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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 1321 - 1340 of 35448 results
  • Developing a Performance Evaluation Facility for Sediment Control Devices
    Developing a Performance Evaluation Facility for Sediment Control Devices
    McFalls, Jett ;
    Foster, Derrold
    2023-11-01 | PDF
    The U.S. Environmental Protection Agency requires efforts to reduce the amount of sediment generated (i.e., erosion control) and the off-site transport of sediment and construction-related chemicals (i.e., sediment and chemical control) at all construction sites. Sediment from construction sites represents the largest pollutant source among several ...
  • Evaluating Benefits of Stratifying Cost of Injuries by Severity in CDOT BenefitCostAnalysis
    Evaluating Benefits of Stratifying Cost of Injuries by Severity in CDOT Benefit-Cost-Analysis
    McCarthy, Gillian ;
    Kononov, Jake
    2023-11-01 | PDF
    The aim of this study was to investigate whether stratifying the degree of injury by severity and assigning specific dollar costs to each severity level would enhance the quality of project selection. The results strongly suggest a distinction between a composite and a stratified approach in allocating injury crash costs within a Benefit Cost Analy ...
  • Determining the Effect on Asphalt Mixture Performance by Increasing New Asphalt Binder Content Due to Inactive RAP Binder in the Mixture
    Determining the Effect on Asphalt Mixture Performance by Increasing New Asphalt Binder Content Due to Inactive RAP Binder in the Mixture
    Yin, Fan ;
    Taylor, Adam
    2023-11-01 | PDF
    The project aimed to determine the impact of adding additional virgin binders in consideration of recycled binder availability (RBA) on the performance of asphalt mixtures containing reclaimed asphalt pavements (RAP). To that end, a literature review was first conducted to select a suitable RBA value (i.e., 80%) for RBA mixtures in Florida, followe ...
  • Utilizing Steel Fiber Reinforced Concrete as a Substitute Reinforcement for CIPPCP Bridge Deck
    Utilizing Steel Fiber Reinforced Concrete as a Substitute Reinforcement for CIP-PCP Bridge Deck
    Jeong, Soon Kwang ;
    Jang, Hansol
    2023-11-01 | PDF
    This research focuses on optimizing the design of cast-in-place, precast-panel (CIP-PCP) bridge decks by developing recommendations for standard ready-mix steel fiber reinforced concrete (SFRC) using domestically produced steel fibers. The project, stemming from the efficient and durable nature of CIP-PCP decks, builds upon prior work at the Univer ...
  • US191MT64 Wildlife Transportation Assessment
    US-191/MT-64 Wildlife & Transportation Assessment
    Fairbank, Elizabeth R. ;
    Penrod, Kristeen
    2023-11-01 | PDF
    The US Highway 191 (US-191)/Montana Highway 64 (MT-64) Wildlife & Transportation Assessment (the “Assessment”) improves understanding of the issues affecting driver safety, wildlife mortality, and wildlife movement along the major routes that connect Yellowstone National Park, the Custer Gallatin National Forest, and other public lands to the growi ...
  • Highway Safety Culture Assessment through Louisianas Regions
    Highway Safety Culture Assessment through Louisiana’s Regions
    Schneider, Helmut ;
    Smith, Scott
    2023-11-01 | PDF
    Human behavior and errors in human judgment account for a large proportion of roadway crashes in the United States. Most priorities in Louisiana’s Strategic Highway Safety Plan involve human behavior. A comprehensive understanding of highway safety culture throughout Louisiana’s regions will enhance the state’s public outreach and education efforts ...
  • Evaluation of NearMiss Crashes Using a VideoBased Tool
    Evaluation of Near-Miss Crashes Using a Video-Based Tool
    Kondyli, Alexandra ;
    Schrock, Steven D.
    2023-11-01 | PDF
    This research investigated the prediction accuracy of a video-based tool developed by Transoft Solutions for predicting near-miss crashes at signalized intersections. The research team selected two signalized intersections in Overland Park, Kansas, and collected two weeks of video data from both locations. Only weekday data were collected for the t ...
  • Safety and Traffic Operations at Cloverleaf Interchanges Project Capsules
    Safety and Traffic Operations at Cloverleaf Interchanges [Project Capsules]
    Hassan, Hany ;
    Rupnow, Tyson
    2023-11-01 | PDF
    The efficient operation of highway interchanges is critical for the creation of an effective highway system designed to transport large numbers of cars quickly and safely over long distances. In this regard, the diamond interchange is the most common type of roadway interchanges where a major highway intersects a minor facility. It is suited for bo ...
  • Forecasting Shifts in Hoosiers Travel Demand and Behavior
    Forecasting Shifts in Hoosiers’ Travel Demand and Behavior
    Verma, Rajat ;
    Luo, Hao
    2023-11-01 | PDF
    The changing landscape of transportation technology and traveler behavior, accelerated by recent events like COVID-19, has led to significant shifts in travel demand and vehicle miles traveled in Indiana. This study seeks to understand the long-term implications of these changes and their potential impact on passenger, freight, and micro-mobility m ...
  • Development of LatitudeLongitude and RouteMilepost Positioning Traffic Management Cameras
    Development of Latitude/Longitude (and Route/Milepost) Positioning Traffic Management Cameras
    Mathew, Jijo K ;
    Malackowski, Haydn A
    2023-11-01 | PDF
    Traffic Incident Management (TIM) is a FHWA Every Day Counts initiative with the objective of reducing secondary crashes, improving travel reliability, and ensuring the safety of responders. Agency roadside cameras play a critical role in TIM by helping dispatchers quickly identify the precise location of incidents when receiving reports from motor ...
