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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 4821 - 4840 of 36958 results
  • Illinois Highway Materials Sustainability Efforts 2019
    Illinois Highway Materials Sustainability Efforts 2019
    Morse, Kelly L.
    2020-08-13 | PDF
    The Illinois Department of Transportation (IDOT) continues to use a variety of reclaimed and recycled materials in highway construction. Recycled materials are used in highway construction to supplement aggregates, concrete, hot-mix asphalt (HMA), steel, and sealants, as well as for soil modification and pavement markings. This report summarizes th ...
  • Development of Pavement Design and Investigation Strategies for NonInterstate Routes
    Development of Pavement Design and Investigation Strategies for Non-Interstate Routes
    Huynh, Nathan ;
    Mullen, Robert
    2020-08-11 | PDF
    This project investigated the state-of-the-practice on conducting field investigation for rehabilitation of non-interstate routes and whether field investigation is cost effective for the SCDOT. An online survey was conducted to determine the state-of-the-practice on pavement rehabilitation for non-interstate routes. A total of 29 responses were re ...
  • Probability of Detection of Electric Vehicles with Added Warning Sounds
    Probability of Detection of Electric Vehicles with Added Warning Sounds
    Roan, Michael J ;
    Neurauter, Luke
    2020-08-05 | PDF
    Detection performance as a function of distance was measured for 16 subjects who pressed a button upon aurally detecting the approach of an electric vehicle. The vehicle was equipped with loudspeakers that broadcast one of four additive warning sounds. Other test conditions included two vehicle approach speeds [10 and 20 km/h (kph)] and two backgro ...
  • Improving Connectivity Innovative FiberReinforced Polymer Structures for Wildlife Bicyclists andor Pedestrians A Report for Tasks 14
    Improving Connectivity: Innovative Fiber-Reinforced Polymer Structures for Wildlife, Bicyclists, and/or Pedestrians A Report for Tasks 1–4
    Bell, Mat ;
    Ament, Rob
    2020-08-04 | PDF
    Ecologists and engineers are constantly exploring new methods and adapting existing techniques to improve mitigation measures that increase motorist safety and wildlife species conservation. Crossing structures, combined with fences, are some of the most highly effective mitigation measures that are employed around the world due to their ability to ...
  • Development of Advanced WeighInMotion AWIM System for Effective Enforcement of Overweight Trucks to Reduce their Socioeconomic Impact on Major Highways
    Development of Advanced Weigh-In-Motion (A-WIM) System for Effective Enforcement of Overweight Trucks to Reduce their Socioeconomic Impact on Major Highways
    Nassif, Hani ;
    Ozbay, Kaan
    2020-08-01 | PDF
    The main objectives of this project are (1) to evaluate the infrastructure damages incurred by the overweight (OW) permit trucks, (2) to compare the permit policies between states to check understand how each state handles the OW permits, and (3) to develop the methodology to minimize the error in weighing the truck weight (gross vehicle weight and ...
  • Exploring Partnership Between Transit Agency and Shared Mobility Company An Incentive Program for AppBased Carpooling
    Exploring Partnership Between Transit Agency and Shared Mobility Company: An Incentive Program for App-Based Carpooling
    Shen, Qing ;
    Wang, Yiyuan
    2020-08-01 | PDF
    How should public transit agencies deliver mobility services in the era of shared mobility? Previous literature recommends that transit agencies actively build partnerships with mobility service companies from the private sector, yet public transit agencies are still in search of a solid empirical basis to help envision the consequences of doing so ...
  • Smart Multimodal Transportation Solutions for North Huntingdon Township in Response to Roadway Construction Projects on Route30
    Smart Multi-modal Transportation Solutions for North Huntingdon Township in Response to Roadway Construction Projects on Route-30
    Ma, Wei ;
    Qian, Sean
    2020-08-01 | PDF
    U.S. Route 30 (US30) in the North Huntingdon Township (NHT) serves as a main commercial corridor as well as a regional arterial. Part of a growing area, there are significant challenges in regards to congestion, safety, travel demand and mobility. There is a great need to provide a holistic mobility solution including driving, transit usage, park-a ...
  • SiteSpecific Seismic Ground Motion Analyses for NorthEast Arkansas
    Site-Specific Seismic Ground Motion Analyses for North-East Arkansas
    Hossain, Zahid ;
    Elsayed, Ashraf
    2020-08-01 | PDF
    The New Madrid Fault Zone (NMFZ) passes through the middle of northeast Arkansas (NEA), which is located in the western part of the upper Mississippi Embayment (ME) area. With the history of major earthquakes and the merge of ME and NMFZ in the region, the understanding of the nature of ground responses and prospects of liquefaction hazards in NEAR ...
  • Optimal Density Restrictions in the Los AngelesLong Beach CSA
    Optimal Density Restrictions in the Los Angeles-Long Beach CSA
    Parkhomenko, Andrii ;
    Delventhal, Matthew J.
    2020-08-01 | PDF
    We build a quantitative general equilibrium model of residence and employment choices under municipal density limits. Developers decide where to build, businesses decide where to offer jobs, and workers decide where to live and work given exogenous location characteristics, transport infrastructure, and zoning restrictions. We use employment, real ...
  • Institutions and Information Technology To Support Multimodal Integration in Employment Transportation
    Institutions and Information Technology To Support Multimodal Integration in Employment Transportation
    McAndrews, Carolyn A. ;
    Allon, Alexander
    2020-08-01 | PDF
    Transportation disadvantage is an underlying cause of low household earnings. In our recent experience implementing a shared ride program with taxicabs and vanpools we have found that transportation disadvantage cannot be solved by mobility alone. In our pilot project, we recognized a need for a type of organization—similar to a Transportation Mana ...
