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.
UDOT launched its HOT lane program on I-15 in 2010 and it currently covers 72 miles of I-15. The program charges tolls to drivers of Single-Occupant Vehicles (SOVs) using the HOV lanes as Express Lanes while high-occupancy vehicles use the lanes for free. There are 32 HOT lane agencies in the US and, to date, all of them, including UDOT, rely on st
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Chamberlin, R., & Haghighi, N. (2020). HOT Lane Detection and Management Scan (Report No. UT- 20.01). Utah. Dept. of Transportation. Division of Research. https://rosap.ntl.bts.gov/view/dot/54893
Chamberlin, Robert and Nima Haghighi. HOT Lane Detection and Management Scan. Report no. UT- 20.01. Utah. Dept. of Transportation. Division of Research, 2020. https://rosap.ntl.bts.gov/view/dot/54893.
Chamberlin, Robert, and Nima Haghighi HOT Lane Detection and Management Scan. Utah. Dept. of Transportation. Division of Research, 2020, Report no. UT- 20.01, ROSA P. https://rosap.ntl.bts.gov/view/dot/54893.
The goal of this research is to identify and document the best management practices (BMPs) in state departments of transportation (DOTs) with regard to the structure of traditional (i.e., design–bid–build) project delivery. To achieve this goal, the researchers conducted an extensive literature review, survey, content analysis, and interviews with
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Ashuri, B., Baek, M., Shah, R., & Kingsley, G. (2020). Evaluation of Georgia Department of Transportation Office of Program Delivery Project Management Organizational Structure in Comparison to Other States’ DOT Practices Tier 1: Best Management Practices (BMPs) of Design-Bid-Build Transportation Program (Report No. FHWA-GA-20-1812). Georgia. Department of Transportation. Office of Performance-Based Management & Research. https://rosap.ntl.bts.gov/view/dot/53957
Ashuri, Baabak, Minsoo Baek, Raj Shah, and Gordon Kingsley. Evaluation of Georgia Department of Transportation Office of Program Delivery Project Management Organizational Structure in Comparison to Other States’ DOT Practices Tier 1: Best Management Practices (BMPs) of Design-Bid-Build Transportation Program. Report no. FHWA-GA-20-1812. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2020. https://rosap.ntl.bts.gov/view/dot/53957.
Ashuri, Baabak, et al. Evaluation of Georgia Department of Transportation Office of Program Delivery Project Management Organizational Structure in Comparison to Other States’ DOT Practices Tier 1: Best Management Practices (BMPs) of Design-Bid-Build Transportation Program. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2020, Report no. FHWA-GA-20-1812, ROSA P. https://rosap.ntl.bts.gov/view/dot/53957.
On September 25th, 2018, an FHWA-sponsored EDC-4 “How” Pavement Preservation State Peer-to-Peer Exchange was conducted in Lexington, Kentucky, with one FHWA representative and eight DOT representatives from Kentucky, two from Tennessee, and two from West Virginia. Mr. Larry Galehouse with the National Center for Pavement Preservation and Mr. Larry
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Scofield, L., & Gross, J. (2020). Pavement Preservation How: Kentucky, Tennessee, and West Virginia - EDC-4 Peer-to-Peer Exchanges [techbrief] (Report No. FHWA-HIF-20-001). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/48949
Scofield, Larry and Jerod Gross. Pavement Preservation How: Kentucky, Tennessee, and West Virginia - EDC-4 Peer-to-Peer Exchanges [techbrief]. Report no. FHWA-HIF-20-001. United States. Federal Highway Administration, 2020. https://rosap.ntl.bts.gov/view/dot/48949.
Scofield, Larry, and Jerod Gross Pavement Preservation How: Kentucky, Tennessee, and West Virginia - EDC-4 Peer-to-Peer Exchanges [techbrief]. United States. Federal Highway Administration, 2020, Report no. FHWA-HIF-20-001, ROSA P. https://rosap.ntl.bts.gov/view/dot/48949.
