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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 7561 - 7580 of 36114 results
  • Do Consumer Expenditures Affect the Demand for Driving
    Do Consumer Expenditures Affect the Demand for Driving?
    Manville, Michael ;
    Smart, Michael
    2017-10-01 | PDF
    We examine why American driving fell between 2004 and 2014, and consider how planners should respond. We weigh two competing explanations: that the driving downturn was caused by “Peak Car”— a voluntary shift away from driving, and that it was caused by economic hardship. We analyze an array of aggregate data on travel, incomes, debt, public opinio ...
  • MultiBeam Sonar Infrastructure Mapping Research
    Multi-Beam Sonar Infrastructure Mapping Research
    Lovelace, Barritt ;
    DeWall, Petronella
    2017-10-01 | PDF
    The hydraulics unit in MnDOT’s bridge office applied for a research grant to develop in-house underwater acoustic 3D imaging capabilities. This research report presents both stationary and mobile scanning techniques, outlines the setup of both systems, discusses field operations, summarizes the data analysis and post-processing of images, and revie ...
    Supporting Files
  • Rockfall Hazard Process Assessment Implementation Report
    Rockfall Hazard Process Assessment: Implementation Report
    Beckstrand, Darren L. ;
    Jackson, Jeff
    2017-10-01 | PDF
    The Montana Department of Transportation (MDT) commissioned a new research program to improve assessment and management of its rock slope assets. The Department implemented a Rockfall Hazard Rating System (RHRS) program in 2005 and wished to add value to that existing program by adding new slopes and reassessing select ones, incorporating new ratin ...
  • Evaluation of Secondary Consolidation Settlement Associated With Embankment Construction for FastPaced Transportation Projects in Utah
    Evaluation of Secondary Consolidation Settlement Associated With Embankment Construction for Fast-Paced Transportation Projects in Utah
    Bartlett, Steven F ;
    Lawton, Evert C.
    2017-10-01 | PDF
    This report discusses the design and implementation of surcharging technology in terms of the required laboratory, field and engineering evaluations. It is hoped that such information will provide a more consistent and technically defensible rationale for deploying this technology on highway projects constructed atop soft soils. Surcharging or prel ...
  • The impact of the New Panama Canal Locks on Texas ports and the Texas economy
    The impact of the New Panama Canal Locks on Texas ports and the Texas economy.
    Harrison, Robert ;
    Boske, Leigh B.
    2017-10-01 | PDF
    This report examines the first year transits through the new Panama Canal locks and its impact on Texas deep water ports. It finds that the canal is operating efficiently and can accommodate 14,000 TEU containerships and bulk vessels up to 125,000 tons. This strengthens the position of Texas ports, both in terms of import and export supply chains. ...
  • Field Implementation of Handheld FTIR Spectrometer for Polymer Content Determination and for Quality Control of RAP Mixtures Research Project Capsule
    Field Implementation of Handheld FTIR Spectrometer for Polymer Content Determination and for Quality Control of RAP Mixtures : Research Project Capsule
    Wasiuddin, Nazimuddin M.
    2017-10-01 | PDF
    The purpose of this research study is to determine if the implementation of FTIRS in Louisiana for determining polymer content in asphalt mixtures and for quality control of recycled asphalt mixtures is feasible. The ultimate objective is to develop a FTIRS test procedure for the quality control of asphalt mixtures.
  • Domestic Airline Fares Consumer Report Second Quarter 2017 Passenger and Fare Information
    Domestic Airline Fares Consumer Report: Second Quarter 2017 Passenger and Fare Information
    United States. Department of Transportation
    2017-10-01 | Domestic Airline Fares Consumer Report | PDF
    Each month the Department of Transportation releases an Air Travel Consumer Report that includes information about various service quality elements, including flight delays, mishandled baggage, over sales, and a variety of other types of consumer complaints.In response to an increasing number of inquiries from consumers about domestic airline price ...
  • Optimal Ventilation Control in Complex Urban Tunnels with MultiPoint Pollutant Discharge
    Optimal Ventilation Control in Complex Urban Tunnels with Multi-Point Pollutant Discharge
    Gao, H. Oliver ;
    Tan, Zhen
    2017-10-01 | PDF
    Zhen Tan (ORCID ID 0000-0003-1711-3557) H. Oliver Gao (ORCID ID 0000-0002-7861-9634) We propose an optimal ventilation control model for complex urban vehicular tunnels with distributed pollutant discharge points. The control problem is formulated as a nonlinear integer program that aims to minimize ventilation energy cost while meeting multiple ai ...
  • Contamination of Urban Surface Water by Vehicle Emissions
    Contamination of Urban Surface Water by Vehicle Emissions
    Davidson, Cliff I. ;
    Johnson, Alexander J.
    2017-10-01 | PDF
    Combined sewer overflows (CSOs) are a water management issue for Onondaga County and the city of Syracuse, NY. To reduce them, the County is investing in green infrastructure (GI). GI technologies such as green roofs, rain gardens, and bioswales are designed to reduce runoff from impervious urban surfaces, which can decrease the number of CSO event ...
  • Safety Concepts for Workers from an OSHA Perspective
    Safety Concepts for Workers from an OSHA Perspective
    Al-shabbani, Zamaan ;
    Sturgill Jr., Roy E.
