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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 6501 - 6520 of 36101 results
  • Evaluation of a Collision Avoidance and Mitigation System CAMS on Winter Maintenance Trucks
    Evaluation of a Collision Avoidance and Mitigation System (CAMS) on Winter Maintenance Trucks
    Zockaie, Ali ;
    Saedi, Ramin
    2018-09-18 | PDF
    Snow removal and deicing activities are commonly performed by roadway agencies to enhance winter mobility and safety. Due to slower travel speeds during these operations, combined with low visibility and reduced pavement friction, the potential for rear-end collisions with winter maintenance trucks remains a persistent issue. A prototype collision ...
  • VehicletoDevice V2D Communications Readiness of the Technology and Potential Applications for People with Disability
    Vehicle-to-Device (V2D) Communications: Readiness of the Technology and Potential Applications for People with Disability
    Al-Fuqaha, Ala ;
    Kwigizile, Valerian
    2018-09-17 | PDF
    IEEE 802.11p was developed as an amendment to IEEE 802.11 for wireless access in vehicular environments (WAVE). While WAVE is considered the de facto standard for V2V communications, in the past few years a number of communications technologies have emerged that enable direct device-to-device (D2D) communications. Technologies like Bluetooth Smart, ...
  • Distracted Driving Translational Research for Injury Prevention TRIP Laboratory
    Distracted Driving Translational Research for Injury Prevention (TRIP) Laboratory
    Stavrinos, Despina
    2018-09-14 | PDF
    Motor vehicle collisions (MVCs) are one of the leading causes of death for Alabamians across the lifespan. Highway fatalities are a major epidemic in this country. Most car crashes in Alabama take place in urban areas - but most collisions involving fatalities occur on rural roads, according to data compiled by the National Highway Traffic Safety A ...
  • Performance Measures for Roadside Features
    Performance Measures for Roadside Features
    Fyhrie, Patricia ;
    Ravani, Bahram
    2018-09-10 | PDF
    There are over 15,000 centerline miles of highways in the state of California with Caltrans Division of Maintenance performing upkeep operations for the roadways and the accompanying roadside features, including items such as guardrails, signs, landscaping, storm water management systems, and traffic signals. Experienced maintenance workers who hav ...
  • HighwayRail Grade Crossing Traffic Hazard Forecasting Model
    Highway-Rail Grade Crossing Traffic Hazard Forecasting Model
    Lu, Pan ;
    Tolliver, Denver
    2018-09-01 | PDF
    The highway-rail crossing accident has been long recognized as a priority safety concern for worldwide rail industries and researchers because traffic crashes at highway-rail crossings are often catastrophic with serious consequences, which include fatalities, injuries, extensive property damage, and delays in both railway and highway traffic. Rela ...
  • Evaluating the Performance of Georgias CRCPs Using Ground Penetrating Radar GPR
    Evaluating the Performance of Georgia’s CRCPs Using Ground Penetrating Radar (GPR)
    Durham, Stephan A. ;
    Chorzepa, Mi G
    2018-09-01 | PDF
    In an effort to provide reliable decisions regarding highway pavements, condition assessment is often conducted to evaluate pavement performance. For Continuously Reinforced Concrete Pavements (CRCP) evaluated in this study, pavement distress is classified as having transverse and longitudinal cracks and/or punchouts. This report evaluated the infl ...
  • DecisionSupport Tools Development and Tutorial
    Decision-Support Tools: Development and Tutorial
    Boyles, Stephen
    2018-09-01 | PDF
    This document describes the spreadsheet tools implementing the regression models developed in the main report (0-6859-1). The tools offer a user-friendly interface to evaluate the effectiveness of active traffic management (ATM) strategies for a given network. Three ATM strategies are considered: ramp metering, variable speed limit (VSL), and dynam ...
  • Research Library Operations Calendar Year 2017
    Research Library Operations – Calendar Year 2017
    Paszamant, Carol B
    ORCID ICON IMG
    2018-09-01 | PDF
    The NJDOT Research Library operates as a branch of the New Jersey State Library and is funded by the FHWA State Planning and Research Program as a research project. The library serves NJDOT employees; New Jersey state government employees; other libraries, organizations, and businesses; and members of the general public. Two certified professional ...
  • Using Driver State Detection in Automated Vehicles
    Using Driver State Detection in Automated Vehicles
    Gaspar, John ;
    Schwarz, Chris
    2018-09-01 | PDF
    The next several years will bring a large increase in automated vehicle capabilities. High levels of automation will require bi-directional transfers of control between the driver and vehicle. These control transfer situations pose one of the greatest potential safety shortfalls. One specific issue that arises is that drivers may be unfit or ill-pr ...
  • Automated Vehicle Scenarios Simulation of SystemLevel Travel Effects Using AgentBased Demand and Supply Models in the San Francisco Bay Area
    Automated Vehicle Scenarios: Simulation of System-Level Travel Effects Using Agent-Based Demand and Supply Models in the San Francisco Bay Area
    Rodier, Caroline ;
    Jaller, Miguel
    2018-09-01 | PDF
    In much in the same way that the automobile disrupted horse and cart transportation in the 20th century, automated vehicles hold the potential to disrupt our current system of transportation in the 21st century. Experts predict that vehicles could be fully automated by as early as 2025 or as late as 2035. Methods are needed to help the public and p ...