Our project was based on the need to water new roadside installations more efficiently to ensure that the turfgrasses, especially the new salt-tolerant mixes, establish more successfully with a predictable and uniform amount of water during the establishment period. The first objective of this project was to do a preliminary investigation of altern
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Watkins, E., Trappe, J., Moncada, K., Bauer, S., & Reyes, J. (2020). Expanding the Success of Salt-Tolerant Roadside Turfgrasses Through Innovation and Education (Report No. MN 2020-03). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/62206
Watkins, Eric, Jon Trappe, Kristine Moncada, Sam Bauer, and Jonah Reyes. Expanding the Success of Salt-Tolerant Roadside Turfgrasses Through Innovation and Education. Report no. MN 2020-03. Minnesota. Department of Transportation. Office of Research & Innovation, 2020. https://rosap.ntl.bts.gov/view/dot/62206.
Watkins, Eric, et al. Expanding the Success of Salt-Tolerant Roadside Turfgrasses Through Innovation and Education. Minnesota. Department of Transportation. Office of Research & Innovation, 2020, Report no. MN 2020-03, ROSA P. https://rosap.ntl.bts.gov/view/dot/62206.
This report presents the findings associated with an effort to evaluate projects with weak subgrades utilizing the newly developed Equivalent Modulus Analysis (EMA) spreadsheet created by the Louisiana Department of Transportation and Development (DOTD). The EMA spreadsheet was developed to simplify the design process by allowing for easy applicati
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Martinez, M. (2020). Field Validation of Equivalent Modulus for Stabilized Subgrade Layer (Report No. FHWA/LA.18/613). Louisiana Transportation Research Center. https://rosap.ntl.bts.gov/view/dot/65578
Martinez, Mark. Field Validation of Equivalent Modulus for Stabilized Subgrade Layer. Report no. FHWA/LA.18/613. Louisiana Transportation Research Center, 2020. https://rosap.ntl.bts.gov/view/dot/65578.
Martinez, Mark Field Validation of Equivalent Modulus for Stabilized Subgrade Layer. Louisiana Transportation Research Center, 2020, Report no. FHWA/LA.18/613, ROSA P. https://rosap.ntl.bts.gov/view/dot/65578.
This project was undertaken to identify the appropriate accelerated laboratory testing procedures and conditions for predicting weathering deterioration of coating materials for steel structures and retroreflective sign sheeting materials for traffic control. The current standard test methods specified by state transportation departments, FHWA, and
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Elsafty, A., & Hsuan, Y. (. (2020). Accelerated Weathering of Traffic Control Materials by Laboratory Testing. University of North Florida. https://rosap.ntl.bts.gov/view/dot/56094
Elsafty, Adel and Yick (Grace) Hsuan. Accelerated Weathering of Traffic Control Materials by Laboratory Testing. University of North Florida, 2020. https://rosap.ntl.bts.gov/view/dot/56094.
Elsafty, Adel, and Yick (Grace) Hsuan Accelerated Weathering of Traffic Control Materials by Laboratory Testing. University of North Florida, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/56094.
The Regional Transportation Management Center (RTMC) at the Minnesota Department of Transportation (MnDOT) deploys a large number of traffic detectors in the Twin Cities’ freeway network and continuously collects traffic data. While RTMC mainly uses the data for traffic and incident management, the TFA (Traffic Forecasting and Analysis) office uses
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Kwon, T. M. (2020). Improve Traffic Volume Estimates From MnDOT’s Regional Traffic Management Center (Report No. MN 2020-02). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/62219
Kwon, Taek M.. Improve Traffic Volume Estimates From MnDOT’s Regional Traffic Management Center. Report no. MN 2020-02. Minnesota. Department of Transportation. Office of Research & Innovation, 2020. https://rosap.ntl.bts.gov/view/dot/62219.
