The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations.
Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.
This Performance-Engineered Concrete Paving Mixtures Transportation Pooled Fund—TPF-5(368)—brought newer concrete pavement technologies to state agencies and assisted states in the adoption of specifications and test methods that will help them deliver on the promise of concrete durability.
Taylor, P., Ley, T., Weiss, J., Van Dam, T., Gross, J., & Jones, C. (2022). Performance-Engineered Concrete Paving Mixtures [Tech Summary]. Iowa State University. National Concrete Pavement Technology Center. https://rosap.ntl.bts.gov/view/dot/72271
Taylor, Peter, Tyler Ley, Jason Weiss, Tom Van Dam, Jerod Gross, and Cecil Jones. Performance-Engineered Concrete Paving Mixtures [Tech Summary]. Iowa State University. National Concrete Pavement Technology Center, 2022. https://rosap.ntl.bts.gov/view/dot/72271.
Taylor, Peter, et al. Performance-Engineered Concrete Paving Mixtures [Tech Summary]. Iowa State University. National Concrete Pavement Technology Center, 2022, ROSA P. https://rosap.ntl.bts.gov/view/dot/72271.
The primary objective of this study was to develop a comprehensive guide for remediating cracks in bridge decks in Iowa that users could reference for guidance on the selection and implementation of crack repairs. The guide was to include decision matrices and tables for selecting crack remediation strategies based on existing deck condition, deck
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ElBatanouny, M. K., Hawkins, K. A., Abdelrahman, M. A., Lawler, J. S., Nelson, T. D., & Krauss, P. D. (2022). Guide to Remediate Bridge Deck Cracking [Tech Transfer Summary] (Report No. TR-782). Iowa Highway Research Board. https://rosap.ntl.bts.gov/view/dot/79686
ElBatanouny, Mohamed K., Kathleen A. Hawkins, Marwa A. Abdelrahman, John S. Lawler, Todd D. Nelson, and Paul D. Krauss. Guide to Remediate Bridge Deck Cracking [Tech Transfer Summary]. Report no. TR-782. Iowa Highway Research Board, 2022. https://rosap.ntl.bts.gov/view/dot/79686.
ElBatanouny, Mohamed K., et al. Guide to Remediate Bridge Deck Cracking [Tech Transfer Summary]. Iowa Highway Research Board, 2022, Report no. TR-782, ROSA P. https://rosap.ntl.bts.gov/view/dot/79686.
National Highway Traffic Safety Administration (NHTSA) has reported that pedestrian fatalities increased by 44% from 2010 to 2019, and more than 20% of pedestrian fatalities occurred at intersections. To improve pedestrian safety, it would be necessary to first observe evolving pedestrian behaviors. To serve this purpose, in this research project,
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Li, P. (., Yang, X. (., & Liu, C. (2022). Utilizing LiDAR Sensors to Detect Pedestrian Movements at Signalized Intersections (Report No. UT-22.26). Utah. Dept. of Transportation. Division of Research. https://rosap.ntl.bts.gov/view/dot/74624
Li, Pengfei (Taylor), Xianfeng (Terry) Yang, and Cathy Liu. Utilizing LiDAR Sensors to Detect Pedestrian Movements at Signalized Intersections. Report no. UT-22.26. Utah. Dept. of Transportation. Division of Research, 2022. https://rosap.ntl.bts.gov/view/dot/74624.
Li, Pengfei (Taylor), et al. Utilizing LiDAR Sensors to Detect Pedestrian Movements at Signalized Intersections. Utah. Dept. of Transportation. Division of Research, 2022, Report no. UT-22.26, ROSA P. https://rosap.ntl.bts.gov/view/dot/74624.
Because of Florida’s varied soils, establishing bridge foundation pile lengths can be difficult. Many times, piles must be driven very deep to secure them. Because there are limits on the length of piles that can be shipped to a work site, pile segments are usually connected onsite using dowels to make them longer.
The OTIS software was launched in 2015 to replace “Project Tracking,” the Access-based application ITD first developed to manage STIP-related data. Since then, users have experienced numerous foundational issues with OTIS that cause significant delays and occasional errors. Specifically, there is a two-part, mutually-dependent problem with the soft
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Van Dyke, R., & Munn, C. (2022). Business Analysis for Idaho’s Next Transportation Investment System (Report No. FHWA-ID-22-298, RP 298). Idaho Transportation Department. https://rosap.ntl.bts.gov/view/dot/68685
Van Dyke, Rebecca and Chapman Munn. Business Analysis for Idaho’s Next Transportation Investment System. Report no. FHWA-ID-22-298, RP 298. Idaho Transportation Department, 2022. https://rosap.ntl.bts.gov/view/dot/68685.
