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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 5621 - 5640 of 36054 results
  • Development of a Workshop on Automated Vehicle Technologies
    Development of a Workshop on Automated Vehicle Technologies
    Davis, Brian ;
    Johnson, Reed
    2019-07-01 | PDF
    Connectivity and automation in vehicles have the potential to change nearly every aspect of our transportation system. Vehicles with these capabilities are already being tested on public roads and are beginning to enter the national fleet. These vehicles have the potential to bring numerous benefits to the public, but these benefits come with trade ...
  • Examining Optimal Sight Distances at Rural Intersections
    Examining Optimal Sight Distances at Rural Intersections
    Morris, Nichole L. ;
    Craig, Curtis M.
    2019-07-01 | PDF
    Decisions made regarding driver sight distance at rural intersections are complex and require considerations for safety, efficiency, and environmental factors. Sight distance, cross-traffic velocity, and vehicle placements significantly affect driver judgment and behavior at these intersections. A series of rural, two-lane thru-STOP simulated inter ...
  • Evaluation Criteria for Safe Routes to School Projects
    Evaluation Criteria for Safe Routes to School Projects
    Burbidge, Shaunna K.
    2019-07-01 | PDF
    Walking, which was once ubiquitous, now makes up only a small minority of school trips. The main reason students no longer walk and bike to school is parental concerns about safety. This research aims to create a new Safe Routes to School funding application, guided by international best-practices focusing on return on investment. Doing so will imp ...
  • Spatial Attention Mechanism for Weakly Supervised Fire and Traffic Accident Scene Classification
    Spatial Attention Mechanism for Weakly Supervised Fire and Traffic Accident Scene Classification
    Yin, Zhaozheng ;
    Qin, Ruwen
    2019-06-30 | PDF
    During the past ten years, on average there were nearly 16.5 thousands of hazardous materials (hazmat) transport incidents per year resulting in $82 millions of damages. Prompt, accurate, objective assessment on hazmat incidents is important for the first-responders to take appropriate actions timely, which will reduce the damage of hazmat incident ...
  • Cost-Effective Methods to Retrofit Metal Culverts Using Composites [supporting datasets]
    Reda Taha, M. M. ;
    Halter, Susan Bogus
    2019-06-30 | ZIP
    One of the current pressing problems for all state departments of transportation (DOTs) is the corrosion-oriented deterioration of existing metal culverts. These metal culverts typically are designed for a life of 50 years. However, corrosion is making them last no longer than 30 years. A glass fiber reinforced polymers (GFRP) pipe section has been ...
    Dataset Supporting Files
  • Professional Capacity Building for Communications Phase 4
    Professional Capacity Building for Communications - Phase 4
    Koon, Leann ;
    Galarus, Douglas E.
    2019-06-28 | PDF
    Rural communication engineering remains a mission critical skill that most engineers in the state have limited experience with. Lacking these skills, engineers and technicians have a difficult time designing and maintaining reliable and robust communication networks for rural Intelligent Transportation System (ITS) field equipment. As new technolog ...
  • Traffic Signal Vehicle Detection One Size Does Not Fit All
    Traffic Signal Vehicle Detection, One Size Does Not Fit All
    Uddin, Waheed ;
    Sultana, Salma
    2019-06-28 | PDF
    Traffic signals are traffic control devices that detect vehicles at intersections and assign right of way to road users of all types (including motorized and non-motorized vehicles and pedestrians). Vehicle detection sensors used today include inductive wire loops, video, radar, and magnetometers. Although used extensively, the performance of non-i ...
  • Macroscopic Fundamental Diagram Approach to Traffic Flow With Autonomous/Connected Vehicles [supporting datasets]
    Whalin, Robert W ;
    Hu, Guojing
    2019-06-27 | ZIP
    Connected and autonomous vehicles (CAVs) have the capability to acquire real-time information from each other while human-driven vehicles (HVs) are standalone in the vehicle roadway navigation system. The information asymmetry poses great challenges in managing and controlling vehicles in the mixed traffic. To address such challenges, a new lane-ch ...
    Dataset Supporting Files
  • A Connected VehicleBased Adaptive Navigation Algorithm
    A Connected Vehicle-Based Adaptive Navigation Algorithm
    Wang, Yinhai ;
    Zhu, Wenbo
    2019-06-27 | PDF
    Connected vehicle (CV) technology leads to a system in which vehicles can communicate with other vehicles, transportation infrastructure, and other devices with communication capabilities. With increases in data availability, there is a great need for algorithms to process and utilize the data to improve system efficiency and mobility. This study d ...
  • Waterless Bridge Joint Cleaning
    Waterless Bridge Joint Cleaning
    Klinikowski, David J ;
    Johns, William D
    2019-06-25 | PDF
    The purpose of this project was to investigate, develop, and demonstrate a “waterless” method of cleaning sealed bridge deck joints. In this application, waterless refers to minimal use of water and reasonable control and collection of associated runoff and debris. The proposed methodology is best suited to a closed expansion joint that is sealed a ...