Kwon, Taek M. Improve Traffic Volume Estimates From MnDOT’s Regional Traffic Management Center. Minnesota. Department of Transportation. Office of Research & Innovation, 2020, Report no. MN 2020-02, ROSA P. https://rosap.ntl.bts.gov/view/dot/62219.
This study explores the communication and coordination practices between project team members contributing to the Plan Development Process of the Georgia Department of Transportation (GDOT). This study builds on Phase I of this project, published as GDOT Report No. FHWA-GA-17-1506. The overarching goal of this research is to improve quality and eff
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Kingsley, G., Weber, J., Matisoff, D., Rogers, J., Ashuri, B., Mistur, E., Siangjaeo, S., Prevost, A., Brown, D., Agnew, D., & Bleckley, C. (2020). Strategies for Communicating Quality Expectations for Environmental Service Contracts: Phase II (Report No. FHWA-GA-20-1703). Georgia. Department of Transportation. Office of Performance-Based Management & Research. https://rosap.ntl.bts.gov/view/dot/53895
Kingsley, Gordon, Johann Weber, Dan Matisoff, Juan Rogers, Baabak Ashuri, Evan Mistur, and Sorawit Siangjaeo, et al.. Strategies for Communicating Quality Expectations for Environmental Service Contracts: Phase II. Report no. FHWA-GA-20-1703. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2020. https://rosap.ntl.bts.gov/view/dot/53895.
Kingsley, Gordon, et al. Strategies for Communicating Quality Expectations for Environmental Service Contracts: Phase II. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2020, Report no. FHWA-GA-20-1703, ROSA P. https://rosap.ntl.bts.gov/view/dot/53895.
This report presents the results of a series of triaxial tests and modified box tests performed on abraded ballast at the University of Massachusetts Amherst. While Phase I involved the same tests performed on highly angular ballast, this phase is broken into two parts: Phase IIa and IIb. Both parts use ballast taken from a rail line in Shelburne F
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Rohrman, A. K., Ho, C. L., Kashani, H. F., & Hyslip, J. P. (2020). Laboratory Study of the Failure Characteristics of Fouled Ballast: Phase II (Report No. DOT/FRA/ORD-20/04). United States. Department of Transportation. Federal Railroad Administration. https://rosap.ntl.bts.gov/view/dot/44124
Rohrman, Andrew K., Carlton L. Ho, Hamed F. Kashani, and James P. Hyslip. Laboratory Study of the Failure Characteristics of Fouled Ballast: Phase II. Report no. DOT/FRA/ORD-20/04. United States. Department of Transportation. Federal Railroad Administration, 2020. https://rosap.ntl.bts.gov/view/dot/44124.
Rohrman, Andrew K., et al. Laboratory Study of the Failure Characteristics of Fouled Ballast: Phase II. United States. Department of Transportation. Federal Railroad Administration, 2020, Report no. DOT/FRA/ORD-20/04, ROSA P. https://rosap.ntl.bts.gov/view/dot/44124.
Significant mortality from White-nose Syndrome (WNS) has made northern long-eared bats a management priority while simultaneously creating uncertainty around where the species remains prevalent on the landscape. The culmination of these factors results in the need to develop distinct habitat associations for northern long-eared bats in north Georgi
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Castleberry, S. B., & Hepinstall-Cymerman, J. (2020). Determining the Distribution and Habitat Associations of the Northern Long-Eared Bat in North Georgia (Report No. FHWA-GA-20-1331). Georgia. Department of Transportation. Office of Performance-Based Management & Research. https://rosap.ntl.bts.gov/view/dot/53884
Castleberry, Steven B and Jeffrey Hepinstall-Cymerman. Determining the Distribution and Habitat Associations of the Northern Long-Eared Bat in North Georgia. Report no. FHWA-GA-20-1331. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2020. https://rosap.ntl.bts.gov/view/dot/53884.
