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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 3841 - 3860 of 36908 results
  • Methodology for Calibration and Validation of Mesoscopic Traffic Simulation Models
    Methodology for Calibration and Validation of Mesoscopic Traffic Simulation Models
    Zhao, Mo ;
    Appiah, Justice
    2021-08-01 | PDF
    Traffic simulation models are increasingly being used in the transportation engineering profession—often, to solve complex problems that may not lend themselves to traditional analysis techniques. The application of traffic simulation models has traditionally been at the individual vehicle (microscopic) level or aggregate traffic stream (macroscopi ...
  • Development of Low VoltageExtended Runtime Signalized Intersection Using Backup Power after the Loss of Utility Power Due to Hurricanes
    Development of Low Voltage/Extended Runtime Signalized Intersection Using Backup Power after the Loss of Utility Power Due to Hurricanes
    Lin, Pei-Sung ;
    Kourtellis, Achilleas
    2021-08-01 | PDF
    This research study investigated the applicability of backup power systems to provide extended backup power to traffic signals after power loss due to hurricanes. CUTR researched available and experimental technologies and recommended three systems for testing to the Florida Department of Transportation (FDOT). The three selected systems were acqui ...
  • GISBased Environmental LongTerm Monitoring Web Portal Phase II
    GIS-Based Environmental Long-Term Monitoring Web Portal Phase II
    Terry, Leigh ;
    Smith, Randy K.
    2021-08-01 | PDF
    A GIS-based online portal was developed to store, analyze, and display data from multiple sources pertinent to the ALDOT Coliseum Boulevard groundwater contaminant plume site in Montgomery Alabama. These sources comprise various consultants involved with the site including geotechnical companies, water testing labs, law firms, and management person ...
  • Green Waves Machine Learning and Predictive Analytics Making Streets Better for People on Bikes
    Green Waves, Machine Learning, and Predictive Analytics: Making Streets Better for People on Bikes
    Fickas, Stephen
    ORCID ICON IMG
    2021-08-01 | PDF
    This project focuses on giving bicyclists a safer and more efficient path through a city's signalized intersections. It builds on a prior NITC project that tested an app for a fixed-time corridor. The goal of this project is to lay the groundwork for extending this earlier app to include actuated signals. Two machine-learning algorithms are introdu ...
  • RealTime Traffic Analytics at Intersections
    Real-Time Traffic Analytics at Intersections
    Narasimhan, Srinivasa G. ;
    Tamburo, Robert
    2021-08-01 | PDF
    More and more city planners are taking into consideration smart mobility solutions to address transportation needs and central to smart transportation systems is access to real-time data. For example, self-driving cars offer independence for seniors and people with disabilities, greater road safety, cost savings through ride sharing, increased prod ...
  • Communicate Lessons Exchange Advice Record CLEAR Database Development
    Communicate Lessons, Exchange Advice, Record (CLEAR) Database Development
    Jaselskis, Edward J. ;
    Jhala, Arnav
    2021-07-31 | PDF
    Valuable lessons learned and best practices gleaned from construction projects often do not transfer to future generations of personnel due to the lack of a formalized process. This ongoing issue gives rise to the need to impart fresh training to new North Carolina Department of Transportation (NCDOT) employees once the aging workforce retires or i ...
  • Caltrans Autonomous Vehicles Industry Survey of Transportation Infrastructure Needs
    Caltrans Autonomous Vehicles Industry Survey of Transportation Infrastructure Needs
    Chan, Ching Yao ;
    Wang, Peggy
    2021-07-30 | PDF
    A survey was designed and conducted by inviting various AV industry players to practically answer one prime question "what transportation infrastructure improvements or modifications are needed to improve AV performance?" Based on the survey results, selected AV companies were interviewed. The purpose of the interviews was to have in-depth dialog w ...
  • A BeforeAfter Intervention Experiment and Survey
    A Before-After Intervention Experiment and Survey
    McBride, Elizabeth C ;
    Goulias, Konstadinos G.
    2021-07-29 | PDF
    In this project, we first develop a strong theoretical model accompanied by data collection to test some of its aspects for behavioral change research. Data collection shifted from the originally planned public transportation intervention to the examination of COVID-19 impacts on the life of Los Angeles Metropolitan area residents. In terms of subs ...
  • Accessibility With GetGoing
    Accessibility With GetGoing
    Eskenazi, Maxine ;
    Black, Alan W.
    2021-07-28 | PDF
    The goal of this proposal is to make the GetGoing system which enables seniors to get transportation information over the phone, to also serve individuals with impairments who need more information about how to get to a desired destination such as condition of sidewalks and where the relevant entrance of a building is located. The team will work wi ...
  • Surficial Stabilization of WildfireBurnt Hillslopes Using Xanthan Gum and Polyacrylamide
    Surficial Stabilization of Wildfire-Burnt Hillslopes Using Xanthan Gum and Polyacrylamide
    Akin, Idil Deniz ;
    Garnica, Sophia S
    2021-07-27 | PDF
    Post-wildfire erosion and the slope instability issues associated with it are a global problem that can negatively affect transportation corridors, the environment, and human life. Currently, mulch treatments are commonly used means of stabilizing wildfire-burnt hillslopes; however, mulch, especially agricultural straw mulch, can pose environmental ...
  • LargeScale and LongTerm Forecasting of Performance Measurement of Public Transportation Systems
    Large-Scale and Long-Term Forecasting of Performance Measurement of Public Transportation Systems
    Chiang, Yao-Yi ;
    Shahabi, Cyrus
    2021-07-26 | PDF
    Accurate forecasting of public transportation metrics is critical towards the high reliability and efficiency of the public transportation system. However, deploying a forecasting system to serve city-level public transportation with long-term forecasting is challenging. In this project, we develop the capability for processing the entire Los Angel ...
