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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 7501 - 7520 of 36114 results
  • A Synthesis of Data Management Practices in the Midwestern DOTs
    A Synthesis of Data Management Practices in the Midwestern DOTs
    Adams, Teresa ;
    Hart, Maria
    2017-11-01 | PDF
    This report presents a snapshot of freight data synthesis and management practices at state transportation agencies (DOTs) in the Midwest. The scope of practices includes data architecture and integration, data collaboration, data strategy and governance. Mode categorizes freight datasets and business processes—highway, rail, air, water, and local ...
  • Salt Brine Blending to Optimize Deicing and AntiIcing Performance and Cost Effectiveness Phase III
    Salt Brine Blending to Optimize Deicing and Anti-Icing Performance and Cost Effectiveness : Phase III
    Druschel, Stephen J.
    2017-11-01 | PDF
    An evaluation of deicers and anti-icers and plowing, in parallel conditions on actual pavements to assess intuitions based on observations and anecdotal evidence. - Anti-icer persistence - Deicer effectiveness - Plow effectiveness - Pavement study of anti-icer persistence Factor interaction such as truck traffic plus snow moisture condition, deicer ...
    Supporting Files
  • Dynamic Effects and Friction Values of Bridge Moves for ABC Bridges
    Dynamic Effects and Friction Values of Bridge Moves for ABC Bridges
    Johnson, Kris ;
    Halling, Marvin
    2017-11-01 | PDF
    The effects of Self-Propelled Modular Transport (SPMT) vehicles on pre-cast bridge decks during transportation were investigated as part one of this report. The dynamic responses of SPMTs were investigated during several possible load cases and three actual load cases. Nine accelerometers were attached to a SMPT in different locations facing three ...
  • Vermont Bicycle and Pedestrian Counting Program
    Vermont Bicycle and Pedestrian Counting Program
    Sentoff, Karen ;
    Sullivan, James L.
    2017-11-01 | PDF
    The goals of this project were to create a bicycle and pedestrian count database for the state of Vermont, communicate the state of non-motorized travel statewide, and make recommendations for future data collection and management. The specific objectives of this project were to:1. review best practices in non-motorized count data management and co ...
  • Evaluation of the Effect of Deflection Waveform on Fatigue Test Results for Hot Mix Asphalt
    Evaluation of the Effect of Deflection Waveform on Fatigue Test Results for Hot Mix Asphalt
    Mateos, Angel ;
    Wu, Rongzong
    2017-11-01 | PDF
    An experimental study was conducted to determine the effect of deflection waveform on four-point flexural fatigue test results for hot mix asphalt. Seven asphalt mixtures, comprising a wide variety of gradations, binder types, and binder contents, were selected for this study. Four of the mixes were tested at the University of California Pavement R ...
  • Investigation of Prefabricated SteelTruss Bridge Deck System
    Investigation of Prefabricated Steel-Truss Bridge Deck System
    Fick, Damon ;
    Kuehl, Tyler
    2017-11-01 | PDF
    Steel truss bridges are an efficient and aesthetic option for highway crossings. Their relatively light weight compared with plate girder systems make them a desirable alternative for both material savings and constructability. A prototype of a welded steel truss constructed with an integral concrete deck has been proposed as a potential alternativ ...
    Supporting Files
  • A Driving Simulator Evaluation of Red Arrows and Flashing Yellow Arrows in RightTurn Applications Establishing the Foundation for Future Research
    A Driving Simulator Evaluation of Red Arrows and Flashing Yellow Arrows in Right-Turn Applications : Establishing the Foundation for Future Research
    Knodler, Michael A. ;
    Noyce, David A.
    2017-11-01 | PDF
    Driver understanding of flashing yellow arrow (FYA) indications for left turns has been studiedextensively; however, the use of FYA for right-turn applications is an area that needs to be better understood through evaluations focused on actual driver behavior. Field evaluations, surveys, and driving simulator experiments are some alternatives for s ...
  • Improved Concrete Crosstie and Fastening Systems for US High Speed Passenger Rail and Joint Corridors Volume 1 Project Summary Report
    Improved Concrete Crosstie and Fastening Systems for US High Speed Passenger Rail and Joint Corridors : Volume 1, Project Summary Report
    Edwards, J. Riley ;
    Dersch, Marcus S.
    2017-11-01 | PDF
    Rail corridors often experience a wide variety of passenger and freight train loads, track geometry characteristics, and environmental conditions. These factors must be considered when developing an “optimized” concrete crosstie and fastening system capable of performing under a wide range of service conditions.This project used basic and applied r ...
    Supporting Files
  • Policy Brief What is the Legal Framework for Automated Vehicles in Texas
    Policy Brief: What is the Legal Framework for Automated Vehicles in Texas?
    Stoeltje, Gretchen ;
    Antonio, Alexander J.
    2017-11-01 | PDF
    During the 85th Texas Legislature in 2017, Texas enacted a law related to automated vehicles. The bill, SB 2205, creates the legal framework for automated vehicle operation and testing in Texas. Although this law addresses a number of issues that can help to create a legal foundation for the operation of automated vehicles in Texas, several other l ...
  • Minnesota Local Agency Pavement Marking Mining Existing Data
    Minnesota Local Agency Pavement Marking : Mining Existing Data
    Smadi, Omar G. ;
    Alhasan, Ahmad
    2017-11-01 | PDF
    Pavement marking is important for safety. Maximizing pavement marking performance in terms of increased retroreflectivity, within limited budget constraints, allows agencies to make better decisions toward providing more effective pavement marking performance on their roadway networks. This research project included conducting a survey of local age ...