Castleberry, Steven B, and Jeffrey Hepinstall-Cymerman Determining the Distribution and Habitat Associations of the Northern Long-Eared Bat in North Georgia. Georgia. Department of Transportation. Office of Performance-Based Management & Research, 2020, Report no. FHWA-GA-20-1331, ROSA P. https://rosap.ntl.bts.gov/view/dot/53884.
Minnesota. Department of Transportation. Local Road Research Board
2020-02-01
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Congestion of utility lines within rights-of-way has become a challenge for Minnesota local transportation agencies. This guidebook addresses common issues and needs faced by agencies, and shares accepted best practices for planning and installing utility services that can help agencies better manage utility requests and needs. This guide provides
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Minnesota. Department of Transportation. Local Road Research Board (2020). Best Practices for Managing Utility Congestion Within Rights-of-Way (Report No. 2019RIC20G). Minnesota. Department of Transportation. Local Road Research Board. https://rosap.ntl.bts.gov/view/dot/62207
Minnesota. Department of Transportation. Local Road Research Board. Best Practices for Managing Utility Congestion Within Rights-of-Way. Report no. 2019RIC20G. Minnesota. Department of Transportation. Local Road Research Board, 2020. https://rosap.ntl.bts.gov/view/dot/62207.
Minnesota. Department of Transportation. Local Road Research Board Best Practices for Managing Utility Congestion Within Rights-of-Way. Minnesota. Department of Transportation. Local Road Research Board, 2020, Report no. 2019RIC20G, ROSA P. https://rosap.ntl.bts.gov/view/dot/62207.
Bridge girders in the U.S. are commonly constructed using multistrand post-tensioned (PT) tendons. Defective grout has been found in some of recently constructed bridges in the form of soft grout, which consists of segregated and unhardened grout with free moisture and is often the cause of corrosion of prestressing strands. To address this problem
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Hamilton, H., Patil, S. R., & Torres, E. (2020). Evaluation of Techniques to Remove Defective Grout from Post-Tensioning Tendons. University of Florida. Department of Civil and Coastal Engineering. https://rosap.ntl.bts.gov/view/dot/54625
Hamilton, H.R., Satyajeet R Patil, and Eduardo Torres. Evaluation of Techniques to Remove Defective Grout from Post-Tensioning Tendons. University of Florida. Department of Civil and Coastal Engineering, 2020. https://rosap.ntl.bts.gov/view/dot/54625.
Hamilton, H.R., et al. Evaluation of Techniques to Remove Defective Grout from Post-Tensioning Tendons. University of Florida. Department of Civil and Coastal Engineering, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/54625.
Due to the inadequate knowledge of the soil forming histories and/or human activities, the subsurface soil layers are difficult to ascertain. Subsurface uncertainty and its influence on geotechnical design have long been a challenge facing practitioners. Recently, the ASCE Geo-institute has developed the Data Interchange for Geotechnical and Geoenv
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Wang, H., Wang, X., & Liang, R. (2020). Study of AI Based Methods for Characterization of Geotechnical Site Investigation Data (Report No. FHWA/OH-2020-3). Ohio. Department of Transportation. Office of Statewide Planning and Research. https://rosap.ntl.bts.gov/view/dot/59022
Wang, Hui, Xiangrong Wang, and Robert Liang. Study of AI Based Methods for Characterization of Geotechnical Site Investigation Data. Report no. FHWA/OH-2020-3. Ohio. Department of Transportation. Office of Statewide Planning and Research, 2020. https://rosap.ntl.bts.gov/view/dot/59022.
Wang, Hui, et al. Study of AI Based Methods for Characterization of Geotechnical Site Investigation Data. Ohio. Department of Transportation. Office of Statewide Planning and Research, 2020, Report no. FHWA/OH-2020-3, ROSA P. https://rosap.ntl.bts.gov/view/dot/59022.