  • Quantifying Gully Erosion and Potential for Sediment and Phosphorus Pollution Reductions Achieved by Erosion Remediation Projects on Vermonts Roads
    Quantifying Gully Erosion and Potential for Sediment and Phosphorus Pollution Reductions Achieved by Erosion Remediation Projects on Vermont’s Roads
    Wemple, Beverley C. ;
    Estabrook, Emma
    2021-07-16 | PDF
    Erosion at road drainage outfalls and culvert outlets contributes to water quality impairment by discharging stormwater, sediment, sediment-bound nutrients, and other water quality contaminants to receiving waters. In Vermont, past work has quantified the importance of road surface and roadside (i.e. ditch) erosion to water quality impairment and p ...
  • UF UABs Phase I Demonstration Study Older Driver Experiences With Autonomous Vehicle Technology
    UF & UAB’s Phase I Demonstration Study: Older Driver Experiences With Autonomous Vehicle Technology
    Classen, Sherrilene ;
    Sisiopiku, Virginia
    2021-07-15 | PDF
    Older adults (>65 years) account for almost 20% of the population in the United States and prefer driving as their primary mode of transportation but are at greater risk for crash-related injuries and death, compared to younger drivers. Autonomous vehicles (AVs) may hold health and safety benefits for older drivers, if this segment of the populatio ...
  • Smart Glasses for Improving Mobility of Low Vision People Phase Two
    Smart Glasses for Improving Mobility of Low Vision People (Phase Two)
    Cai, Yang
    ORCID ICON IMG
    2021-07-15 | PDF
    This proposal aims to continue the work toward a prototype of the smart glasses with the digital bioptic lens. In Phase Two, the project will implement the digital bioptic lens on augmented reality glasses. Bioptic glasses is a telescope on glasses. It helps people with poor vision see details in the central retina area where it has degenerated by ...
  • Connected Vehicle Pilot Deployment Program Phase 1 Performance Measurement and Evaluation Support Plan New York City Final Report
    Connected Vehicle Pilot Deployment Program Phase 1: Performance Measurement and Evaluation Support Plan: New York City: Final Report
    Galgano, Steve ;
    Talas, Mohamad
    2021-07-14 | PDF
    This document describes the Performance Measurement and Evaluation Support Plan for the New York City Department of Transportation New York City (NYC) Connected Vehicle Pilot Deployment (CVPD) Project. The report documents the performance metrics that will be used to assess the success of the NYC CVPD project, the targets for improvement in those p ...
  • 2021 International Symposium on Transportation Data and Modelling
    2021 International Symposium on Transportation Data and Modelling
    Yin, Yafeng ;
    Mi, Tian
    2021-07-09 | PDF
    This project partially sponsored the organization of the 2021 International Symposium on Transportation Data and Modeling (ISTDM 2021), which aims to gather transportation researchers and practitioners across the globe for exploring the frontiers of big data, modeling and simulation to advance transportation research to support the connected, coope ...
  • Guidelines for Wildlife Vehicle Collision Mitigation
    Guidelines for Wildlife Vehicle Collision Mitigation
    Bramblee, Kit
    2021-07-07 | PDF
    Vehicle collisions with wildlife are a national problem that affects motorists in every U.S. state, and challenges state DOTs seeking to minimize these crashes. New data shows U.S. drivers on average have a 1 in 116 chance of a collision with an animal. The company estimates there were over 1.9 million animal collision insurance claims in the U.S. ...
  • 100 Biodiesel Vector Technology and Fuel Dispensing Solution A CTECH Live Lab Pilot Project for the Implementation and Evaluation of the 100 Biodiesel Technology on Identified Equipment Within Cornells Fleet Operations
    100% Biodiesel Vector Technology and Fuel Dispensing Solution — A CTECH Live Lab Pilot Project for the Implementation and Evaluation of the 100% Biodiesel Technology on Identified Equipment Within Cornell’s Fleet Operations
    Brumberg, Gregory ;
    Li, Lawrence
    2021-07-02 | PDF
    In this study, researchers analyzed whether it was feasible for Cornell vehicles to use the Vector System (VS) by Optimus Technologies, a system that modifies diesel engine vehicles to run on biodiesel in addition to diesel in cold weather conditions. Biodiesel solidifies at a higher temperature than diesel, so to use biodiesel in the winter, the V ...
  • Consideration of Automated Vehicle Benefits and Research Needs for Rural America
    Consideration of Automated Vehicle Benefits and Research Needs for Rural America
    Dowds, Jonathan ;
    Sullivan, James
    2021-07-01 | PDF
    Safety, mobility, accessibility challenges, and dependence on personal vehicles have long plagued rural transportation systems. Benefits in these areas are widely touted by autonomous vehicle (AV) advocates. Seven mechanisms for AV-induced increases in vehicle miles traveled (VMT) are reviewed here, and five of these mechanisms are expected to have ...
  • Expanding the UC Davis GIS Electric Vehicle Planning Toolbox Beyond California The Delaware Valley Regional Planning Commission Case Study
    Expanding the UC Davis GIS Electric Vehicle Planning Toolbox Beyond California: The Delaware Valley Regional Planning Commission Case Study
    Tal, Gil ;
    Lee, Jae Hyun
    2021-07-01 | PDF
    This project creates a toolkit that run in ArcGIS and allows users to project where electric vehicle (EV) owners will live, work, and charge. There are three distinct modules: market analysis, workplace charging, and home charging presented in block group level. The tool can be updated by the metropolitan planning organization (MPO) users to reflec ...
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