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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 4521 - 4540 of 36908 results
  • Multiresolution Analysis of the Impacts of Complete Streets on Efficiency Safety and Environment of Urban Corridors
    Multiresolution Analysis of the Impacts of Complete Streets on Efficiency, Safety and Environment of Urban Corridors
    Stevanovic, Aleksander ;
    Kan, David
    2020-11-30 | PDF
    In recent years, many DOTs and other public agencies consider implementing Complete Street designs to make our road infrastructure friendlier for multimodal users. This project developed multiresolution analysis methodologies to quantitatively assess the effectiveness and impact of Complete Street designs. Case studies were performed using the Salt ...
  • Vehicle Connectivity and Automation A Sibling Relationship
    Vehicle Connectivity and Automation: A Sibling Relationship
    Ha, Paul ;
    Chen, Sikai
    2020-11-26 | PDF
    The evolution of scientific advances has often been characterized by the amalgamation of two or more technologies. With respect to vehicle connectivity and automation, recent literature suggests that these two emerging transportation technologies can and will jointly and profoundly shape the future of transportation. However, it is not certain how ...
  • Quantifying the Duration of the Corrosion Propagation Stage in Stainless Steel Reinforcement
    Quantifying the Duration of the Corrosion Propagation Stage in Stainless Steel Reinforcement
    Orozco Martinez, Nelly S ;
    Saire Yanez, Julio
    2020-11-25 | PDF
    Present durability projections for concrete reinforced with stainless steel (SS) are limited in that, while accounting for a substantial increase in the corrosion initiation stage (CIS) duration, credit tends not to be given for any added corrosion propagation stage (CPS) duration over that of carbon steel (CS). The objectives of this work were to: ...
  • Instantaneous Hybridization Factor IHF Development for HEV EnergyEmissions Analyses Using RealWorld OnBoard Data
    Instantaneous Hybridization Factor (IHF) Development for HEV Energy-Emissions Analyses Using Real-World, On-Board Data
    Holmen, Britt A ;
    Robinson, Mitchell K.
    2020-11-22 | PDF
    Past research has shown on-road emissions patterns unique to HEVs, indicating the need to account for them in emissions models. The main objective of this work is to outline a framework for development of new HEV emissions models based on current knowledge of CV emissions. The premise is that accurate knowledge of the instantaneous (1 Hz) power spl ...
  • Using Municipal Vehicles as Sensor Platforms to Monitor the Health and Performance of the Traffic Control System
    Using Municipal Vehicles as Sensor Platforms to Monitor the Health and Performance of the Traffic Control System
    McCord, Mark R. ;
    Mishalani, Rabi G.
    2020-11-20 | PDF
    In this study, sets of video imagery are obtained from transit buses in regular service on The Ohio State University campus and processed into time-of-day traffic volume estimates on major campus roadways. The traffic volume estimates are obtained from vehicles identified in the video imagery using an approach previously developed by the investigat ...
  • Using Municipal Vehicles as Sensor Platforms to Monitor the Health and Performance of the Traffic Control System [supporting datasets]
    McCord, Mark R. ;
    Mishalani, Rabi G.
    2020-11-20 | PDF
    In this study, sets of video imagery are obtained from transit buses in regular service on The Ohio State University campus and processed into time-of-day traffic volume estimates on major campus roadways. The traffic volume estimates are obtained from vehicles identified in the video imagery using an approach previously developed by the investigat ...
    Dataset Supporting Files
  • Combining Truck and Vessel Tracking Data to Estimate Performance and Impacts of Inland Ports [supporting datasets]
    Hernandez, Sarah V ;
    Asborno, Magdalena I
    2020-11-18 | PDF
    The purpose of this project is to estimate the performance of multi-modal supply chains that use inland waterway ports. This is accomplished by developing a method to fuse publicly available datasets including truck and marine vessel tracking data and lock performance data. The study builds on a growing body of research related to multi-modal freig ...
    Dataset Supporting Files
  • Storm Water Infiltration and Pollinator Habitat Zones Along Highways
    Storm Water Infiltration and Pollinator Habitat Zones Along Highways
    McLaughlin, Richard A. ;
    Ashraah, Shaddy H
    2020-11-17 | PDF
    This project explored the possibilities of managing soils on new and existing roadside areas to reduce runoff through increased infiltration. This was pursued through several greenhouse studies, controlled field plots at three sites monitored for three years, and several installations on existing roadside areas. Tillage was very beneficial for impr ...
  • How Mobility and Accessibility Affect Crime Rates Insights from Mobile Device Location Data
    How Mobility and Accessibility Affect Crime Rates: Insights from Mobile Device Location Data
    Zhang, Lei ;
    Yang, Mofeng
    2020-11-10 | PDF
    This research study investigates the possible correlations between mobility, accessibility, and crime rate. A rich mobile device location dataset including detailed anonymized location traces of the mobile devices observed in the City of Baltimore was combined with the police arrest records to study how mobility and accessibility affect neighborhoo ...
  • Distributed Optimization of Traffic Signals in Arterial Networks
    Distributed Optimization of Traffic Signals in Arterial Networks
    Fei, Xinyu ;
    Wang, Xingmin
    2020-11-10 | PDF
    Presentation on Distributed Optimization of Traffic Signals in Arterial Networks-INFORMS Annual Meeting, Nov. 10, 2020.
  • Development of a Standardized Buttress for Approach Guardrail Transitions
    Development of a Standardized Buttress for Approach Guardrail Transitions
    Rosenbaugh, Scott K. ;
    Faller, Ronald K.