Van Dyke, Rebecca, and Chapman Munn Business Analysis for Idaho’s Next Transportation Investment System. Idaho Transportation Department, 2022, Report no. FHWA-ID-22-298, RP 298, ROSA P. https://rosap.ntl.bts.gov/view/dot/68685.
The objective of this research project was to identify and evaluate strategies to mitigate end-of-queue crashes at flagging stations on two-lane roads. The research team evaluated the following treatments based on feasibility and advantages of each treatment: • Install light-emitting diodes (LEDs) or a warning light on the static BE PREPARED TO STO
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Theiss, L., Finley, M. D., Rista, E., & Ullman, G. L. (2022). Evaluation of End-of-Queue Crash Mitigation Strategies at Flagging Stations on Two-Lane Roads (Report No. FHWA/TX-23/0-6998-R1). Texas A&M Transportation Institute. https://rosap.ntl.bts.gov/view/dot/65810
Theiss, LuAnn, Melisa D. Finley, Emira Rista, and Gerald L. Ullman. Evaluation of End-of-Queue Crash Mitigation Strategies at Flagging Stations on Two-Lane Roads. Report no. FHWA/TX-23/0-6998-R1. Texas A&M Transportation Institute, 2022. https://rosap.ntl.bts.gov/view/dot/65810.
Theiss, LuAnn, et al. Evaluation of End-of-Queue Crash Mitigation Strategies at Flagging Stations on Two-Lane Roads. Texas A&M Transportation Institute, 2022, Report no. FHWA/TX-23/0-6998-R1, ROSA P. https://rosap.ntl.bts.gov/view/dot/65810.
With slide-in bridge construction (SIBC), the bridge superstructure is constructed off the final alignment and then slid laterally from the temporary worksite onto the in-place substructure. Once the sliding is complete, closure joints between the bridge super- and sub-structure are cast to establish continuity. The cementitious materials and reinf
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Liu, Z., Alomari, A., & Phares, B. M. (2022). Multi-Span Lateral Slide Laboratory Investigation: Phase II (Report No. InTrans Project 22-786). Iowa State University. Bridge Engineering Center. https://rosap.ntl.bts.gov/view/dot/65973
Liu, Zhengyu, Abdalla Alomari, and Brent M. Phares. Multi-Span Lateral Slide Laboratory Investigation: Phase II. Report no. InTrans Project 22-786. Iowa State University. Bridge Engineering Center, 2022. https://rosap.ntl.bts.gov/view/dot/65973.
Liu, Zhengyu, et al. Multi-Span Lateral Slide Laboratory Investigation: Phase II. Iowa State University. Bridge Engineering Center, 2022, Report no. InTrans Project 22-786, ROSA P. https://rosap.ntl.bts.gov/view/dot/65973.
SMA is designed based on SMA volumetric properties in terms of air voids content (Va), voids in the mineral aggregate(VMA), and adequate stone-on-stone contact. For construction quality assurance (QA) purposes, INDOT currently accepts SMAs based on aggregate gradation and asphalt binder content. Thus, there is a discrepancy between SMA design crite
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Lee, J., Haddock, J. E., & Jeon, J. (2022). Development of Volumetric Acceptance and Percent Within Limits (PWL) and Criteria for Stone Metrix Asphalt (SMA) Mixtures in Indiana (Report No. FHWA/IN/JTRP-2022/29). Purdue University. Joint Transportation Research Program. https://doi.org/10.5703/1288284317580
Lee, Jusang, John E. Haddock, and Jongmyung Jeon. Development of Volumetric Acceptance and Percent Within Limits (PWL) and Criteria for Stone Metrix Asphalt (SMA) Mixtures in Indiana. Report no. FHWA/IN/JTRP-2022/29. Purdue University. Joint Transportation Research Program, 2022. https://doi.org/10.5703/1288284317580.
