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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 1861 - 1880 of 36873 results
  • Develop a Methodology for Pavement Drainage System Rating Technical Summary
    Develop a Methodology for Pavement Drainage System Rating [Technical Summary]
    Chen, Qiming ;
    Liu, Jun
    2024-01-01 | PDF
    The objective of this study was to explore the use of existing DOTD Pavement Management System (PMS) and Light Detection and Ranging (LiDAR) data to develop a pavement drainage condition rating index for Louisiana, with the goal of integrating drainage evaluation into the Pavement Management System (PMS) as part of the overall pavement condition as ...
  • Evaluation of Seismic Deformation Analysis Approaches for Bridge Embankments
    Evaluation of Seismic Deformation Analysis Approaches for Bridge Embankments
    Armstrong, Richard
    2024-01-01 | PDF
    In this study, nonlinear deformation analyses (NDA) and equivalent-static analyses (ESA) approaches were evaluated for a model bridge embankment that was underlain by a non-liquefiable crust layer, a liquefiable medium dense sand layer, and a non-liquefiable deep dense sand layer. The embankment and underlying ground conditions were selected to rep ...
  • Utilizing Video Analytics With Connected Vehicles for Improved Safety Research Report
    Utilizing Video Analytics With Connected Vehicles for Improved Safety – Research Report
    Good, Amanda ;
    Butler, Sarah
    2024-01-01 | PDF
    Focus of this research was to assess the current capabilities of video analytics within the market and to validate the potential value for implementing the systems in Michigan. Multiple video analytic vendors partnered to demonstrate the technology in predefined use cases at a specific location in southeast Detroit. The data results implied the tec ...
  • Confinement Effect of Narrow Baseplates or Reaction Area on Anchor Breakout Part 3
    Confinement Effect of Narrow Baseplates or Reaction Area on Anchor Breakout, Part 3
    Suksawang, Nakin ;
    Nolan, Steven
    2024-01-01 | PDF
    The AASHTO Committee on Bridges and Structures has approved the updated ACI CODE-318, 2019 edition (ACI CODE 318-19,) into the 10th edition of the AASHTO LRFD Bridge Design Specifications. This would allow the adoption of screw anchor designs that benefit from rapid, reliable, and simplified installation procedures. However, the ACI CODE approach h ...
  • Hydrologic Approaches to Playa Lakes Areas of Significant Karst Geology and Arid Regions Synthesis of Current State of Knowledge and Practice
    Hydrologic Approaches to Playa Lakes, Areas of Significant Karst Geology, and Arid Regions (Synthesis of Current State of Knowledge and Practice)
    Ahmari, Habib ;
    Baharvand, Saman
    2024-01-01 | PDF
    Playa lakes, arid regions, and karst terrains constitute important geographic and hydrological features across Texas, each presenting unique challenges due to their complex and varied hydrology. Currently, there are no uniform guidelines or standards for the hydrological and hydraulic design of transportation infrastructure in these landscapes, lea ...
  • WebBased Tool To Advance Geotechnical Data Interchange and ReliabilityBased Site Characterization Research Project Capsule 242GT
    Web-Based Tool To Advance Geotechnical Data Interchange and Reliability-Based Site Characterization: Research Project Capsule [24-2GT]
    Gautreau, Gavin P. ;
    Rupnow, Tyson
    2024-01-01 | PDF
    This research will focus on innovative practices to improve geotechnical data management, highlighting the development and implementation of a web-based platform to efficiently visualize and interpret geotechnical data, and to eventually facilitate project delivery. A web-based platform can incorporate multiple types of geotechnical and geoenvironm ...
  • Understanding Aggressive Driving and Ways to Reduce It Phase 1
    Understanding Aggressive Driving and Ways to Reduce It - Phase 1
    Finley, Kari ;
    Hanson, Bridget
    2024-01-01 | PDF
    How aggressive driving is defined, what factors precipitate such behavior, and what strategies effectively prevent and reduce the incidence of aggressive driving behavior are not widely understood. The proposed research sought to address these gaps through a two-phase project. The purpose of this project was to support work in Phase 1. A literature ...
  • Improved Signalized Intersection Performance Using Computer Vision and Artificial Intelligence Research Project Capsule 244SS
    Improved Signalized Intersection Performance Using Computer Vision and Artificial Intelligence: Research Project Capsule [24-4SS]
    Moomen, Milhan ;
    Rupnow, Tyson
    2024-01-01 | PDF
    The primary objectives of this research are to: • Assess the feasibility and accuracy of using computer vision technology for performance evaluation at signalized intersections. • Provide intersection video footage data captured by drones. • Use computer vision and artificial intelligence to automatically convert data from video recordings at selec ...
  • Development of Traffic Video Analysis Tool for Highway Safety Performance Evaluation
    Development of Traffic Video Analysis Tool for Highway Safety Performance Evaluation
    Zhou, Huaguo ;
    Zhao, Zijie
    2024-01-01 | PDF
    Recent advances in computer vision techniques have enabled the use of traffic video data for valuable surrogate safety measures to improve highway safety evaluations. However, few tools specifically target abnormal traffic events like wrong-way driving (WWD) or illegal left turns. This research aims to develop a cost-effective video analytic tool, ...
  • A Preliminary Cost Estimating Model for Transportation Projects
    A Preliminary Cost Estimating Model for Transportation Projects
    Piratla, Kalyan R. ;
    Le, Tuyen
    2024-01-01 | PDF
    As with any state highway agency (SHA), the construction needs exceed the budget limitations, which mandates that SCDOT prioritizes transportation project needs based on benefit/cost considerations. It is important to use every penny as wisely as possible. In such context, an early-stage cost estimate is imperative for evaluating the feasibility of ...
