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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 4921 - 4940 of 36908 results
  • Transportation Infrastructure Asset Damage Cost Recovery Correlated with Shale OilGas Recovery Operations in Louisiana
    Transportation Infrastructure Asset Damage Cost Recovery Correlated with Shale Oil/Gas Recovery Operations in Louisiana
    Wu, Zhong ;
    Liu, Yilong
    2020-07-01 | PDF
    The rapid growth of shale gas exploration imposed a large number of heavy truck trips on Louisiana roadways. It is necessary to estimate the impact of the shale-gas related traffic. This study aimed to estimate the impact of the shale-gas related overweight truck trips on Louisiana roadways at the network and project level. RStudio software was emp ...
  • Evaluating the Use of Recycled and Sustainable Materials in SelfConsolidating Concrete for Underground Infrastructure Applications
    Evaluating the Use of Recycled and Sustainable Materials in Self-Consolidating Concrete for Underground Infrastructure Applications
    Mazari, Mehran ;
    Aval, Siavash F
    2020-07-01 | PDF
    Self-Consolidating Concrete (SCC), also known as self-compacting concrete, is a type of hydraulic cement concrete that easily forms around the reinforcement without segregation. The use of recycled fibers in the SCC mix, affect the compressive strength, tensile strength and crack initiation and propagation. The main objective of this study was to i ...
  • An Integrated Approach to Capture Construction Workers Response towards Safety Alarms using Wearable Sensors and Virtual Reality
    An Integrated Approach to Capture Construction Workers’ Response towards Safety Alarms using Wearable Sensors and Virtual Reality
    Zou, Zhengbo ;
    Bernardes, Suzana Duran
    2020-07-01 | PDF
    Despite the continuous efforts from federal and state agencies to improve safety at traffic work zones, incidents continue to occur, resulting in 675 fatalities in the U.S. during the last decade. Current safety measures at work zones, such as visual and audible alarms are ineffective due to the lack of calibration studies to evaluate the attention ...
  • Measures of Freight Network Resiliency During the Covid19 Pandemic
    Measures of Freight Network Resiliency During the Covid-19 Pandemic
    Hernandez, Sarah V ;
    Balthrop, Andrew
    2020-07-01 | PDF
    Recent headlines depict significant shifts in operations within the freight community in particular, e.g., HOS laws suspended at a national level for the first time in 82 years; national carriers shifting operations completely to grocery supply chains; fleet operators laying off employees in response to manufacturing closures. As a result of the cu ...
  • Putting Research Into Practice Learning Guides Preserve Expertise of Retiring Workers Summary
    Putting Research Into Practice: Learning Guides Preserve Expertise of Retiring Workers [Summary]
    Johnson, Peter ;
    Stading, Tanja
    2020-07-01 | PDF
    MnDOT developed three knowledge books that preserve the expertise of departing engineers with over 100 years of combined experience in key topic areas. The information is presented in a multimedia format using slides, documents and videos. The knowledge books represent the following topics: Concrete Pavement Rehabilitation and Repair (a slide prese ...
  • Assessment of Capacity Changes Due to Automated Vehicles on Interstate Corridors
    Assessment of Capacity Changes Due to Automated Vehicles on Interstate Corridors
    Heaslip, Kevin ;
    Goodall, Noah J.
    2020-07-01 | PDF
    This study was designed to assess capacity changes due to the introduction of connected vehicles (CVs) and automated vehicles (AVs) on Virginia freeway corridors. Overall, three vehicle types, including legacy vehicles (LVs); vehicles equipped with adaptive cruise control (ACC) (AVs); and vehicles equipped with cooperative adaptive cruise control ( ...
  • The Impact of Mobility as a Service on Transit Access
    The Impact of Mobility as a Service on Transit Access
    Chamberlin, Robert ;
    Haghighi, Nima
    2020-07-01 | PDF
    The emergence of a new mode, Mobility as a Service, has, to date, been most often characterized as the ridehailing mode provided by companies such as Uber and Lyft. If and when these private services evolve to incorporate autonomous vehicles, costs for this service will decrease, making it ever more competitive with other modes, both motorized and ...
  • Development of Specifications for HighPerformance Fiber Concrete for Nevada
    Development of Specifications for High-Performance Fiber Concrete for Nevada
    Malloy, Joe ;
    Sim, Chungwook 
    2020-07-01 | PDF
    The project stated with an extensive summary of construction practices and experiences from different state agencies. Besides, a detailed summary of state DOT specifications was included in the report. The main objective of this study was to develop a mix design adjustment method for High-Performance Fiber Reinforced Concrete (FRC) that would maint ...
  • Evaluating the Quality of Signal Operations Using Signal Performance Measures
    Evaluating the Quality of Signal Operations Using Signal Performance Measures
    Schultz, Grant G. ;
    Macfarlane, Gregory S
    2020-07-01 | PDF
    The Utah Department of Transportation (UDOT) has taken an active role in evaluating and monitoring traffic signal performance throughout the state of Utah. Automated traffic signal performance measures (ATSPM) have been adopted to collect data concerning the current and historical performance of signalized intersections to optimize mobility and man ...
