Transportation’s Current Practices for Tracking Storm Drain Cleaning Operations To Support Pollutant Removal Crediting. Virginia Transportation Research Council (VTRC), 2021, Report no. FHWA/VTRC 21-R25, ROSA P. https://rosap.ntl.bts.gov/view/dot/56933.
Over the last thirty years, the Minnesota Department of Transportation (MnDOT) has implemented biofilters along roadways as a stormwater control measure. The state and national regulations require that the biofilters must be able to infiltrate and treat the first inch of rainfall onsite. However, the performance of the biofilters after installation
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Cai, M., Patelke, M., & Saftner, D. (2021). Continued Monitoring of Stormwater Effluents From Filter Media in Two Bioslope Sites (Report No. MN 2021-15). Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation. https://rosap.ntl.bts.gov/view/dot/56892
Cai, Meijun, Marsha Patelke, and David Saftner. Continued Monitoring of Stormwater Effluents From Filter Media in Two Bioslope Sites. Report no. MN 2021-15. Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation, 2021. https://rosap.ntl.bts.gov/view/dot/56892.
Cai, Meijun, et al. Continued Monitoring of Stormwater Effluents From Filter Media in Two Bioslope Sites. Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation, 2021, Report no. MN 2021-15, ROSA P. https://rosap.ntl.bts.gov/view/dot/56892.
Plastic pollution has become one of the major concerns in the world. Plastic waste is not biodegradable, which makes it difficult to manage waste plastic pollution. Recycling and reusing waste plastic is an effective way to manage plastic pollution. Because of the huge quantity of waste plastic released into the world, industries requiring a large
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Saadeh, S., & Katawal, P. (2021). Performance Testing of Hot Mix Asphalt Modified With Recycled Waste Plastic (Report No. 21-14). Mineta Transportation Institute. https://doi.org/10.31979/mti.2021.2045
Saadeh, Shadi and Pritam Katawal. Performance Testing of Hot Mix Asphalt Modified With Recycled Waste Plastic. Report no. 21-14. Mineta Transportation Institute, 2021. https://doi.org/10.31979/mti.2021.2045.
Saadeh, Shadi, and Pritam Katawal Performance Testing of Hot Mix Asphalt Modified With Recycled Waste Plastic. Mineta Transportation Institute, 2021, Report no. 21-14, ROSA P. https://doi.org/10.31979/mti.2021.2045.
The Well Control Equipment Systems Safety – 2019 Annual Report, produced by the Bureau of Transportation Statistics, summarizes well control equipment (WCE) failure events that occurred during well operations in the Gulf of Mexico (GOM) Outer Continental Shelf (OCS) during the calendar year. This report is based on information collected through Saf
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Hu, P. S., Schmidt, R. R., & Collia, D. (2021). Well Control Equipment Systems Safety: 2019 Annual Report. United States. Department of Transportation. Bureau of Transportation Statistics. https://doi.org/10.21949/1518379
Hu, Patricia S., Rolf R. Schmidt, and Demetra Collia. Well Control Equipment Systems Safety: 2019 Annual Report. United States. Department of Transportation. Bureau of Transportation Statistics, 2021. https://doi.org/10.21949/1518379.
Hu, Patricia S., et al. Well Control Equipment Systems Safety: 2019 Annual Report. United States. Department of Transportation. Bureau of Transportation Statistics, 2021, ROSA P. https://doi.org/10.21949/1518379.
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