Lee, Jusang, et al. Development of Volumetric Acceptance and Percent Within Limits (PWL) and Criteria for Stone Metrix Asphalt (SMA) Mixtures in Indiana. Purdue University. Joint Transportation Research Program, 2022, Report no. FHWA/IN/JTRP-2022/29, ROSA P. https://doi.org/10.5703/1288284317580.
The Highway Safety Manual (HSM) contains safety performance functions (SPFs) that are used in project-level decision-making for estimating the average crash frequency by severity level for existing conditions, alternatives to existing conditions, or proposed new roadways. However, SPF calibration is needed because most of the existing HSM SPFs were
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Geedipally, S. R., Dixon, K., Wu, L., Pratt, M. P., Avelar, R., Das, S., Tsapakis, I., Lord, D., & Saini, G. (2022). Calibrating the Highway Safety Manual Predictive Methods for Texas Highways: Technical Report (Report No. FHWA/TX-23/0-7083-R1). Texas Department of Transportation. Research and Technology Implementation Office. https://rosap.ntl.bts.gov/view/dot/65821
Geedipally, Srinivas R., Karen Dixon, Lingtao Wu, Michael P. Pratt, Raul Avelar, Subasish Das, Ioannis Tsapakis, Dominique Lord, and Guneet Saini. Calibrating the Highway Safety Manual Predictive Methods for Texas Highways: Technical Report. Report no. FHWA/TX-23/0-7083-R1. Texas Department of Transportation. Research and Technology Implementation Office, 2022. https://rosap.ntl.bts.gov/view/dot/65821.
Geedipally, Srinivas R., et al. Calibrating the Highway Safety Manual Predictive Methods for Texas Highways: Technical Report. Texas Department of Transportation. Research and Technology Implementation Office, 2022, Report no. FHWA/TX-23/0-7083-R1, ROSA P. https://rosap.ntl.bts.gov/view/dot/65821.
The main objective of this study is to evaluate the safety and operation of existing left-turn signal phases at intersections and investigate relevant data to develop proper guidance on when it is appropriate to install each signal type. The study considered protected-only (PO), protected permitted left-turn (PPLT), and flashing yellow arrow (FYA)
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Thapa, R., Asaduzzaman, M., & Abedi, K. (2022). Evaluating Permitted/Protected Versus Protected Left-Turn Signals in Louisiana (Report No. FHWA/LA.22/669). Louisiana Transportation Research Center. https://rosap.ntl.bts.gov/view/dot/65782
Thapa, Raju, Md Asaduzzaman, and Kwabena Abedi. Evaluating Permitted/Protected Versus Protected Left-Turn Signals in Louisiana. Report no. FHWA/LA.22/669. Louisiana Transportation Research Center, 2022. https://rosap.ntl.bts.gov/view/dot/65782.
Thapa, Raju, et al. Evaluating Permitted/Protected Versus Protected Left-Turn Signals in Louisiana. Louisiana Transportation Research Center, 2022, Report no. FHWA/LA.22/669, ROSA P. https://rosap.ntl.bts.gov/view/dot/65782.
In 2019, a pilot program was initiated by the Wisconsin Department of Transportation (WisDOT) in consultation with the Wisconsin County Highway Association (WCHA) to streamline the delivery and oversight of Low-Risk local bridge projects. The goal of this research project was to evaluate the Low-Risk bridge pilot program and make recommendations be
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Tabatabai, H., Qin, X., & He, Z. (2022). Evaluation of the Local Bridge Improvement Assistance Program (Report No. 0092-21-63). Wisconsin. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/67837
Tabatabai, Habib, Xiao Qin, and Zhaoxiang He. Evaluation of the Local Bridge Improvement Assistance Program. Report no. 0092-21-63. Wisconsin. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/67837.
Tabatabai, Habib, et al. Evaluation of the Local Bridge Improvement Assistance Program. Wisconsin. Department of Transportation, 2022, Report no. 0092-21-63, ROSA P. https://rosap.ntl.bts.gov/view/dot/67837.
The goal of this project was to understand existing data sources to determine which are the most helpful for MnDOT’s planning, programming and design of freight network infrastructure.
Andrusko, A., & Fonseca-Sarmiento, C. (2022). Commodity Flow Data for Freight Network Infrastructure Planning [Technical Summary]. Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/67166
Andrusko, Andrew and Camila Fonseca-Sarmiento. Commodity Flow Data for Freight Network Infrastructure Planning [Technical Summary]. Minnesota. Department of Transportation. Office of Research & Innovation, 2022. https://rosap.ntl.bts.gov/view/dot/67166.