    2020-11-10 | PDF
    Approach guardrail transitions (AGTs) incorporate increased post and rail sizes, reduced post spacings, specialized buttress end geometries, and other roadway features to smoothly transition from deformable W-beam guardrail to rigid barriers. This transition in barrier lateral stiffness requires specific combinations of these components to function ...
  • Dynamic Testing and Evaluation of CulvertMounted StrongPost MGS to TL3 Guidelines of MASH 2016
    Dynamic Testing and Evaluation of Culvert-Mounted, Strong-Post MGS to TL-3 Guidelines of MASH 2016
    Pajouh, Mojdeh Asadollahi ;
    Bielenberg, Robert W.
    2020-11-02 | PDF
    A modified design of the Midwest Guardrail System (MGS) was evaluated for installation on a low-fill culvert with a strong-post attachment using to the culvert, half-post spacing, and a 12-in. (305-mm) offset from the back of the post to the culvert headwall through full-scale crash testing. A four-cell, concrete culvert with 8-in. (203-mm) thick s ...
  • Develop a GISbased Megaregion Transportation Planning Model
    Develop a GIS-based Megaregion Transportation Planning Model
    Pan, Qisheng ;
    Chun, Bumseok
    2020-11-01 | PDF
    Few studies have focused on the development and implementation of megaregional transportation models. It is a big challenge to build such kind of models because they need to ensure theoretical soundness and methodological validity in academic and professional studies while at the same time to meet the expectation of public agency on the models for ...
  • SpatioTemporal Analysis of Freight Patterns in Southern California
    Spatio‐Temporal Analysis of Freight Patterns in Southern California
    Jaller, Miguel ;
    Rivera, Daniel
    2020-11-01 | PDF
    There has been a general trend to shift the location of warehouses and distribution facilities away from consumer markets (logistics sprawl) in Southern California. This shift has a negative impact on logistics cost (though with reduced facility costs) and the environment because freight vehicles have to travel longer to reach their destinations. H ...
  • Design of Living Barriers To Reduce the Impacts of Snowdrifts on Illinois Freeways
    Design of Living Barriers To Reduce the Impacts of Snowdrifts on Illinois Freeways
    Petrie, John ;
    Qi, Yan
    2020-11-01 | PDF
    Blowing snow accounts for a large part of Illinois Department of Transportation’s total winter maintenance expenditures. This project aims to develop recommendations on the design and placement of living snow fences (LSFs) to minimize snowdrift on Illinois highways. The research team examined historical IDOT data for resource expenditures, conducte ...
  • Rails to Resilience Evaluating New Orleans and Baton Rouge Rail Terminals and Transit Links
    Rails to Resilience: Evaluating New Orleans and Baton Rouge Rail Terminals and Transit Links
    Tolford, Tara M. ;
    Amdal, James
    2020-11-01 | PDF
    This study evaluates the multimodal linkages to and opportunities for proposed terminal sites for a potential future passenger rail connection between Baton Rouge and New Orleans, Louisiana. The project included a comprehensive analysis of recent planning processes and documents and distribution of a statewide survey aimed at understanding ridershi ...
  • Developing Markets for Zero Emission Vehicles in Short Haul Goods Movement
    Developing Markets for Zero Emission Vehicles in Short Haul Goods Movement
    Giuliano, Genevieve ;
    Dessouky, Maged
    2020-11-01 | PDF
    The potential for zero emission heavy duty trucks (ZEHDTs) is examined via simulation modeling, case studies, interviews and a survey. Impacts of ZEHDTs on freight operations are assessed. Costs and benefits of using diesel, natural gas hybrid and battery electric vehicles are compared for 2020, 2025, 2030. ZE applications are limited in the near t ...
  • Davis Amtrak Station Pilot Project Evaluation Informing Long Term Solutions to the Davis Amtrak Station Access Barriers
    Davis Amtrak Station Pilot Project Evaluation: Informing Long Term Solutions to the Davis Amtrak Station Access Barriers
    Pike, Susan
    ORCID ICON IMG
    2020-11-01 | PDF
    This study investigates barriers to accessing the Davis Amtrak Station to inform a program designed to increase access to the station with on-demand alternatives. The program aims to decrease private vehicle use to access the station and for travel to locations outside of Davis through partnerships with a carpool/rideshare app, as well as a ridehai ...
  • RealWorld Use of Automated Driving Systems and their Safety Consequences A Naturalistic Driving Data Analysis
    Real-World Use of Automated Driving Systems and their Safety Consequences: A Naturalistic Driving Data Analysis
    Kim, Hyungil ;
    Song, Miao
    2020-11-01 | PDF
    Automated driving systems (ADS) have the potential to fundamentally change transportation, and a growing number of these systems have entered the market and are currently in use on public roadways. However, drivers may not use ADS as intended due to misunderstandings about system capabilities and limitations. Moreover, the real-world use and effect ...
  • The Impact of the Louisiana Rail Infrastructure A System Analysis and Plan
    The Impact of the Louisiana Rail Infrastructure: A System Analysis and Plan
    Stich, Bethany ;
    Tian, Guang
    2020-11-01 | PDF
    The University of New Orleans Transportation Institute assisted the Louisiana Department of Transportation and Development (DOTD) to develop the State Rail Plan for the purpose of guiding the state’s freight and passenger rail transportation planning activities and project development plans over the next 20 years. This plan describes the state’s ex ...
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