  • Develop Guidelines and Design Program for HotMix Asphalts Containing RAP RAS and Other Additives through a Balanced MixDesign Process
    Develop Guidelines and Design Program for Hot-Mix Asphalts Containing RAP, RAS, and Other Additives through a Balanced Mix-Design Process
    Garcia, Vince ;
    Vieira, Denis
    2020-07-01 | PDF
    Asphalt mixtures must ideally exhibit acceptable cracking and rutting properties to perform well in major concern. Improving the durability and long-term performance of asphalt mixtures has become a major concern, especially with the rapidly increasing use of recycled materials, warm mix asphalt additives and modified binders. Given that available ...
  • Motor Carrier Hazardous Materials Safety Permits Study
    Motor Carrier Hazardous Materials Safety Permits Study
    Spiegel, Walter ;
    Grill, Lew
    2020-07-01 | PDF
    The Moving Ahead for Progress in the 21st Century Act (MAP-21) required the Federal Motor Carrier Safety Administration (FMCSA) to conduct a study of its Hazardous Materials Safety Permit (HMSP) program and report to Congress on the review’s findings. This report provides the detailed description of the research that supported the summary letter re ...
  • Testing Methods to Assess the Durability of Concrete Permeability Reducing Admixtures
    Testing Methods to Assess the Durability of Concrete Permeability Reducing Admixtures
    Riding, Kyle A ;
    Tibbetts, Caitlin M.
    2020-07-01 | PDF
    Hydrophobic pore blocking admixtures and crystalline admixtures are permeability-reducing admixtures (PRAs) marketed to reduce water ingress into and increase the service life of reinforced concrete. Because corrosion of steel reinforcement is the main cause of deterioration and repair expenses for reinforced concrete structures owned by the Florid ...
  • Big Data Visualization and Spatiotemporal Modeling of Risky Driving
    Big Data Visualization and Spatiotemporal Modeling of Risky Driving
    Jahangiri, Arash ;
    Machiani, Sahar Ghanipoor
    2020-07-01 | PDF
    Statistical evidence shows the role of risky driving as a contributing factor in roadway collisions, highlighting the importance of identifying such driving behavior. With the advent of new technologies, vehicle kinematic data can be collected at high frequency to enable driver behavior monitoring. The current project aims at mining a huge amount o ...
  • Electric Fleet Adoption Strategies Addressing Storage and Infrastructure Needs
    Electric Fleet Adoption Strategies – Addressing Storage and Infrastructure Needs
    Raju, Arun S.K. ;
    Vu, Alexander
    2020-07-01 | PDF
    Significant electrification of the transportation sector is necessary for the State to achieve several important greenhouse gas (GHG) reduction and renewable energy targets. The State’s electricity generation and transmission capabilities must increase in order to meet the demand generated by increasing levels of fleet electrification. The increase ...
  • Congestion-Clearing Payments to Passengers [supporting dataset]
    Minett, Paul ;
    Niles, John S
    2020-07-01 | PDF
    Peak period motor vehicle traffic volume congests roads all over the world. This project hypothesizes implementing congestion- clearing payments to passengers as a permanent congestion-management solution. Ongoing congestion-free travel would be achieved by removing existing congestion, and absorbing (re)generated demand, at costs that would be exp ...
    Dataset Supporting Files
  • Idaho DMV Customer Web Portal Study
    Idaho DMV Customer Web Portal Study
    Keathley-Helil, Valerie ;
    Koo, Jeeyen
    2020-07-01 | PDF
    This research study looks at potential enhancements to Idaho’s DMV web portal. Researchers reviewed existing literature to extrapolate potential benefits of e-government services, documented existing DMV services offered by each U.S. state, analyzed current business processes, investigated current laws and practices governing e-signatures for vehic ...
  • Advancing Transformational Infrastructure Projects Across Political Boundaries in the Northeast
    Advancing Transformational Infrastructure Projects Across Political Boundaries in the Northeast
    Taylor, Marilyn ;
    Yaro, Robert
    2020-07-01 | PDF
    The South Ward is the working site for the Port of Newark, the Newark Liberty International Airport, and the intercity and commuter rail station that serves the airport. It is also home to an historic Olmsted Brothers park surrounded by contiguous older neighborhoods, including Dayton and Weequahic, where many individuals and households are struggl ...
  • Crowdsourcing Parking Data for Micromobility Vehicles
    Crowdsourcing Parking Data for Micromobility Vehicles
    MacKenzie, Don ;
    Ban, Xuegang (Jeff)
    2020-07-01 | PDF
    A surge in shared micromobility services has been accompanied by an increase in vehicle parking violations and associated public complaints. The parking infractions vary from annoying when parked on private property, to unseemly when parked inside a city park to downright unsafe when interfering with utilities or blocking an Americans with Disabili ...
  • Mobilizing Investment in Americas Transportation Infrastructure
    Mobilizing Investment in America’s Transportation Infrastructure
    Taylor, Marilyn Jordan ;
    Yaro, Robert
    2020-07-01 | PDF
    America urgently needs to invest in its infrastructure. This paper outlines the elements of a national transportation investment strategy for the United States. Key objectives for the research included achieving a state of good repair on existing transportation systems, adding new and innovative transportation capacity to the United States, anticip ...
  • CongestionClearing Payments to Passengers
    Congestion-Clearing Payments to Passengers
    Minett, Paul ;
    Niles, John S
    2020-07-01 | PDF
    Peak period motor vehicle traffic volume congests roads all over the world. This project hypothesizes implementing congestion-clearing payments to passengers as a permanent congestion-management solution. Ongoing congestion-free travel would be achieved by removing existing congestion, and absorbing (re)generated demand, at costs that would be expe ...
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