Andrusko, Andrew, and Camila Fonseca-Sarmiento Commodity Flow Data for Freight Network Infrastructure Planning [Technical Summary]. Minnesota. Department of Transportation. Office of Research & Innovation, 2022, ROSA P. https://rosap.ntl.bts.gov/view/dot/67166.
Incorporating bacteria into concrete has been proposed as a method of mitigating the negative impacts of concrete cracking, and may also lead to increased strength and durability through calcium carbonate precipitation and porosity reductions by the bacteria. This study aimed to increase understanding of the use of microorganisms in concrete by inv
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Burris, L., Hull, N., Acartuk, C., Straathof, J., & Liu, Y. (2022). Analysis of Mitigating Concrete Cracks With Bacteria [Fact Sheet]. Ohio. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/72898
Burris, Lisa, Natalie Hull, Cansu Acartuk, Judith Straathof, and Yijing Liu. Analysis of Mitigating Concrete Cracks With Bacteria [Fact Sheet]. Ohio. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/72898.
Burris, Lisa, et al. Analysis of Mitigating Concrete Cracks With Bacteria [Fact Sheet]. Ohio. Department of Transportation, 2022, ROSA P. https://rosap.ntl.bts.gov/view/dot/72898.
Incorporating bacteria into concrete has been proposed as a method of mitigating the negative impacts of concrete cracking, and may also lead to increased strength and durability through calcium carbonate precipitation and porosity reductions by the bacteria. This study aimed to increase understanding of the use of microorganisms in concrete by inv
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Burris, L., Hull, N., Bundur, B., Acartuk, C., Straathof, J., Liu, Y., & Sandalci, I. (2022). Analysis of Mitigating Concrete Cracks With Bacteria [Report] (Report No. FHWA/OH-2022-29). Ohio. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/72897
Burris, Lisa, Natalie Hull, Basaran Bundur, Cansu Acartuk, Judith Straathof, Yijing Liu, and Ilgin Sandalci. Analysis of Mitigating Concrete Cracks With Bacteria [Report]. Report no. FHWA/OH-2022-29. Ohio. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/72897.
Burris, Lisa, et al. Analysis of Mitigating Concrete Cracks With Bacteria [Report]. Ohio. Department of Transportation, 2022, Report no. FHWA/OH-2022-29, ROSA P. https://rosap.ntl.bts.gov/view/dot/72897.
The first half of this report details the design of a flooding emulation system to evaluate LiDAR-, radar-, and ultrasonic-based devices for monitoring water level rise and measure water flow speed. The second half of the report describes the incorporation of NOAA data with data collected at ODOT weather station to predict the potential of flooding
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Refai, H. H., Mousselli, A., & Zayegh, A. (2022). Flooding Monitoring and Prediction System Development (Report No. FHWA-OK-22-06). Oklahoma. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/67198
Refai, Hazem H., Abdullah Mousselli, and Amer Zayegh. Flooding Monitoring and Prediction System Development. Report no. FHWA-OK-22-06. Oklahoma. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/67198.
Refai, Hazem H., et al. Flooding Monitoring and Prediction System Development. Oklahoma. Department of Transportation, 2022, Report no. FHWA-OK-22-06, ROSA P. https://rosap.ntl.bts.gov/view/dot/67198.
As a durable, economical, and low-maintenance concrete material, roller compacted concrete (RCC) is steadily becoming the preferred choice for many highway pavement applications. However, the current RCC pavement thickness design procedures are solely empirically based, not following the state-of-practice of the mechanistic-empirical (M-E) pavement
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Wu, Z., & Mahdi, M. I. (2022). Application of Mechanistic-Empirical Pavement Design Approach Into RCC Pavement Thickness Design (Report No. FHWA/LA.22/671). Louisiana Transportation Research Center. https://rosap.ntl.bts.gov/view/dot/66310
Wu, Zhong and Moinul I Mahdi. Application of Mechanistic-Empirical Pavement Design Approach Into RCC Pavement Thickness Design. Report no. FHWA/LA.22/671. Louisiana Transportation Research Center, 2022. https://rosap.ntl.bts.gov/view/dot/66310.
