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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 3301 - 3320 of 36151 results
  • Resilient and Rapid Repair Measures for Seismically Vulnerable Bridges Following Major Earthquakes
    Resilient and Rapid Repair Measures for Seismically Vulnerable Bridges Following Major Earthquakes
    Murtuz, A K M Golam ;
    Dusicka, Peter
    2021-09-01 | PDF
    The Cascadia Subduction Zone (CSZ) earthquake threatens bridges across the Pacific Northwest. Damage is expected to be geographically spread throughout the region and will have a nearly simultaneous impact on transportation through several important corridors. While bridge repair and replacement will ultimately be needed, priority will be placed on ...
  • Impact of Connected and Autonomous Vehicles on Nontraditional Intersection Design Superstreets
    Impact of Connected and Autonomous Vehicles on Nontraditional Intersection Design: Superstreets
    Fan, Wei (David) ;
    Liu, Shaojie
    2021-09-01 | PDF
    Congestion has been becoming a critical issue for transportation professionals as it increases travel time, energy use and pollutant emissions. Thanks to recent technology development of wireless communication and artificial intelligence, connected and autonomous vehicles (CAVs) become a promising and practical approach to increasing road capacity. ...
  • Best Practice Operation of Reversible Express Lanes for the Kennedy Expressway
    Best Practice Operation of Reversible Express Lanes for the Kennedy Expressway
    Mohammadian, Abolfazl ;
    Parsa, Amir Bahador
    2021-09-01 | PDF
    Reversible lanes in Chicago’s Kennedy Expressway are an available infrastructure that can significantly improve traffic performance; however, a special focus on congestion management is required to improve their operation. This research project aims to evaluate and improve the operation of reversible lanes in the Kennedy Expressway. The Kennedy Exp ...
  • Pooled and Shared Travel in the Wake of the Pandemic An Inventory and User and Expert Assessments of Vehicle Design Strategies to Mitigate Risk of Disease Transmission
    Pooled and Shared Travel in the Wake of the Pandemic: An Inventory and User and Expert Assessments of Vehicle Design Strategies to Mitigate Risk of Disease Transmission
    Sanguinetti, Angela ;
    DePew, Ashley
    2021-09-01 | PDF
    This project involved the development of a COVID-19 Risk-mitigating Vehicle Design (CRVD) typology to summarize and analyze the wide variety of vehicle design strategies that have been implemented or suggested to reduce the risk of COVID-19 transmission among workers and passengers in shared and pooled vehicles. Public transit and shared mobility s ...
  • Detecting Driver Drowsiness With MultiSensor Data Fusion Combined With Machine Learning
    Detecting Driver Drowsiness With Multi-Sensor Data Fusion Combined With Machine Learning
    Kulhandjian, Hovannes
    ORCID ICON IMG
    2021-09-01 | PDF
    According to the National Highway Traffic Safety Administration, in 2017 drowsy driving resulted in 50,000 injuries across 91,000 police-reported accidents, as well as almost 800 deaths. Through the application of visual and radar sensors combined with machine learning, this research developed a drowsy driver detection system aimed to prevent poten ...
  • Calculating Road User Cost for Specific Sections of Highway for Use in Alternative Contracting Project
    Calculating Road User Cost for Specific Sections of Highway for Use in Alternative Contracting Project
    Shrestha, K. Joseph ;
    Uddin, Moin
    2021-09-01 | PDF
    Road user costs (RUCs) quantify the inconveniences to road users resulting from ongoing construction projects. Although the concept of RUC has traditionally been associated with the life cycle cost analysis, its importance has increased in alternative contracting methods in recent years. Despite its importance, the Tennessee Department of Transport ...
  • A Data-Driven Safety Dashboard Assessing Maryland Statewide Density Exposure of Pedestrians, Bicycles, and E-Scooters [supporting datasets]
    Xiong, Chenfeng ;
    Mahmoudi, Jina
    2021-09-01 | ZIP
    This project’s ultimate deliverable is a functional Vulnerable User Density Dashboard (https://mti.umd.edu/sdi) for the state of Maryland. The dashboard uses mobile device location data and electric scooter volume data to reflect pedestrian, bicycle, and electric scooter travel volumes and their exposure to roadway safety risk across all roadways i ...
    Dataset Supporting Files
  • Develop Rapid Quality Control and Assurance Technologies for Pavements Phase I
    Develop Rapid Quality Control and Assurance Technologies for Pavements: Phase I
    Crockford, Bill ;
    Gu, Fan
    2021-09-01 | PDF
    Attaining uniform construction of the required specification quality serves to maximize pavement life and minimize life-cycle costs. Often, localized defects govern pavement life. This project evaluated technologies for rapidly verifying attainment of specification and material requirements during flexible base construction, during asphalt mixture ...
  • Use of Geosynthetics on Subgrade and on Low and Variable Fill Foundation
    Use of Geosynthetics on Subgrade and on Low and Variable Fill Foundation
    Christoforidou, Eirini ;
    Bobet, Antonio
    2021-09-01 | PDF
    There are significant problems during construction to establish an adequate foundation for fills and/or subgrade for pavements when the natural ground has low-bearing soils. Geosynthetics such as geogrids, geotextiles, and/or geocells could provide a less time-consuming, costly alternative for establishing an adequate foundation for the fill and/or ...