Parapet wall deterioration concerns the Ohio Department of Transportation. The spalling of parapet walls presents a danger to the traveling public as pieces of deteriorated concrete may fall onto the road below. The current repair method is to chip off the weakened concrete using pneumatic chipping hammers. However, this process not only damages th
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Miller, R., Delatte, N. J., Deshpande, A., Hartell, J. A., Mullins, S., & Karunaratne, E. (2020). Evaluation of Maintenance Procedures for Bridge Spalling on Parapet Walls (Report No. FHWA/OH-2020-13). Ohio. Dept. of Transportation. Office of Statewide Planning and Research. https://rosap.ntl.bts.gov/view/dot/55962
Miller, Richard, Norbert J. Delatte, Abhijeet Deshpande, Julie Ann Hartell, Sarah Mullins, and Evan Karunaratne. Evaluation of Maintenance Procedures for Bridge Spalling on Parapet Walls. Report no. FHWA/OH-2020-13. Ohio. Dept. of Transportation. Office of Statewide Planning and Research, 2020. https://rosap.ntl.bts.gov/view/dot/55962.
Miller, Richard, et al. Evaluation of Maintenance Procedures for Bridge Spalling on Parapet Walls. Ohio. Dept. of Transportation. Office of Statewide Planning and Research, 2020, Report no. FHWA/OH-2020-13, ROSA P. https://rosap.ntl.bts.gov/view/dot/55962.
Developing a reliable in-situ testing method to determine the strength of concrete for traffic opening is a critical need for INDOT, due to the fast-pace construction schedule exposes concrete pavements and/or structures undergoing a substantial loading conditions even at its early ages. Nevertheless, the current methods for determining traffic ope
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Su, Y. F., Han, G., & Lu, N. (. (2020). Determining the Optimal Traffic Opening Timing Through an In-Situ NDT Method for Concrete Early Age Properties (Report No. FHWA/IN/JTRP-2020/02). Purdue University. Joint Transportation Research Program. https://doi.org/10.5703/1288284317113
Su, Yen-Fang, Guangshuai Han, and Na (Luna) Lu. Determining the Optimal Traffic Opening Timing Through an In-Situ NDT Method for Concrete Early Age Properties. Report no. FHWA/IN/JTRP-2020/02. Purdue University. Joint Transportation Research Program, 2020. https://doi.org/10.5703/1288284317113.
Su, Yen-Fang, et al. Determining the Optimal Traffic Opening Timing Through an In-Situ NDT Method for Concrete Early Age Properties. Purdue University. Joint Transportation Research Program, 2020, Report no. FHWA/IN/JTRP-2020/02, ROSA P. https://doi.org/10.5703/1288284317113.
An unbonded portland cement concrete overlay of concrete pavements (UBOL) is a rehabilitation technique in which the new overlay is isolated from the existing distressed pavement using a separator layer. Typically, a 1-to 2-in asphalt separator layer (or interlayer) is used. Recent innovations in the unbonded overlay technology have led to the adop
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Khazanovich, L., Vandenbossche, J., DeSantis, J., & Sachs, S. (2020). Development of an Improved Design Procedure for Unbonded Concrete Overlays (Report No. MN 2020-08). Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation. https://rosap.ntl.bts.gov/view/dot/53552
Khazanovich, Lev, Julie Vandenbossche, John DeSantis, and Steve Sachs. Development of an Improved Design Procedure for Unbonded Concrete Overlays. Report no. MN 2020-08. Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation, 2020. https://rosap.ntl.bts.gov/view/dot/53552.
Khazanovich, Lev, et al. Development of an Improved Design Procedure for Unbonded Concrete Overlays. Minnesota. Dept. of Transportation. Office of Policy Analysis, Research & Innovation, 2020, Report no. MN 2020-08, ROSA P. https://rosap.ntl.bts.gov/view/dot/53552.