  • Cost Participation Policy for Detours
    Cost Participation Policy for Detours
    Alwan, Wes ;
    Linsenmayer, Mark
    2017-11-01 | PDF
    The MnDOT Office of Materials and Road Research is interested in determining how state departments of transportation (DOTs) are compensating local governments for damage to local roads during highway detours that route traffic onto local roads. MnDOT is also interested in learning how local governments are compensated for expenses incurred when sta ...
  • Rail Transit
    Rail Transit
    Boarnet, Marlon G. ;
    Bostic, Raphael
    2017-11-01 | PDF
    Rail transit’s association with gentrification has been a presence in the public discourse for some time and Los Angeles is no different. There is a prevailing public perception that Los Angeles' recent boom in rail transit development causes an influx of high income residents and an outflow of low income residents near rail stations. The authors' ...
  • Impacts of Internal Curing on the Performance of Concrete Materials in the Laboratory and the Field
    Impacts of Internal Curing on the Performance of Concrete Materials in the Laboratory and the Field
    Vosoughi, Payam ;
    Taylor, Peter
    2017-11-01 | PDF
    Internal curing is a technique to prolong cement hydration by providing internal water reservoirs in a concrete mixture. These reservoirs do not affect the initial water-to-cementitious materials (w/cm) ratio, but do provide water for curing throughout the thickness of the element. Benefits of this approach include improved mechanical properties as ...
  • Estimating Congestion Benefits of Transportation Projects with FIXiT 20 Updating and Improving the Sketch Planning Tool
    Estimating Congestion Benefits of Transportation Projects with FIXiT 2.0: Updating and Improving the Sketch Planning Tool
    Lasley, Phil ;
    Metsker-Galarza, Madison
    2017-11-01 | PDF
    Transportation agencies face continual pressure to ensure the proper allocation of transportation investments and financial resources. Choosing the right set of congestion mitigation and mobility strategies is critical to ensuring the wise application of these funds. Texas A&M Transportation Institute researchers developed the Future Improvement Ex ...
  • Comparing Properties of Water AbsorbingFiltering Media for BioslopeBioswale Design
    Comparing Properties of Water Absorbing/Filtering Media for Bioslope/Bioswale Design
    Johnson, Kurt W. ;
    Cai, Meijun
    2017-11-01 | PDF
    Drainage from highways, particularly the first flush of runoff, contains high levels of contaminants such as suspended solids, metals, and organics. To restrict the discharge of polluted stormwater, the National Pollutant Discharge Elimination System (NPDES) State Disposal System (SDS) General Permit issued by Minnesota Pollution Control Agency (MP ...
  • BuffaloNiagara Transportation Datawarehouse Prototype and Realtime Incident Detection
    Buffalo-Niagara Transportation Data-warehouse Prototype and Real-time Incident Detection
    Bartlett, Andrew ;
    Sadek, Adel W.
    2017-11-01 | PDF
    In the traffic engineering field, study and analysis often requires the use of multiple datasets. The nature of these data often makes them difficult to work with, especially in conjunction with one another. The overall goal of this study was to not only design a solution to this problem for the Buffalo-Niagara Region of western New York, but to de ...
  • Coaxing HIS Data from Mandli Pavement Scans
    Coaxing HIS Data from Mandli Pavement Scans
    Green, Eric R. ;
    Staats, William
    2017-11-01 | PDF
    The Kentucky Transportation Cabinet (KYTC) Division of Planning’s Highway Information Systems (HIS) database provides geometric information about horizontal and vertical curves, but its accuracy is unknown. An updated method of pavement analysis collects data by scanning the pavement as a van equipped with Mandli software drives the area of interes ...
  • 2017 Kansas and Missouri Departments of Transportation Research Peer Exchange Summary Report Improving the Quality and Timeliness of Research Reports
    2017 Kansas and Missouri Departments of Transportation Research Peer Exchange - Summary Report: Improving the Quality and Timeliness of Research Reports
    Kansas. Dept. of Transportation  ...
    2017-11-01 | PDF
    The transportation research programs at the Kansas and Missouri Departments of Transportation (KDOT, MODOT) hosted a peer exchange to discuss improving the quality and timeliness of research reports. This report documents the discussions, outcomes, and takeaways of the peer exchange participants. The peer exchange participants included staff member ...
  • Pedestrian Safety Treatments for Signalized Intersections Training Course Development
    Pedestrian Safety Treatments for Signalized Intersections : Training Course Development
    Pratt, Michael P.
    2017-11-01 | PDF
    When drivers make left turns during a permissive turn phase, they must yield to pedestrians as well as oncoming through vehicles. Left-turning drivers sometimes overlook pedestrians in the crosswalk while watching the opposing intersection approach. Implementing a protected left-turn phase can reduce or eliminate the potential conflict between pede ...
    Supporting Files
  • The Effects of Subsidies and Mandates A Dynamic Model of the Ethanol Industry
    The Effects of Subsidies and Mandates : A Dynamic Model of the Ethanol Industry
    Lawell, C.-Y. Cynthia Lin ;
    Yi, Fujin
    2017-11-01 | PDF
    This paper analyzes the effects of government subsidies and the Renewable Fuel Standard (RFS) on the U.S. ethanol industry. We first develop a stylized theory model of subsidies in which we examine which types of subsidies are more cost-effective for inducing investment in firm capacity, and how the presence of a mandate affects the relative cost-e ...
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