  • Analysis of Intermodal VesseltoRail Connectivity
    Analysis of Intermodal Vessel-to-Rail Connectivity
    Azimi, Mehdi ;
    Fayek, Enamul Karim
    2021-09-01 | PDF
    No Description
  • Prioritizing People Mixed Equilibrium Assignment for AV Based on Occupancy
    Prioritizing People - Mixed Equilibrium Assignment for AV Based on Occupancy
    Mantri, Sruthi ;
    Lownes, Nicholas
    2021-09-01 | PDF
    As transportation technology continues to evolve, Autonomous Vehicles (AV) have the potential to disrupt the way we travel and require adjustments to our traditional transportation operations mode choice models. As AV become more widely available and increase in market share, there are predictions that a significant portion of the AV fleet will be ...
  • Test Procedure for MechanicsBased Assessment of Flexible Base Quality
    Test Procedure for Mechanics-Based Assessment of Flexible Base Quality
    Lytton, Robert ;
    Devadas, Arvind
    2021-09-01 | PDF
    The scope of this research is to use commercially available ground penetrating radar (GPR) system and apply the developed methodologies to estimate the modulus of a base layer or estimate pavement layer composition values, including water content or asphalt content, density, percent air or porosity in the asphalt, concrete, base, and subgrade layer ...
  • Practitioner Guide An Inventory of Vehicle Design Strategies Aimed at Reducing COVID19 Transmission in Public and Private Pooled and Shared Transportation
    Practitioner Guide: An Inventory of Vehicle Design Strategies Aimed at Reducing COVID-19 Transmission in Public and Private Pooled and Shared Transportation
    Sanguinetti, Angela ;
    DePew, Ashley
    2021-09-01 | PDF
    The COVID-19 pandemic has had dramatic impacts on transportation globally, reducing travel and deterring travelers from using shared and pooled modes such as public transit, carpooling, car-sharing, pooled ride-hailing, and micromobility. These modes are critical components of a decarbonized and equitable mobility future, but already comprised a sm ...
  • Feasibility Analysis of Realtime Intersection Data Collection and Processing Using Drones
    Feasibility Analysis of Real-time Intersection Data Collection and Processing Using Drones
    Ozguven, Eren Erman ;
    Karaer, Alican
    2021-09-01 | PDF
    Traditional data collection techniques at intersections are known to be time consuming and costly while handling the complexity associated with the heavy traffic volume and travel demand on today’s roadways. Therefore, transportation agencies have been searching for more innovative, safer, and cheaper data collection solutions to have a faster and ...
  • Travel Time Forecasting on a Freeway Corridor a Dynamic Information Fusion Model based on the Random Forests Approach
    Travel Time Forecasting on a Freeway Corridor: a Dynamic Information Fusion Model based on the Random Forests Approach
    Fan, Wei (David) ;
    Qiu, Bo
    2021-09-01 | PDF
    No Description
  • Effective Design and Operation of Pedestrian Crossings
    Effective Design and Operation of Pedestrian Crossings
    Ahmad, Noshin S ;
    Pineda-Mendez, Raul
    2021-09-01 | PDF
    Pedestrians are vulnerable road users since they are prone to more severe injuries in any vehicular collision. While innovative solutions promise improved pedestrian safety, a careful analysis of local conditions is required before selecting proper corrective measures. This research study had two focuses: (1) methodology to identify roads and areas ...
  • Exploring ShortSea Shipping as an Alternative to NonBulk Freight Trucking in Southeastern MA
    Exploring Short-Sea Shipping as an Alternative to Non-Bulk Freight Trucking in Southeastern MA
    Uiterwyk, Kristin ;
    Johnson, C.
    2021-09-01 | PDF
    The Island of Martha’s Vineyard relies on the transport of goods and people via Steamship Authority Vessels operating from Woods Hole in Falmouth, MA. The purpose of this research project was to study the feasibility of expanding the waterborne distribution of non-bulk freight between mainland Massachusetts and the island of Martha’s Vineyard. The ...
  • Public Perception of the Collection and Use of Connected Vehicle Data
    Public Perception of the Collection and Use of Connected Vehicle Data
    Acharya, Sailesh ;
    Mekker, Michelle
    2021-09-01 | PDF
    Connected vehicles (CV) offer various potential improvements to the existing transportation system. However, to maximize these benefits, sufficient market penetration is needed. The existing literature lacks understanding of public perception of CV adoption. Past studies highlighted data privacy and security as possible barriers to CV acceptance. T ...
  • NJDOT Research Library Action Plan Final Report
    NJDOT Research Library Action Plan: Final Report
    Faron, Whitney ;
    Marks, Michael
    2021-09-01 | PDF
    The New Jersey Department of Transportation (NJDOT) engaged Cambridge Systematics (CS) to assess the NJDOT Research Library’s mission and goals, document the current state of the Research Library in relation to the mission and goals, understand how other states manage and operate their research libraries; and develop an action plan for improving th ...
  • NYSDOT Research Peer Exchange The Use of Data Management and Analytics to Improve Agency Decision Making and the SPR Research Program
    NYSDOT Research Peer Exchange: The Use of Data Management and Analytics to Improve Agency Decision Making and the SPR Research Program
    Hill, Jonathan ;
    Lund, Ryan
    2021-09-01 | PDF
    The following report summarizes the results of the New York State Department of Transportation (NYSDOT) State Planning and Research (SPR) research peer exchange held on February 2-4, 2021. Managers and staff from NYSDOT’s Office of Technical Services of the Engineering Division and the Office of Policy, Planning and Performance of the Policy and Pl ...
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