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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.

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Showing 7081 - 7100 of 36104 results
  • Toll Facilities in the United States Bridges Roads Tunnels Ferries 2018
    Toll Facilities in the United States: Bridges, Roads, Tunnels, Ferries [2018]
    United States. Department of Transportation. Federal Highway Administration
    2018-03-01 | PDF
    This report contains selected information on toll facilities in the United States that has been provided to FHWA by the States and/or various toll authorities regarding toll facilities in operation, financed, or under construction as of January 1, 2017. The report is based on voluntary responses received biennially. Differences and inconsistencies ...
  • ReadytoUse Designs Help Local Agencies Build CostEffective Quality Bridges Research Spotlight
    Ready-to-Use Designs Help Local Agencies Build Cost-Effective, Quality Bridges: Research Spotlight
    Eamon, Christopher D.
    2018-03-01 | PDF
    MDOT has developed four ready-to-use bridge designs to assist counties, cities and villages that face expensive bridge replacement projects. Local agencies and their consultants are being encouraged to review the design guides and templates for the four bridge types, consider life-cycle costs and long-term service projections of the designs, and ta ...
  • Work Zone Crash Performance Data Measurement
    Work Zone Crash Performance Data Measurement
    Mishra, Sabyasachee ;
    Golias, Mihalis M.
    2018-03-01 | PDF
    The objective of this research was to utilize historical and archived crash data, maintained by TDOT, to closely analyze crash patterns in work zones, while considering crash, roadway geometry, environmental and several other characteristics and develop performance metrics for the work zones in Tennessee. The factors have important implications for ...
  • Latent Classes in ResidenceWorkplace Location Choices
    Latent Classes in Residence-Workplace Location Choices
    Mishra, Sabya ;
    Golias, Mihalis
    2018-03-01 | PDF
    This project developed a two-stage modeling framework for analyzing residential and work location choices with probabilistic choice sets. In the first stage, a household (or a worker) was assumed to select a neighborhood (such as central business district, urban, suburban etc.) to live (or work). In the second stage, the household (or worker) was a ...
  • Sustainable Mitigation of Stormwater Runoff Through Fully Permeable Pavement
    Sustainable Mitigation of Stormwater Runoff Through Fully Permeable Pavement
    Ralla, Avinash ;
    Saadeh, Shadi
    2018-03-01 | PDF
    This report presents the implementation of new design method developed using mechanistic-empirical design approach by University of California Pavement Research Center (UCPRC) through building two test sections at California State University Long Beach (CSULB). The study includes a literature review, pavement design procedure, mix design, construct ...
  • High Friction Surface Treatments Transportation Research Synthesis
    High Friction Surface Treatments, Transportation Research Synthesis
    Kline, Christine F. ;
    Mullins, Matt
    2018-03-01 | PDF
    MnDOT and local transportation agencies in Minnesota are considering the use of a high friction surface treatment (HFST) as a safety strategy. HFST is used as a spot pavement surfacing treatment in locations with high friction demand (for example, crash-prone areas such as curves). Using a polish-resistant aggregate that is bonded to the pavement s ...
  • Cooperative Adaptive Cruise Control CACC For Partially Automated Truck Platooning
    Cooperative Adaptive Cruise Control (CACC) For Partially Automated Truck Platooning
    Shladover, Steven E. ;
    Yun, Xiao
    2018-03-01 | PDF
    Cooperative Adaptive Cruise Control (CACC) provides an intermediate step toward a longer-term vision of trucks operating in closely-coupled automated platoons. One distinction between CACC and automated truck platooning is with CACC, only truck speed control will be automated using Vehicle-to-Vehicle communication. The drivers will still be respons ...
  • 2016 Digest of State Laws Driving Under the Influence of Drugs First Edition
    2016 Digest of State Laws: Driving Under the Influence of Drugs, First Edition
    Boddie, Amanda ;
    O’Brien, Audra
    2018-03-01 | PDF
    This digest provides a compendium of State laws that address driving under the influence of drugs (DUI-D). It covers all 50 States, the District of Columbia, and Puerto Rico. It is designed to be an accessible yet comprehensive reference for DUI-D offenses. Three summary charts of State laws are included on basic drugged driving provisions, provisi ...
  • Rapid Transportation Structure Evaluation Toolkit
    Rapid Transportation Structure Evaluation Toolkit
    Riley, Charles E. ;
    Collins, Gregory
    2018-03-01 | PDF
    Bridge condition evaluation to support condition rating, asset management, and post-event response and resiliency efforts is an active and robust area of research. Vibration-based methods are being developed and tested by many research teams with an end product similar to that in this study: an easily deployed, accurate, and economical system to de ...
  • Development of a Rapid Assessment Tool for Pile Capacity and Stability in Response to Scour Situations
    Development of a Rapid Assessment Tool for Pile Capacity and Stability in Response to Scour Situations
    Deng, Yaohua “Jimmy” ;
    Phares, Brent
    2018-03-01 | PDF
    The Iowa Department of Transportation (DOT) rating engineer is sometimes asked by field personnel to make quick decisions regarding pile capacity and stability when scour is identified around bridge pile bents. A numerical evaluation program was developed and implemented to offer a user-friendly assessment tool that can be used to quickly evaluate ...
