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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 4981 - 5000 of 36908 results
  • Uncertainty Quantification of Cyber Attacks on Connected Vehicles and Infrastructure (Part 1) [supporting datasets]
    Martin, James J ;
    Comert, Gurcan
    2020-06-08 | PDF
    Multiple studies have explored different forms of connected vehicle applications, such as queue warning and cooperative adaptive cruise control (CACC), in standard wireless access in vehicular environments (WAVE), and dedicated short-range communication (DSRC) network environments. A major focus of the ongoing research is to consider a hybrid vehic ...
    Dataset Supporting Files
  • VisionBased Sensor System for Site Monitoring WrongWay Driving Phase 1
    Vision-Based Sensor System for Site Monitoring: Wrong-Way Driving, Phase 1
    Lasky, Ty A. ;
    Yen, Kin
    2020-06-05 | PDF
    This report presents results for research on a Vision-Based Site Monitoring (VBSM) system for monitoring Wrong-Way Driving (WWD) events. This system integrates a camera, solar power panels, and a modem into a pole-mounted package for deployment on freeway exit ramps to monitor for WWD events. The system incorporates on-camera analytics for WWD dete ...
  • Transportation Equity Scorecard A Tool for Project Screening and Prioritization
    Transportation Equity Scorecard: A Tool for Project Screening and Prioritization
    Williams, Kristine M. ;
    Kramer, Jeff
    2020-06-03 | PDF
    Equity is a representation of fairness in the distribution of benefits and burdens. It is an important expectation of the public in transportation planning and project selection, as these activities can have significant equity impacts. Increasingly, metropolitan planning organizations (MPOs) and local governments are evaluating both plans and proje ...
  • Assessing CloseRange Photogrammetry as an Alternative for LiDAR Technology at UDOT Divisions
    Assessing Close-Range Photogrammetry as an Alternative for LiDAR Technology at UDOT Divisions
    Cross, Chandler ;
    Farhadmanesh, Mohammad
    2020-06-01 | PDF
    LiDAR (Light Detection and Ranging) is a mature and efficient technology currently used by various divisions of UDOT (asset management, traffic control, pavement, construction, etc.). Some of the current applications of LiDAR at UDOT (as well as other DOTs) include: asset management for roads and buildings, quality control of pavements and other in ...
  • Improving Transportation Information Resilience Error Estimation for Networked Sensor Data
    Improving Transportation Information Resilience: Error Estimation for Networked Sensor Data
    Fan, Yueyue ;
    Yang, Han
    2020-06-01 | PDF
    Nowadays, the effectiveness of any smart transportation management or control strategy would heavily depend on reliable traffic data collected by sensors. Two problems regarding sensor data quality have received attention: first, the problem of identifying malfunctioning sensors; second, reconstruction of traffic flow. Most existing studies concern ...
  • Freight Load Balancing and Efficiencies in Alternative Fuel Freight Modes
    Freight Load Balancing and Efficiencies in Alternative Fuel Freight Modes
    Ioannou, Petros ;
    Giuliano, Genevieve
    2020-06-01 | PDF
    The current freight transportation network is highly unbalanced as routing decisions are made by individual users without coordination. Certain routes may become congested when chosen based on current traffic information without any anticipation that if other users do the same, these routes are no longer the best. This project developed a centrally ...
  • Development of a LifeCycle Cost Analysis Tool for Improved Maintenance and Management of Bridges
    Development of a Life-Cycle Cost Analysis Tool for Improved Maintenance and Management of Bridges
    Alipour, Alice ;
    Shafei, Behrouz
    2020-06-01 | PDF
    The Moving Ahead for Progress in the 21st Century Act (MAP-21) of 2012 requires states to develop and implement a transportation asset management plan (TAMP) for their respective portions of the National Highway System (NHS). Life-cycle cost and risk management analyses must be included in a state’s TAMP. As defined in the 1998 Transportation Equit ...
  • The Impacts of Automated Vehicles on Center City Parking Demand
    The Impacts of Automated Vehicles on Center City Parking Demand
    Zhang, Michael ;
    Chai, Huajun
    2020-06-01 | PDF
    The potential for automated vehicles (AVs) to reduce parking in city centers has generated much excitement among urban planners. AVs could drop-off (DO) and pick-up (PU) passengers in areas where parking costs are high: personal AVs could return home or park in less expensive locations, and shared AVs could serve other passengers. Reduced on-street ...
  • Safety Benefits and Best Practices for Intersection Lighting
    Safety Benefits and Best Practices for Intersection Lighting
    Li, Yingfeng (Eric) ;
    Bhagavathula, Rajaram
    2020-06-01 | PDF
    Nighttime safety continues to be a major concern for transportation agencies across the country. Roadway lighting has been widely used as a countermeasure for nighttime crashes. However, safety engineers and researchers frequently lack effective tools when determining exactly how lighting should be optimized to maximize safety while conserving ener ...
  • Highway Safety Manual Training
    Highway Safety Manual Training
    Sun, Carlos ;
    Edara, Praveen K.
    2020-06-01 | PDF
    Safety has become an area of increasing focus in all aspects of transportation planning, design, construction, and operations. Transportation legislations, such as the SAFETEA-LU Act (2005) and the FAST Act (2015), have promoted data-driven safety analysis in various programs. The publication of the Highway Safety Manual (2010) and the Supplement ( ...
  • How Do Car Donation Programs Effect Travel Income and Healthcare Access Among Poor Families
    How Do Car Donation Programs Effect Travel, Income, and Healthcare Access Among Poor Families?
    Klein, Nicholas J.