  • Develop Bridge WeighinMotion Approach To Measure Live Loads on Texas Highways Technical Report
    Develop Bridge Weigh-in-Motion Approach To Measure Live Loads on Texas Highways: Technical Report
    Yarnold, Matthew ;
    Shi, Shengyi
    2023-11-01 | PDF
    This research study developed and quantitatively evaluated the concept of Bridge Weigh-In-Motion (B-WIM) for future application on Texas highways. The primary objective of B-WIM systems is to instrument a bridge to obtain the axle information (i.e., weights, number, speed, and spacings) and weight information (i.e., axles and gross) of trucks that ...
  • 2022 MnROAD Construction Activities
    2022 MnROAD Construction Activities
    Bautista, Emil G. ;
    Wallace, Michael
    2023-11-01 | PDF
    The 2022 construction season at the MnROAD facility saw construction of 39 new and unique pavement test sections and the repairs of 6 existing test sections. These sections were planned and designed by the National Road Research Alliance (NRRA) teams to address high-priority research needs. This report details development, design, and construction ...
  • Validation of Loose Mix Aging Procedures for Cracking Resistance Evaluation in Balanced Mix Design
    Validation of Loose Mix Aging Procedures for Cracking Resistance Evaluation in Balanced Mix Design
    Yin, Fan ;
    Chen, Chen
    2023-11-01 | PDF
    This project aimed to validate loose mix aging procedures for cracking resistance evaluation of asphalt mixtures in balanced mix design (BMD) with a broad range of field projects covering various mixture components, pavement ages, and climatic conditions. To that end, a two-phase research approach was followed, with Phase I focusing on a literature ...
  • Vulnerable Road User VRU Safety Assessment
    Vulnerable Road User (VRU) Safety Assessment
    Sun, Carlos ;
    Brown, Henry
    2023-11-01 | PDF
    Vulnerable Road Users (VRUs) are nonmotorized road users, such as pedestrians and bicyclists, who do not have the protection of a vehicle shell. VRU injuries and fatalities have been increasing, leading to various efforts to assess and improve VRU safety. One such state-level effort is the development of a Missouri VRU safety assessment plan. This ...
  • Bridge and Culvert Designs for Reduced WildlifeVehicle Conflicts and Improved Climate Resiliency Phase I
    Bridge and Culvert Designs for Reduced Wildlife-Vehicle Conflicts and Improved Climate Resiliency: Phase I
    Gómez, Alejandra ;
    Maerz, John
    2023-11-01 | PDF
    Wildlife vehicle conflicts (WVC) average over 14,000 crashes and cost more than $850M per year in Georgia (FHWA 2023). Our research team has undertaken a Phase I study to identify opportunities to simultaneously improve road safety, reduce wildlife vehicle conflicts (WVC), effectively ensure water and debris conveyance capacity, enhance ecosystem c ...
  • Division of Engineering Research on Call Agreement 34652 Task 12 Change Detection of Inventoried Landslides Using Remote Sensing Techniques
    Division of Engineering Research on Call, Agreement 34652. Task 12, Change Detection of Inventoried Landslides Using Remote Sensing Techniques
    Bassal, Patrick ;
    Athar, M Faraz
    2023-11-01 | PDF
    This study evaluates the effectiveness of utilizing remotely sensed three-dimensional (3D) spatial data, including Light Detection and Ranging(lidar) and Interferometric Synthetic Aperture Radar (InSAR) for interpreting change detections of eastern Ohio (Districts 5, 10, and 11) landslides. The performance of lidar methods used by specialty firm Te ...
  • Evaluation of Netfree Erosion Control Blankets
    Evaluation of Net-free Erosion Control Blankets
    Bhattarai, Rabin ;
    Zhang, Yufan
    2023-11-01 | PDF
    Erosion control blankets (ECBs) protect soil from being detached and transported by raindrops and subsequential overland runoff while assisting in vegetation growth. ECBs have several characteristics, for example, thickness, mass per unit area, tensile strength, elongation, water absorption, etc. However, the impact of these characteristics on the ...
  • BMP For Issues with Asphalt Centerline Joint and Intelligent Compaction for Local Agencies
    BMP For Issues with Asphalt Centerline Joint and Intelligent Compaction for Local Agencies
    Haider, Syed W. ;
    Muslim, Hamad Bin
    2023-11-01 | PDF
    It is well-known that longitudinal joint construction quality is critical to flexible pavement life. The maintenance activities caused by longitudinal joint deterioration's direct or indirect effects and raveling problems along the centerline paving joint of asphalt roadways have become challenging for many highway agencies. A poorly constructed jo ...
  • Evaluation of NearMiss Crashes Using a VideoBased Tool Summary
    Evaluation of Near-Miss Crashes Using a Video-Based Tool [Summary]
    Kondyli, Alexandra ;
    Schrock, Steven D.
    2023-11-01 | PDF
    This research investigated the prediction accuracy of a video-based tool developed by Transoft Solutions for predicting near-miss crashes at signalized intersections. The research team selected two signalized intersections in Overland Park, Kansas, and collected two weeks of video data from both locations. Only weekday data were collected for the t ...
  • A Synthesis of Economic Impact Assessment of Transit Services
    A Synthesis of Economic Impact Assessment of Transit Services
    Peng, Zhong-Ren ;
    Liu, Yanghe
    2023-11-01 | PDF
    This report provides an in-depth synthesis of the economic impact assessment of transit services in the United States from 2003 to 2023, focusing on Benefit-Cost Analysis (BCA) and Economic Impact Analysis (EIA) methodologies. It examines their application in public transit systems and highlights geographical variations and trends. The report analy ...
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