Colorado Department of Transportation (CDOT) has dynamic modulus (E*), and flow number (N) database of different mixes from different regions of Colorado. The sensitivities of these mixes considering factors such as mix types, aggregates source, volumetric properties, contractors, preparation times, binders, etc. on E*, and N, and on the pavement p
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Islam, M. R., & Kalevela, S. A. (2020). Sensitivity of Dynamic Modulus and Flow Number of CDOT HMA Mixes in the Pavement Mechanistic-Empirical Design (PMED) (Report No. CDOT-2020-01). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/54759
Islam, Md Rashadul and Sylvester A. Kalevela. Sensitivity of Dynamic Modulus and Flow Number of CDOT HMA Mixes in the Pavement Mechanistic-Empirical Design (PMED). Report no. CDOT-2020-01. Colorado Department of Transportation. Applied Research & Innovations Branch, 2020. https://rosap.ntl.bts.gov/view/dot/54759.
Islam, Md Rashadul, and Sylvester A. Kalevela Sensitivity of Dynamic Modulus and Flow Number of CDOT HMA Mixes in the Pavement Mechanistic-Empirical Design (PMED). Colorado Department of Transportation. Applied Research & Innovations Branch, 2020, Report no. CDOT-2020-01, ROSA P. https://rosap.ntl.bts.gov/view/dot/54759.
The objective of this research was to provide the Tennessee Department of Transportation (TDOT) an evaluation on the performance of an autonomous truck mounted attenuator (ATMA) system(s), based on previous relevant research projects and on actual testing of the equipment during a demonstration pilot. A set of testing scenarios were developed in cl
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Kohls, A. G. (2020). Autonomous Truck Mounted Attenuator (ATMA) Pilot (Report No. RES 2019-15). Tennessee. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/56277
Kohls, Airton G. Autonomous Truck Mounted Attenuator (ATMA) Pilot. Report no. RES 2019-15. Tennessee. Department of Transportation, 2020. https://rosap.ntl.bts.gov/view/dot/56277.
Kohls, Airton G Autonomous Truck Mounted Attenuator (ATMA) Pilot. Tennessee. Department of Transportation, 2020, Report no. RES 2019-15, ROSA P. https://rosap.ntl.bts.gov/view/dot/56277.
Freight Intermodal Connectors (FICs), which are also known as “first mile/last mile roadways”, are roadway segments that link freight logistic hubs or freight-intensive land uses to main freight routes. This project focused on segments, corridors and intersections that connect Tennessee freight trucks to/from the major freeways from/to high‐priorit
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Chimba, D. (2020). Evaluating Freight Intermodal Connectors (FICs) in Tennessee (Report No. RES2016-35). Tennessee. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/56268
Chimba, Deo. Evaluating Freight Intermodal Connectors (FICs) in Tennessee. Report no. RES2016-35. Tennessee. Department of Transportation, 2020. https://rosap.ntl.bts.gov/view/dot/56268.
Chimba, Deo Evaluating Freight Intermodal Connectors (FICs) in Tennessee. Tennessee. Department of Transportation, 2020, Report no. RES2016-35, ROSA P. https://rosap.ntl.bts.gov/view/dot/56268.
The objective of the project was to produce a prototype instrument and software analysis system for conducting geophysical characterization of subsurface conditions from within a single borehole. In Task 1, Borehole Instrument, two piezoelectric sources were constructed, the first using high frequency piezocylinders and the second using a barrel st
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Hiltunen, D. R., & Zou, J. (2020). Implementation of Down-Hole Geophysical Testing For Rock Sockets. University of Florida. Department of Civil and Coastal Engineering. https://rosap.ntl.bts.gov/view/dot/50047
Hiltunen, Dennis R. and Jian Zou. Implementation of Down-Hole Geophysical Testing For Rock Sockets. University of Florida. Department of Civil and Coastal Engineering, 2020. https://rosap.ntl.bts.gov/view/dot/50047.
Hiltunen, Dennis R., and Jian Zou Implementation of Down-Hole Geophysical Testing For Rock Sockets. University of Florida. Department of Civil and Coastal Engineering, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/50047.
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