    2017-10-01 | PDF
    Highway construction and maintenance workers face numerous hazards on job sites, many of which are unique by industry standards. Despite the exposure of state transportation agency employees and contractors to these hazards, there are few safety standards, regulations, programs that directly target the sector aimed at prevention and mitigation. To ...
    Supporting Files
  • Domestic Airline Fares Consumer Report First Quarter 2017 Passenger and Fare Information
    Domestic Airline Fares Consumer Report: First Quarter 2017 Passenger and Fare Information
    United States. Department of Transportation
    2017-10-01 | Domestic Airline Fares Consumer Report | PDF
    Each month the Department of Transportation releases an Air Travel Consumer Report that includes information about various service quality elements, including flight delays, mishandled baggage, over sales, and a variety of other types of consumer complaints. In response to an increasing number of inquiries from consumers about domestic airline pric ...
  • Synthesis of Automated Vehicle Legislation
    Synthesis of Automated Vehicle Legislation
    Hubbard, Sarah M
    2017-10-01 | PDF
    This report provides a synthesis of issues addressed by state legislation regarding automated vehicles (AV); AV technologies are rapidly evolving and many states have developed legislation to govern AV testing and deployment and to assure safety on public roads. Topics include license and registration, operator requirements, insurance and liability ...
  • Inservice performance evaluation and monitoring of a hybrid composite beam bridge system final report
    In-service performance evaluation and monitoring of a hybrid composite beam bridge system : final report.
    Harris, Devin K. ;
    Civitillo, John
    2017-10-01 | PDF
    The hybrid composite beam (HCB) technology has been presented as a system for short and medium span beam bridges as an alternative to traditional materials such as concrete and steel. An HCB consists of a concrete tied arch encased in a fiber reinforced polymer shell. When compared to traditional materials, the HCB system is lighter in weight, whic ...
  • Hydraulic and environmental behavior of recycled asphalt pavement in highway shoulder applications
    Hydraulic and environmental behavior of recycled asphalt pavement in highway shoulder applications
    Aydilek, Ahmet ;
    Mijic, Zorana
    2017-10-01 | PDF
    Hydraulic conductivity of seven recycled asphalt pavement materials (RAPs) was evaluated through a series of constant-head tests, while their leaching potential was determined through batch leach tests and column leach tests. The contaminant transport in surface waters as a function of distance was numerically simulated. Laboratory test results ind ...
  • Updating Management and Inspection Practices for Large Bridges Research Spotlight
    Updating Management and Inspection Practices for Large Bridges : Research Spotlight
    Croop, Bradly C.
    2017-10-01 | PDF
    For structures both large and small, MDOT bridge inspectors follow guidelines in the AASHTO Manual for Bridge Element Inspection (MBEI). While effective for small bridges, the MBEI works less well for large bridges, which often include many types of material and complex interconnections between elements. In this pooled-fund research project, MDOT p ...
  • Improved analysis tool for concrete pavement project summary
    Improved analysis tool for concrete pavement : [project summary].
    Tia, Mang
    2017-10-01 | PDF
    University of Florida researchers developed 3D-FE models to more accurately predict the behavior of concrete slabs. They also followed up on a project to characterize strain gauge performance for a Florida Department of Transportation (FDOT) concrete pavement test road.
  • Last Mile Commercial Package Delivery as a Revenue Generation Tool for Rural Public Transportation Systems in Wyoming
    Last Mile Commercial Package Delivery as a Revenue Generation Tool for Rural Public Transportation Systems in Wyoming
    Clouser, Karalyn ;
    Chaudhari, Jaydeep
    2017-10-01 | PDF
    Last mile delivery has emerged as the most important segment in supply chain management of the package deliveries. It is a daunting task to achieve for the manufacturers to sellers at local, regional, state, national, and global level. Many e-commerce giants are creating its own delivery service in order to reduce shipping costs and improve shippin ...
  • Quantifying the Impacts of Real Time Travel Information on Route Choice Behavior Using Psychophysiological Analysis
    Quantifying the Impacts of Real Time Travel Information on Route Choice Behavior Using Psychophysiological Analysis
    Agrawal, Shubham ;
    Benedyk, Irina
    2017-10-01 | PPT
    Quantifying impacts of real-time travel information on route choice behavior using psychophysiological analysis: A driving simulator-based study [Paper presentation]. INFORMS Annual Meeting, Houston, TX.
  • Identifying the Transportation Preferences of a Highly Skilled Workforce Final Report
    Identifying the Transportation Preferences of a Highly Skilled Workforce : Final Report.
    Ettelman, Ben ;
    Cardenas, James
    2017-10-01 | PDF
    Economic development professionals cite access to a highly skilled workforce as being one of, if not the most, important factors that businesses cite when choosing where to locate. This is because the United States, including Texas, is experiencing high demand in fields that require highly skilled workers. In addition, with recent and continual adv ...
  • Establishment of effective control factors to achieve federal enforcement consistency with the Highway Beautification Act research summary
    Establishment of effective control factors to achieve federal enforcement consistency with the Highway Beautification Act : [research summary].
    Dulebenets, Maxim A.
    ORCID ICON IMG
    2017-10-01 | PDF
    One of the pleasures of driving in Florida is enjoying a beautiful and diverse landscape. Thequality of this view is critical to a state’s image for visitors and those considering relocation aswell as to residents’ enjoyment. To ensure the continued beauty of our highways, PresidentLyndon Johnson signed the Highway Beautification Act (HBA) in Octob ...
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