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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 2041 - 2060 of 36151 results
  • Impact of Curling and Warping on Concrete Pavement Phase II
    Impact of Curling and Warping on Concrete Pavement: Phase II
    Tian, Kexin ;
    King, Daniel
    2023-05-01 | PDF
    Curling and warping behavior due to temperature and moisture variation has been widely considered an influential factor affecting the smoothness of jointed plain concrete pavement (JPCP). In recent decades, while extensive efforts have been made to quantify the impact of curling and warping-related deflections on the smoothness of JPCP, a standardi ...
  • Impact of Curling and Warping on Concrete Pavement Phase II Technology Summary
    Impact of Curling and Warping on Concrete Pavement: Phase II [Technology Summary]
    Ceylan, Halil ;
    Kim, Sunghwan
    2023-05-01 | PDF
    Evaluating the effects of various environmental conditions and design parameters on curling and warping can help improve the performance of Iowa concrete pavements.
  • Bicycles and Micromobility for Disaster Response and Recovery Manuscript
    Bicycles and Micromobility for Disaster Response and Recovery [Manuscript]
    Fitch-Polse, Dillon Taylor ;
    Chen, Chen
    2023-05-01 | PDF
    Bicycles and other forms of micromobility have been anecdotally used in past disasters to help save lives and improve community recovery. However, research and practice are scarce on this resilient transportation strategy, which limits its usefulness and possible benefits. To fill this gap, our paper investigates the potential role bicycles and mic ...
  • Outdoor Information Panels To Convey RealTime Travel Information for Ridership Recovery
    Outdoor Information Panels To Convey Real-Time Travel Information for Ridership Recovery
    Gao, Song ;
    Christofa, Eleni
    2023-05-01 | PDF
    The MBTA has launched an Outdoor Information Panel (OIP) program. This will update legacy outdoor advertising locations or add other strategic locations near major roadways through digitization, for which 25% of the playlists will have dedicated "set aside" time to deliver real-time travel information (RTTI). This project developed guidelines for d ...
  • Evaluation of FDOT Corrosion and Control Programs
    Evaluation of FDOT Corrosion and Control Programs
    Fadden, Matthew ;
    Jones, Casey
    2023-05-01 | PDF
    Corrosion of Florida’s bridge infrastructure has shown to be costly for FDOT, both due to the number of bridges and harsh environmental conditions across the State. While the mechanisms that describe corrosion within reinforced concrete bridge elements are well understood, the ability to limit corrosion in practice has led to many methods that aim ...
  • DowntoEarth Winter Operations Sensing and Data Applications
    Down-to-Earth Winter Operations Sensing and Data Applications
    Bhat, Chandra ;
    Claudel, Christian
    2023-05-01 | PDF
    Weather-responsive management strategies (WRMS) are innovative approaches to utilizing data in making decisions for roadway operations and maintenance. Texas Department of Transportation (TxDOT) has been evaluating low-cost approaches for enhancing WRMS, with special emphasis on suburban and rural environments. The main focus of Project 0-7007 is t ...
    Supporting Files
  • Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management FITM Plan Deployment Phase 3 An Incident Duration and Impact Prediction IDIP System
    Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management (FITM) Plan Deployment Phase 3: An Incident Duration and Impact Prediction (IDIP) System
    Huang, Yen-Lin ;
    Cheng, Yao
    2023-05-01 | PDF
    This phase of the study has finalized the innovative system for real-time prediction of a detected incident’s duration and its potential traffic impacts on both the subject freeway and its neighboring local streets due to the queues and resulting detouring off-ramp flows. With such information, highway agencies responsible for incident response and ...
  • Automated Vehicle Recommendations for Texas A Study of Highway and Urban Operational Design Domains
    Automated Vehicle Recommendations for Texas: A Study of Highway and Urban Operational Design Domains
    Chin, Kristie ;
    Gold, Andrea
    2023-05-01 | PDF
    Automated vehicles (AVs) present significant potential; yet, their technological maturity and performance remain to be proven. With several deployments underway in the state, it is critical for the Texas Department of Transportation (TxDOT) to provide the public with assurances that the AVs are performing safely in their intended operational enviro ...
  • Implementation of Enhanced Probe Data CANBUS for Tactical Workzone and Winter Operations Management
    Implementation of Enhanced Probe Data (CANBUS) for Tactical Workzone and Winter Operations Management
    Desai, Jairaj ;
    Sakhare, Rahul Suryakant
    2023-05-01 | PDF
    For over a decade, segment-based probe data has been extensively used by transportation stakeholders for monitoring mobility on Indiana roadways. However, enhanced probe data from connected vehicles includes a richer dataset that can provide more detailed real-time and after-action reviews. This enhanced data includes detailed vehicle trajectories, ...
  • Mitigating Projects Missing Deadlines
    Mitigating Projects Missing Deadlines
    Bossert, Justin ;
    Kester, Chris
    2023-05-01 | PDF
    This project's purpose was to produce an educational guide for agencies on contract language and processes that, when used, will improve the likelihood of a contractor delivering a project on time. The guide is supported by the following: 1) Review of current industry standards and literature related to contract time determination, contract type, a ...