  • Overview of Performance Based Practical Design
    Overview of Performance Based Practical Design
    Van Dyke, Chris ;
    Jasper, Jeff
    2018-03-01 | PDF
    DOI: https://doi.org/10.13023/KTC.RR.2018.03State transportation agencies (STAs) have increasingly turned to practical design and performance based practical design(PBPD) to inform project development and implementation — and to reduce project costs while optimizing systemwide benefits. PBPD is a design-up philosophy that encourages agencies to for ...
  • State Highway 9 Wildlife Crossings Monitoring Year 2 Progress Report
    State Highway 9 Wildlife Crossings Monitoring – Year 2 Progress Report
    Kintsch, Julia ;
    Cramer, Patricia
    2018-03-01 | PDF
    The State Highway 9 (SH 9) Colorado River South Wildlife and Safety Improvement Project in Grand County was designed by the Colorado Department of Transportation (CDOT) and partners to improve motorist safety by reducing wildlife-vehicle collisions (WVC) while providing opportunities for wildlife to move beneath and above SH 9 through wildlife cros ...
  • Are We Hardwiring Gender Differences Into the Plugin Electric Vehicle Market
    Are We Hardwiring Gender Differences Into the Plug-in Electric Vehicle Market?
    Kurani, Kenneth S. ;
    Caperello, Nicolette
    2018-03-01 | PDF
    Evidence from the early market for plug-in electric vehicles (PEVs) indicates fewer were being purchased (or leased) by women than would be expected based on women’s participation in all new vehicle transactions. The ratio of male-to-female applicants for California’s Clean Vehicle Rebate (CVR) averaged approximately three males for every female fr ...
  • High Occupancy Vehicle HOV Detection System Testing
    High Occupancy Vehicle (HOV) Detection System Testing
    Chimba, Deo ;
    Camp, Janey
    2018-03-01 | PDF
    This study supports TDOT’s evaluation of existing HOV lanes as travel-time incentives for promoting carpooling and reducing congestion. While the overall person-moving capacity of the HOV lanes may be slightly higher than the general-purpose lanes, the travel–time incentives for legitimate HOV lanes users have been severely diminished by violators ...
  • Utilization of Connected Vehicle Data to Support Traffic Management Decisions
    Utilization of Connected Vehicle Data to Support Traffic Management Decisions
    Hadi, Mohammed ;
    Xiao, Yan
    2018-03-01 | PDF
    Automated vehicle technology is advancing rapidly, from concept to test vehicles on the streets of American cities. Some of the underlying technologies that enable automation, such as Bluetooth communications and GPS, are already available in many car models, but true connected vehicles (CVs) will use additional technologies to communicate with oth ...
    Supporting Files
  • PTC Radio Desense Mitigation Research Phase 2 Filter Identification and Testing
    PTC Radio Desense Mitigation Research Phase 2: Filter Identification and Testing
    Nast, Thomas ;
    Hall, Thomas
    2018-03-01 | PDF
    The Federal Railroad Administration (FRA) sponsored a project, conducted by the Transportation Technology Center, Inc. (TTCI), to identify and evaluate 220 MHz radio filter technologies that are capable of meeting requirements developed for mitigation of 220 MHz Positive Train Control (PTC) radio desense for locomotives operating on and around the ...
    Supporting Files
  • Data Management Life Cycle Final report
    Data Management Life Cycle, Final report
    Miller, Kristi ;
    Miller, Matthew
    2018-03-01 | PDF
    Transportation inefficiencies cost money, reduce safety, increase pollution-causing emissions, and take time away from people’s lives. The solution is not always to build more roads, create parking spaces, or add more bus routes. Sometimes, the better solution is to do more with the infrastructure we already have, and for that, you need information ...
  • Assessing Changes to Federal and State Law for Megaregion Planning Part 1 Defining Federal Constitutional Powers for Megaregion Planning Recommendations for Transportation Policy
    Assessing Changes to Federal and State Law for Megaregion Planning. Part 1 : Defining Federal Constitutional Powers for Megaregion Planning : Recommendations for Transportation Policy
    Hunn, Alexander ;
    Loftus-Otway, Lisa
    2018-03-01 | PDF
    Federal and state transportation laws form the foundation of domestic transportation policies. However, as currently drafted federal laws are not sufficiently developed to support a megaregion transportation regime and will require a formalized approach to be created so that MPOs and DOTs can scale efforts beyond traditional boundaries. This projec ...
  • Design and Construction of Ultra Thin Overlays as an Alternative to Seal Coats
    Design and Construction of Ultra Thin Overlays as an Alternative to Seal Coats
    Hajj, Ramez ;
    Filonzi, Angelo
    2018-03-01 | PDF
    Friction loss is one of the most critical issues faced by agencies responsible for preserving a pavement structure. There are various methods used for surface treatments including seal coats, slurry seals, and ultra thin asphalt concrete overlays. Ultra thin overlays have increased in popularity due to their lack of noise and improved ride quality, ...
  • NonDestructive Testing and Monitoring of Tunnels with Mobile LIDAR and Thermography SHRP2 Project R06G
    Non-Destructive Testing and Monitoring of Tunnels with Mobile LIDAR and Thermography (SHRP2 – Project R06G)
    Treon, Mark
    2018-03-01 | PDF
    This research project explored technologies and developed procedures for engaging in Non-Destructive Testing (NDT) and monitoring of the tunnels that CDOT manages and operates. This was done through this Strategic Highway Research Program (SHRP2) project. The project occurred from 2015-2018. This project investigated and recommended high-speed non- ...
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