  • Combining Truck and Vessel Tracking Data to Estimate Performance and Impacts of Inland Ports
    Combining Truck and Vessel Tracking Data to Estimate Performance and Impacts of Inland Ports
    Hernandez, Sarah V ;
    Asborno, Magdalena I
    2020-08-01 | 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 ...
  • Development of Vehicle Fleet Mix Forecast Models for Life Cycle Cost Forecast for Tunnel Ventilation Systems
    Development of Vehicle Fleet Mix Forecast Models for Life Cycle Cost Forecast for Tunnel Ventilation Systems
    Guo, Weihong ;
    Jafari, Mohsen A
    2020-08-01 | PDF
    Tunnel ventilation systems must be able to provide adequate air quality during normal operation in addition to supporting self-evacuation and rescue efforts during emergency incidents. To maintain low or negligible levels of tailpipe emission gases during normal operation, the operational cost of tunnel ventilation systems can be high. As the vehic ...
  • Signal Timing Strategy for Displaced Left Turn Intersections
    Signal Timing Strategy for Displaced Left Turn Intersections
    Qi, Yi ;
    Zhao, Qun
    2020-08-01 | PDF
    Conventional intersection design has met the challenges of increasing congestion and traffic delays. To solve this problem, transportation planners and engineers have proposed a variety of innovative intersection designs. Among these innovative intersection designs, displaced left turn (DLT) intersection has been implemented in 12 states in the USA ...
  • Transportation Equity for RITI Communities in Autonomous and Connected Vehicle Environment Opportunities and Barriers
    Transportation Equity for RITI Communities in Autonomous and Connected Vehicle Environment: Opportunities and Barriers
    Sorour, Sameh ;
    Abdel-Rahim, Ahmed
    2020-08-01 | PDF
    This report summarizes the results of a study conducted to document the safety and mobility needs of Rural, Isolated, Tribal, or Indigenous (RITI) communities and to identify autonomous and connected vehicle technology that have the potential of addressing these needs. A review of the administrative structure for the five Native American Tribes in ...
  • Guide to Developing a Vision Zero Plan
    Guide to Developing a Vision Zero Plan
    LaJeunesse, Seth ;
    Naumann, Rebecca B
    2020-08-01 | PDF
    A Vision Zero Plan provides direction specifically around the vision to eliminate all traffic-related deaths and severe injuries in the community. The purpose of this Guide is to assist communities in developing a Vision Zero Plan. The Guide describes the major steps involved in developing a plan, with an emphasis on best practices. It is also usef ...
    Supporting Files
  • Assessment of Compatibility of Mineral Aggregates and Binders Used in Highway Construction and Maintenance Projects
    Assessment of Compatibility of Mineral Aggregates and Binders Used in Highway Construction and Maintenance Projects
    Hossain, Zahid ;
    Elsayed, Ashraf
    2020-08-01 | PDF
    Stripping and delamination have been deemed as some of the major premature pavement distresses to most state Departments of Transportations (DOTs) and highway agencies including the Arkansas Department of Transportation (ARDOT). It is believed that the poor compatibility between asphalt binders and aggregates is one of the major reasons behind this ...
  • Protocols for Concrete Bridge Deck Protections and Treatments
    Protocols for Concrete Bridge Deck Protections and Treatments
    Bektas, Basak ;
    Albughdadi, Ahmed
    2020-08-01 | PDF
    The main objective of this research project was to develop a cost-effective life-cycle treatment plan for the preservation of Wisconsin bridge decks. The research team identified a comprehensive list of strategies through a review of current practice and department of transportation (DOT) policies and provided data-driven estimates of the performan ...
  • Optimizing the Geometric Configuration and Manufacturing Process of High Mast Illumination Poles
    Optimizing the Geometric Configuration and Manufacturing Process of High Mast Illumination Poles
    Montoya, Arturo ;
    Matamoros, Adolfo
    2020-08-01 | PDF
    This work presents the development of a high-fidelity model that accounts for the cumulative effect of welding and hot-dip galvanizing on the determining the resulting residual stresses and deformations induced during the manufacturing process of high mast illumination poles (HMIPs). This model is meant to elucidate the root causes of weld toe crac ...
  • Development of WeighinMotion Data Quality Control Algorithms and Procedures
    Development of Weigh-in-Motion Data Quality Control Algorithms and Procedures
    Chorzepa, Mi G ;
    Kim, S. Sonny
    2020-08-01 | PDF
    This report recommends a Weigh-In-Motion (WIM) data quality control (QC) process that will assist in delivering higher quality WIM data and continuously improving WIM program performance as its user base grows within the Georgia Department of Transportation (GDOT). Specifically, this research study serves to establish a procedure for off-site offic ...
  • Development of Guidelines for Implementation of Contraflow LeftTurn Lanes at Signalized Intersections
    Development of Guidelines for Implementation of Contraflow Left-Turn Lanes at Signalized Intersections
    Qi, Yi ;
    Zhao, Qun
    2020-08-01 | PDF
    An innovative intersection design, Contraflow left-turn lane (CLL), designed for increasing the left-turn capacity has been increasingly implemented at the signalized intersections. This study developed a systematic method for determining the length of CLL and the signal timing plan for implementing CLL at signalized intersections. The signal timin ...
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