  • Tacit Knowledge Model to Support Knowledge Capture and Transfer in GDOT
    Tacit Knowledge Model to Support Knowledge Capture and Transfer in GDOT
    Guerra-Zubiaga, David
    2023-05-01 | PDF
    The research team has undertaken a comprehensive study of Tacit Knowledge Management (TKM) within the Georgia Department of Transportation (GDOT) and compared it to other state DOTs. Through document analysis, surveys, and a case study of the I-85 Highway Bridge Collapse, the team has developed a final draft of the GDOT Tacit Knowledge Model (TKM). ...
  • Advancing Equity in Accessibility and Travel Experiences The Role of Gender and Identity
    Advancing Equity in Accessibility and Travel Experiences: The Role of Gender and Identity
    Fan, Yingling ;
    Song, Ying
    2023-05-01 | PDF
    Gender can have a significant influence on people’s behaviors and experiences. Hence, excluding gender diversity in transportation research and practices can result in biased or incomplete understandings of issues and perceptions about transportation and quality of life. This study examined whether and how gender, in a broader sense, can result in ...
  • Cost Estimate of B vs C Grade Asphalt Binders
    Cost Estimate of B vs. C Grade Asphalt Binders
    Yan, Tianhao ;
    Marasteanu, Mihai
    2023-05-01 | PDF
    Polymer-modified binders (PMB) have been shown over the decades to improve the mechanical properties of asphalt mixtures compared to unmodified binders. Considering the higher initial cost of PMB, selecting the best alternative is very important, especially for local agencies given their limited budgets. A challenge in the materials selection proce ...
  • District Highway Maintenance Research OnCall Task 2 Evaluation of New Technologies for Tracking the Distribution of Deicing Materials Fact Sheet
    District Highway Maintenance Research On-Call Task 2: Evaluation of New Technologies for Tracking the Distribution of Deicing Materials [Fact Sheet]
    Lammers-Staats, Erin ;
    Raudenbush, Zane
    2023-05-01 | PDF
    This Research-On-Call task provides ODOT a framework with which to evaluate the available new technologies for tracking the distribution of deicing materials. To accomplish this, researchers analyzed the current state of the practice for ODOT storm management, surveyed other transportation agencies about their winter maintenance programs, identifie ...
  • 07039 The Development of Knowledge in the Application of StrutandTie Method Summary
    0-7039: The Development of Knowledge in the Application of Strut-and-Tie Method [Summary]
    Dassi, Martin ;
    Bayrak, Oguzhan
    2023-05-01 | PDF
    The strut-and-tie method (STM) is a simple and widely used method for designing D-regions in reinforced concrete members. Despite its incorporation into major design codes and continuous refinement over the past century, there are still areas that require further research. These include the use of 3D strut- and-tie models for designing drill shaft ...
  • Traffic Safety Facts 2021 Research Note Distracted Driving in 2021
    Traffic Safety Facts 2021 Research Note: Distracted Driving in 2021
    United States. Department of Transportation. National Highway Traffic Safety Administration
    2023-05-01 | National Transportation Statistics (NTS) | PDF
    The National Highway Traffic Safety Administration works to reduce the occurrence of distracted driving and raise awareness of its dangers. This risky driving behavior poses a danger not only to vehicle occupants but pedestrians and pedalcyclists as well. Driver distraction is a specific type of driver inattention that occurs when drivers divert at ...
  • District Highway Maintenance Research OnCall Task 2 Evaluation of New Technologies for Tracking the Distribution of Deicing Materials
    District Highway Maintenance Research On-Call Task 2: Evaluation of New Technologies for Tracking the Distribution of Deicing Materials
    Lammers-Staats, Erin ;
    Raudenbush, Zane
    2023-05-01 | PDF
    This report summarizes the results of a research task that was conducted to analyze Ohio DOT’s use of liquid deicing materials and the tracking capabilities of its snowplows’ distribution systems. The objective of the task was to identify areas for improvement in terms of tracking the liquid application rates and provide ideas on how to evaluate ne ...
  • Towards the Implementation of a Geotechnical Asset Management Program in the State of Georgia
    Towards the Implementation of a Geotechnical Asset Management Program in the State of Georgia
    Macedo, Jorge ;
    Burns, Susan E.
    2023-05-01 | PDF
    Experiences at U.S. departments of transportation (DOTs) have demonstrated the value of geotechnical asset management (GAM) to enable a framework for informed decisions that align the DOT’s objectives with investment and performance targets. However, because Georgia currently lacks a such a program, this study was performed to set the stage for dev ...
  • Influence of Autonomous and Partially Autonomous Vehicles on Minnesota Roads
    Influence of Autonomous and Partially Autonomous Vehicles on Minnesota Roads
    Espindola, Andre ;
    Alexander, Lee
    2023-05-01 | PDF
    This project focuses on experimental tests of the performance characteristics of autonomous vehicles (AVs) on highways and local roads in Minnesota. The project provides detailed data characterizing AV performance, which in turn can be used to inform the transportation community on implications for infrastructure maintenance, winter road maintenanc ...
  • Traffic Safety Facts 2021 Data Children
    Traffic Safety Facts 2021 Data: Children
    United States. Department of Transportation. National Highway Traffic Safety Administration
    2023-05-01 | National Transportation Statistics (NTS) | PDF
    This fact sheet contains information on fatal motor vehicle traffic crashes based on data from the Fatality Analysis Reporting System (FARS) and non-fatal motor vehicle traffic crashes from the Crash Report Sampling System (CRSS). A change instituted with the release of 2020 data is rounding estimates to the nearest whole number instead of the near ...
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