  • Development of IntegralSemiIntegral Abutments for TxDOT Bridges Project Summary Project
    Development of Integral/Semi-Integral Abutments for TxDOT Bridges [Project Summary Project]
    Zornberg, Jorge G. ;
    Mofarraj, Behdad
    2023-12-31 | PDF
    This study includes an initial comprehensive evaluation of the state-of-the-practice in the US regarding the adoption of integral and semi-integral bridges. It also involved a large-scale experimental study focusing on the effect of cyclic movements on the potential buildup of lateral earth pressures acting on the backwalls of a semi-integral bridg ...
  • Use of Rapid Setting Hydraulic Cements RSHCs for Structural Applications Project Summary
    Use of Rapid Setting Hydraulic Cements (RSHCs) for Structural Applications [Project Summary]
    Torres, Anthony ;
    Aguayo, Federico
    2023-12-31 | PDF
    This study showed that RSHC concrete can be designed to meet structural class specifications in terms of fresh (i.e., workability and working time) and hardened properties (early- and/or later-age strength). However, information is still needed to fully understand their performance in various durability-related distresses. In particular, more work ...
  • Implementation of Understanding the Impact of Autonomous Vehicles on LongDistance Travel Mode and Destination Choice in Texas Project Summary
    Implementation of Understanding the Impact of Autonomous Vehicles on Long-Distance Travel Mode and Destination Choice in Texas [Project Summary]
    Kockelman, Kara ;
    Vellimana, Maithreyi
    2023-12-31 | PDF
    As privately owned and shared autonomous vehicles (AVs and SAVs) and automated trucks (ATrucks) become available, TxDOT and partner agencies must anticipate their travel, trade, emissions, cost, and other implications. Introducing these modes can significantly alter mode choices for passenger travel and freight and impact traffic volumes and conges ...
  • 07001 Utilizing Steel Fiber Reinforced Concrete as a Substitute Reinforcement for CIPPCP Bridge Deck
    0-7001: Utilizing Steel Fiber Reinforced Concrete as a Substitute Reinforcement for CIP-PCP Bridge Deck
    Bayrak, Oguzhan ;
    Jeong, Soon Kwang
    2023-12-31 | 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 ...
  • Development of a New Tool for Evaluating Infrastructure and Planning Impacts Related to Changes in Truck Traffic and Truck Technologies Project Summary
    Development of a New Tool for Evaluating Infrastructure and Planning Impacts Related to Changes in Truck Traffic and Truck Technologies [Project Summary]
    Morgan, Curtis ;
    Birgisson, Bjorn
    2023-12-31 | PDF
    This project builds on the findings of Texas Department of Transportation (TxDOT) Project 0-6984, Evaluate Potential Impacts, Benefits, Impediments, and Solutions of Automated Trucks and Truck Platooning on Texas Highway Infrastructure, completed by the Texas A&M Transportation Institute in 2020.
  • Evaluation of Bridge Deck Winter Weather Warning Systems
    Evaluation of Bridge Deck Winter Weather Warning Systems
    Gates, Timothy J. ;
    Keshari, Sagar
    2023-12-22 | PDF
    Warning signs are typically deployed at bridges to warn motorists of potential icy surface conditions on the bridge, although the effectiveness of these signs is questionable. One potential improvement is the bridge deck warning system (BDWS), which activates a flashing warning sign border or beacon based on real-time weather and bridge surface dat ...
  • Development of a Maintenance Prioritization Assessment and Safety Tool
    Development of a Maintenance Prioritization Assessment and Safety Tool
    Swanston, Travis ;
    Soltani, Iman
    2023-12-14 | PDF
    Highway construction and maintenance work is one of the most hazardous occupations in the United States. In 2018, more than 7,000 work-zone collisions occurred on California roadways, about 2,300 resulting in injuries, and 46 involving fatalities. This research helped move toward reducing those numbers. The California Department of Transportation ( ...
  • Quantitative Performance Measures for the Caltrans System Investment Strategy
    Quantitative Performance Measures for the Caltrans System Investment Strategy
    Chandra, Shailesh ;
    Valencia, Robert
    2023-12-13 | PDF
    This research developed a robust set of quantitative performance metrics, measures, and methodologies to assess project alignment with the Climate Action Plan for Transportation Infrastructure (CAPTI). The literature review included documenting measures and metrics in published reports, peer-reviewed journals, textbooks, and presentations. Subseque ...
  • LowCement Concrete Mixture for Bridge Decks and Rails
    Low-Cement Concrete Mixture for Bridge Decks and Rails
    Das, Soumitra ;
    Morcous, George
    2023-12-08 | PDF
    Right after construction, drying shrinkage of restrained concrete bridge decks and rails causes early-age cracking, insertion of water and chemicals, and corrosion of reinforcing steel that eventually leads to delamination and spalling of concrete. The main objective of this research is to control early-age shrinkage cracking by reducing cementitio ...
  • Elevation, Flow Accumulation, Flow Direction, and Stream Definition Data in Support of the Illinois StreamStats Upgrade to the Basin Delineation Database [supporting dataset]
    Sharpe, Jennifer B ;
    Schafer, Lindsey A.
    2023-12-08 | JSON
    The U.S. Geological Survey (USGS), in cooperation with the Illinois Center for Transportation and the Illinois Department of Transportation, prepared hydro-conditioned geographic information systems (GIS) layers for use in the Illinois StreamStats application. These data were used to delineate drainage basins and compute basin characteristics for u ...
    Dataset
1861 - 1880 / 36873
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