  • Optimal Automated Demand Responsive Feeder Transit Operation and Its Impact [supporting datasets]
    Lee, Young-Jae ;
    Nickkar, Amirreza
    2018-09-01 | ZIP
    Although demand responsive feeder bus operation is possible with human-driven vehicles, it has not been very popular and mostly available as a special service because of the high operating costs due to the intensive labor costs as well as advanced real-time information technology and complicated operation. However, once automated vehicles become av ...
    Dataset
  • Traffic State Estimation Using Stochastic Lagrangian Dynamics
    Traffic State Estimation Using Stochastic Lagrangian Dynamics
    Zheng, Fangfang ;
    Jabari, Saif Eddin
    2018-09-01 | PDF
    This paper proposes a new stochastic model of traffic dynamics in Lagrangian coordinates. The source of uncertainty is heterogeneity in driving behavior, captured using driver-specific speed-spacing relations, i.e., parametric uncertainty. It also results in smooth vehicle trajectories in a stochastic context, which is in agreement with real-world ...
  • Onboard Feedback to Promote EcoDriving Average Impact and Important Features
    Onboard Feedback to Promote Eco-Driving : Average Impact and Important Features
    Sanguinetti, Angela
    ORCID ICON IMG
    2018-09-01 | PDF
    Driver behavior has an immense impact on vehicle fuel economy and emissions, yet it has historically been treated as random error in models of fuel economy and neglected in energy and environmental policy-making regarding fuel efficiency. Recently, concern about fossil fuel depletion and climate change, as well as the critical role of driver behavi ...
  • Augmented Reality for Safer PedestrianVehicle Interactions
    Augmented Reality for Safer Pedestrian-Vehicle Interactions
    Noyce, David A. ;
    Nassereddine, Hiba
    2018-09-01 | PDF
    Communicating the presence of pedestrians or bicyclists to vehicle drivers can lead to safer interactions with these vulnerable road users. Advanced knowledge about the presence of these users on the roadway is particularly important when their presence is not expected or when these users are out of range of the advanced safety systems that are bec ...
  • A Planning Tool for Active Traffic Management Combining Microsimulation and Dynamic Traffic Assignment FHWA 068591
    A Planning Tool for Active Traffic Management Combining Microsimulation and Dynamic Traffic Assignment (FHWA 0-6859-1)
    Boyles, Stephen D. ;
    Walton, C Michael
    2018-09-01 | PDF
    Active traffic management (ATM) strategies have been considered as a tool for congestion mitigation in the last few decades. They rely on real-time traffic observations to regulate the flow of traffic. This research focuses on developing tools for evaluating the effectiveness of ATM strategies for freeway corridors. The research efforts can be cate ...
  • Optimal Automated Demand Responsive Feeder Transit Operation and Its Impact
    Optimal Automated Demand Responsive Feeder Transit Operation and Its Impact
    Lee, Young-Jae ;
    Nickkar, Amirreza
    2018-09-01 | PDF
    Although demand responsive feeder bus operation is possible with human-driven vehicles, it has not been very popular and mostly available as a special service because of the high operating costs due to the intensive labor costs as well as advanced real-time information technology and complicated operation. However, once automated vehicles become av ...
  • Field Aging and Oil Modification Study
    Field Aging and Oil Modification Study
    Bahia, Hussain U. ;
    Sadek, Husam
    2018-09-01 | PDF
    The objectives of this research project included: 1. Develop laboratory short- and long-term aging protocols that will simulate field aging effects measured on plant-produced mixtures from field strip by comparing mixture and extracted binder properties to those of laboratory-produced mixtures, and 2. Verify the effects of softening oils and polyme ...
  • Radar Congestion Study
    Radar Congestion Study
    Buller, William ;
    Wilson, Brian
    2018-09-01 | PDF
    This study builds on prior work to characterize the environment in which automotive radars must operate, especially as systems with greater autonomy enter the market. Systems that operate well in environments without other radars may suffer significant degradation of performance in radar-congested environments. The results of this research provide ...
  • DataDriven Behavior Analysis and Implications in PlugIn Electric Vehicle Policy Studies
    Data-Driven Behavior Analysis and Implications in Plug-In Electric Vehicle Policy Studies
    Ji, Wei
    2018-09-01 | PDF
    The adoption of plug-in electric vehicles (PEVs) is considered to be a potential solution to reduce transportation-related emissions. People’s vehicle choice and driving behavior will have important implications for the realized emissions reductions from PEVs. Therefore, PEV-related policy studies require good understanding of human behavior. Tradi ...
  • Catch Basin Inserts for Ohio Roadways
    Catch Basin Inserts for Ohio Roadways
    Dietrich, Tom ;
    McCabe, Mark
    2018-09-01 | PDF
    Detailed evaluation of roadside catch basin inserts (CBIs) for the removal of TSS. Study consisted of both field and laboratory testing. Field testing evaluated the installation, maintenance and removal needs for CBIs during a year-long installation period. The Lab testing evaluated the sediment retention associated with each CBI. Since none of the ...
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