    ORCID ICON IMG
    2020-06-01 | PDF
    What happens when you give poor families a car? For decades, scholars have suggested that giving poor families cars can help them move up the economic ladder, yet these programs have rarely been studied. My research will study changes in poor families’ lives when they receive a car from the largest vehicle donation program in the country. I intervi ...
  • Installation and Initial Evaluation of Paving Fabric Interlayers for Mitigating Reflective Cracking in Pavements
    Installation and Initial Evaluation of Paving Fabric Interlayers for Mitigating Reflective Cracking in Pavements
    Nair, Harikrishnan ;
    Habbouche, Jhony
    2020-06-01 | PDF
    Propagation of cracks from existing pavements into a new asphalt concrete overlay (reflective cracking) is a major problem for both rigid and flexible pavements. Reflective cracking in pavements compromises ride quality and reduces the service life of the pavement. Reflective cracking of the asphalt layer over jointed concrete pavement is a perenni ...
  • SegmentLevel Crash Risk Analysis for New Jersey Highways Using Advanced Data Modeling
    Segment-Level Crash Risk Analysis for New Jersey Highways Using Advanced Data Modeling
    Dimitrijevic, Branislav ;
    Khales, Sina Darban
    2020-06-01 | PDF
    Highway crashes are the most significant challenge to the goal of providing a safe and efficient highway transportation system. They result in significant societal toll reflected in numerous fatalities, personal injuries, property damage, and traffic congestion. To that end, much attention has been given to developing models to study and predict cr ...
  • Assessing Complete Street Strategies Using Microscopic Traffic Simulation Models
    Assessing Complete Street Strategies Using Microscopic Traffic Simulation Models
    Liu, Bernice ;
    Shams, Alireza
    2020-06-01 | PDF
    Authors of this research developed a traffic simulation model for the downtown San Jose network and evaluated five different street redesign and travel demand combinations. This model aids understanding of network-wide effects of changes in street design for local and regional agencies who are interested in implementing complete streets and/or one- ...
  • Matching the Speed of Technology With the Speed of Local Government Developing Codes and Policies Related to the Possible Impacts of New Mobility on Cities
    Matching the Speed of Technology With the Speed of Local Government: Developing Codes and Policies Related to the Possible Impacts of New Mobility on Cities
    Schlossberg, Marc ;
    Brinton, Heather
    2020-06-01 | PDF
    Advances in transportation technology such as the advent of scooter and bikeshare systems (micromobility), ridehailing, and autonomous vehicles (AV’s) are beginning to have profound effects not only on how we live, move, and spend our time in cities, but also on urban form and development itself. These new technologies are changing the systems of t ...
  • What Do Americans Think About Federal Tax Options to Support Transportation Results from Year Eleven of a National Survey
    What Do Americans Think About Federal Tax Options to Support Transportation? Results from Year Eleven of a National Survey
    Agrawal, Asha Weinstein ;
    Nixon, Hilary
    2020-06-01 | What Do Americans Think About Federal Tax Options to Support Transportation? | PDF
    This report summarizes the results from the eleventh year of a national public opinion survey asking U.S. adults questions related to their views on federal transportation taxes. A nationally-representative sample of 2,515 respondents completed the online survey between February 14 and 28, 2020. The questions test public opinions about raising the ...
  • Assessing the Variation of Curbside Safety at the City Block Level
    Assessing the Variation of Curbside Safety at the City Block Level
    Medury, Aditya ;
    Vlachogiannis, Dimitris
    2020-06-01 | PDF
    Investigating the dynamics behind the likelihood of vehicle crashes has been a focal research point in the transportation safety field for many years. However, the abundance of data in today's world generates opportunities for deeper comprehension of the various parameters affecting crash frequency. This study incorporates data from many different ...
  • Improving the Use of Crack Sealing to Asphalt Pavement in Louisiana
    Improving the Use of Crack Sealing to Asphalt Pavement in Louisiana
    Elseifi, Mostafa A. ;
    Mousa, Momen R
    2020-06-01 | PDF
    The use of crack sealing in Louisiana has been limited as studies conducted in the 1960s showed that the performance of this maintenance practice can be affected by shallow groundwater table conditions in the state. The objective of this study was twofold. First, this project quantified the short-term and long-term benefits of using crack sealing, ...
  • PerformanceBased Specifications of FiberReinforced Concrete with Adapted Rheology to Enhance Performance and Reduce SteelReinforcement in Structural Members
    Performance-Based Specifications of Fiber-Reinforced Concrete with Adapted Rheology to Enhance Performance and Reduce Steel-Reinforcement in Structural Members
    Khayat, Kamal H.
    ORCID ICON IMG
    2020-06-01 | PDF
    The main objective of this research is to propose novel materials for the construction and retrofitting of bridges, including Economical Crack-Free High-Performance Concrete (Eco-Bridge-Crete, or EBC) and Fiber-Reinforced Super-Workable Concrete (FR-SWC). The project seeks to optimize the coupled effect of fiber characteristics, expansive agent (EA ...
  • Equity Assessment of PlugIn Electric Vehicle Purchase Incentives With a Focus on Atlanta Georgia
    Equity Assessment of Plug-In Electric Vehicle Purchase Incentives With a Focus on Atlanta, Georgia
    Liu, Haobing ;
    Guensler, Randall
    2020-06-01 | PDF
    To help consumers overcome higher initial purchase costs of plug-in hybrid and battery-electric vehicles (collectively PEVs), and to help promote PEV adoption, government agencies and electric utilities have offered a variety of purchase and leasing incentives over time. While the PEV population has grown rapidly since 2011, the PEV market share an ...
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