  • TASAS Traffic Accident Surveillance and Analysis System and Injury Data Base Development
    TASAS (Traffic Accident Surveillance and Analysis System) and Injury Data Base Development
    Fyhrie, Patricia ;
    Hovhannisyan, Grachya
    2019-06-19 | PDF
    The California Highway Patrol reports on motor vehicle accidents on California Highways in Traffic Collison Reports (TCRs). Caltrans processes approximately 200,000 of such reports on a yearly basis to extract critical data that is used for safety evaluation and planning purposes. Caltrans Traffic Accident Surveillance and Analysis System (TASAS) b ...
  • CostEffective Methods to Retrofit Metal Culverts Using Composites
    Cost-Effective Methods to Retrofit Metal Culverts Using Composites
    Taha, M. M. Reda ;
    Halter, Susan Bogus
    2019-06-15 | PDF
    One of the current pressing problems for all state departments of transportation (DOTs) is the corrosion-oriented deterioration of existing metal culverts. These metal culverts typically are designed for a life of 50 years. However, corrosion is making them last no longer than 30 years. A glass fiber reinforced polymers (GFRP) pipe section has been ...
  • Integrating Crowdsourced Data with Traditionally Collected Data to Enhance Estimation of Bicycle Exposure Measure
    Integrating Crowdsourced Data with Traditionally Collected Data to Enhance Estimation of Bicycle Exposure Measure
    Kwigizile, Valerian ;
    Oh, Jun-Seok
    2019-06-13 | PDF
    Although many transportation agencies have invested substantially in efforts to improve cycling environments, limitations on methodologies used to estimate bicycle exposure (i.e., volume) continue to impact the decision process. Traditional methods for measuring bicycle volume have been proven to be challenging and costly, especially when planning ...
  • LRRB Strategic Plan 20192024
    LRRB Strategic Plan 2019–2024
    University of Minnesota. Center for Transportation Studies  ...
    2019-06-06 | PDF
    The goals and strategies of this Strategic Plan (2019 – 2024) address the major phases of the lifecycle of LRRB’s research activities.
  • Modeling and Control of HOT Lanes Phase II
    Modeling and Control of HOT Lanes - Phase II
    Kurzhanskiy, Alex A.
    ORCID ICON IMG
    2019-06-03 | PDF
    This project extended the driver behavior model with a second, alternative parameterization of HOT violation. To accompany ready-to-pay model, this project developed a concept of a willing-to-violate model. This model describes the portion of non-High Occupancy Vehicle (HOV) drivers that are willing to misrepresent themselves as HOVs to gain free a ...
  • Structural Coefficient for High Polymer Modified Asphalt Mixes
    Structural Coefficient for High Polymer Modified Asphalt Mixes
    Habbouche, Jhony ;
    Hajj, Elie Y
    2019-06-01 | PDF
    Mixes This report summarizes the information and findings from this study aiming to determine the structural coefficient for high polymer (HP) asphalt concrete (AC) mixes. In this research, HP AC mixes are defined as asphalt mixtures manufactured using asphalt binders modified with Styrene-Butadiene-Styrene (SBS) at the approximate rate of 7.5% by ...
  • Modeling the Effect of a Road Construction Project on Transportation System Performance
    Modeling the Effect of a Road Construction Project on Transportation System Performance
    Kukkapalli, Venu Madhav ;
    Pulugurtha, Srinivas S.
    2019-06-01 | PDF
    Road construction projects create physical changes on roads that result in capacity reduction and travel time escalation during the construction project period. The reduction in the posted speed limit, the number of lanes, lane width and shoulder width at the construction zone makes it difficult for the road to accommodate high traffic volume. Ther ...
  • Modeling the Influence of Land Use Developments on Transportation System Performance
    Modeling the Influence of Land Use Developments on Transportation System Performance
    Mane, Ajinkya S ;
    Pulugurtha, Srinivas S.
    2019-06-01 | PDF
    The growth in the urban population has influenced urban sprawl, congestion, and subsequently, delays on the existing road infrastructure. New land use developments occur in every part of the city due to rapid economic development and to meet the demand for better living standards. The induced traffic volume generated from such land use developments ...
  • Travelers Rationality in Anticipatory Online Emergency Response
    Travelers' Rationality in Anticipatory Online Emergency Response
    Park, Hyungjun
    2019-06-01 | PDF
    In this study, the simulation of traffic demand and flow behaviors is integrated with optimization of emergency resource allocation to explore benefits to the travelers and emergency responders and to save lives, money, and time. This research fills the gaps in the rationality of travelers when unexpected events occur and improves the myopic dispat ...
  • Training Curricula for the Kentucky Transportation Cabinet Department of Highways
    Training Curricula for the Kentucky Transportation Cabinet Department of Highways
    Albright, Nancy ;
    Gibson, Bryan
    2019-06-01 | PDF
    Most state departments of transportation (DOTs) offer their employees professional development opportunities (e.g., training courses) so they can build their expertise and in doing so facilitate agency efforts to fulfill their business mandates. The Kentucky Transportation Cabinet (KYTC) is no different in this regard. While professional developmen ...
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