Wu, Zhong, and Moinul I Mahdi Application of Mechanistic-Empirical Pavement Design Approach Into RCC Pavement Thickness Design. Louisiana Transportation Research Center, 2022, Report no. FHWA/LA.22/671, ROSA P. https://rosap.ntl.bts.gov/view/dot/66310.
This research project is the first step toward Mechanistic-Empirical (ME) Design implementation for flexible pavements in Florida. The Florida Department of Transportation currently uses the American Association of State Highway and Transportation Officials 93 Method for flexible pavement design and is considering changing to the Pavement ME Design
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Goehl, D. C., & Nyamuhokya, T. (2022). Evaluation of Pavement ME Design Software for Flexible Pavements (Report No. BEA88). Florida Department of Transportation. https://rosap.ntl.bts.gov/view/dot/76693
Goehl, Darlene C and Tito Nyamuhokya. Evaluation of Pavement ME Design Software for Flexible Pavements. Report no. BEA88. Florida Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/76693.
Goehl, Darlene C, and Tito Nyamuhokya Evaluation of Pavement ME Design Software for Flexible Pavements. Florida Department of Transportation, 2022, Report no. BEA88, ROSA P. https://rosap.ntl.bts.gov/view/dot/76693.
Public transit providers in New Hampshire have bus stops, transit amenities, and way finding signage within public highway rights-of-way (ROWs), including state-maintained ROWs. The New Hampshire Department of Transportation (NHDOT) lacked a clear policy or process by which a transit provider seeks and gains approval to implement these facilities a
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Cambridge Systematics, Inc. (2022). Transit Facilities in New Hampshire DOT Rights-of-Way (Report No. FHWA-NH-RD-42372K). New Hampshire Department of Transportation. https://rosap.ntl.bts.gov/view/dot/67854
Cambridge Systematics, Inc.. Transit Facilities in New Hampshire DOT Rights-of-Way. Report no. FHWA-NH-RD-42372K. New Hampshire Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/67854.
Cambridge Systematics, Inc. Transit Facilities in New Hampshire DOT Rights-of-Way. New Hampshire Department of Transportation, 2022, Report no. FHWA-NH-RD-42372K, ROSA P. https://rosap.ntl.bts.gov/view/dot/67854.
Currently, field construction inspectors use a E-Saximeter (E-Sax) to determine the hammer fall of single action diesel hammers when driving pile during bridge construction. The hammer fall measurement is required to calculate the bearing capacity of the installed pile. Inspectors record the hammer fall data by hand and the data is entered into an
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Glennie, N., & Silvey, A. (2022). Pile Driving Saximeter Application for iOS & Android Devices. Nebraska. Department of Transportation. Materials & Research Division. https://rosap.ntl.bts.gov/view/dot/67819
Glennie, Nikolas and Alex Silvey. Pile Driving Saximeter Application for iOS & Android Devices. Nebraska. Department of Transportation. Materials & Research Division, 2022. https://rosap.ntl.bts.gov/view/dot/67819.
Glennie, Nikolas, and Alex Silvey Pile Driving Saximeter Application for iOS & Android Devices. Nebraska. Department of Transportation. Materials & Research Division, 2022, ROSA P. https://rosap.ntl.bts.gov/view/dot/67819.
This Performance-Engineered Concrete Paving Mixtures Transportation Pooled Fund—TPF-5(368)—brought newer concrete pavement technologies to state agencies and assisted states in the adoption of specifications and test methods that will help them deliver on the promise of concrete durability. The Federal Highway Administration (FHWA), 19 state transp
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Gross, J., Weiss, J., Ley, T., Taylor, P., Weitzel, N., Van Dam, T., Smith, G., & Jones, C. (2022). Performance-Engineered Concrete Paving Mixtures (Report No. InTrans Project 17-629). Iowa State University. Institute for Transportation. https://rosap.ntl.bts.gov/view/dot/72265
Gross, Jerod, Jason Weiss, Tyler Ley, Peter Taylor, Nick Weitzel, Tom Van Dam, Gordon Smith, and Cecil Jones. Performance-Engineered Concrete Paving Mixtures. Report no. InTrans Project 17-629. Iowa State University. Institute for Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/72265.
Gross, Jerod, et al. Performance-Engineered Concrete Paving Mixtures. Iowa State University. Institute for Transportation, 2022, Report no. InTrans Project 17-629, ROSA P. https://rosap.ntl.bts.gov/view/dot/72265.
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