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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 7821 - 7840 of 36114 results
  • Development of a 475mm No 4 NMS mixture research project capsule
    Development of a 4.75-mm (No. 4) NMS mixture : research project capsule.
    Salari, Saman
    2017-08-01 | PDF
    The objective of this project is to develop a 4.75-mm NMAS asphalt mixture for Louisiana roads, which will involve establishing target criteria for aggregate gradations, volumetric properties (e.g., air voids, VMA, VFA, and dust-to-binder ratio) and mechanical tests. Local aggregates and asphalt cements will be evaluated to determine the most econo ...
  • Economic analysis of public transportation in Reno Nevada final report
    Economic analysis of public transportation in Reno, Nevada : final report.
    Song, Shunfeng ;
    Rieger, Aaron
    2017-08-01 | PDF
    Access to public transit is important and beneficial economically and socially in numerous ways. Using economic and demographic variables from U.S. Census data, we have examined who is being served by public transit in Reno, as well as examined the flow of workers to their jobs to identify possible locations for expansion. We focus on areas with hi ...
  • Longterm infiltration capacity of different types of permeable pavements
    Long-term infiltration capacity of different types of permeable pavements.
    Barrett, Kirk R. ;
    Diallo, Mohamed
    2017-08-01 | PDF
    Permeable pavements such as porous asphalt, pervious concrete and permeable interlocking concrete pavers are relatively novel alternatives to conventional pavement that allow rain and snowmelt to infiltrate, thereby reducing runoff, flooding and nonpoint source pollution. A barrier to wider adoption of these runoff-reducing alternative pavements is ...
  • Evaluation of Equipment Production and Procurement Practices
    Evaluation of Equipment Production and Procurement Practices
    Todd, Michael
    2017-08-01 | PDF
    This report provides an exploration of procurement methods utilized by state and provincial agencies throughout North America to provide a comparative analysis to operations within the California Department of Transportation (Caltrans). The primary goal of this investigation is to explore comparable institutions that manage statewide fleets of vehi ...
  • Research peer exchange 2014
    Research peer exchange, 2014.
    Wisconsin. Dept. of Transportation
    2017-08-01 | PDF
    The WSDOT Research Peer Exchange was held in Olympia, Washington on May 13 and 14, 2014 and addressed Research Program and Project Management as described in the following paragraphs: Program Management There are numerous funding programs, standing committees, partnership opportunities, and project panels that address transportation research and pr ...
  • Tracking Bicyclists Route Choices Case Study The Ohio State University
    Tracking Bicyclists' Route Choices, Case Study : The Ohio State University
    Akar, Gulsah ;
    Park, Yujin
    2017-08-01 | PDF
    Bicycles have low access costs and moderate travel speeds, reduce congestion, help protect the environment and bring many health benefits (Clifton & Akar, 2009). Within these considerations, several researchers have explored the factors associated with bicycling choice to understand the needs of bicyclists and increase bicycle mode share. Existing ...
  • 2017 safety belt usage survey in Kentucky
    2017 safety belt usage survey in Kentucky.
    Agent, Kenneth R. ;
    Green, Eric R.
    2017-08-01 | PDF
    The use of safety belts and child safety seats is a proven means of reducing injuries to motor vehicle occupants involved in traffic crashes. There have been various methods used in efforts to increase safety belt and safety seat usage. Past efforts have included public information campaigns, local and statewide legislation, and enforcement of the ...
  • Urban Travel Time Variability in New York City A SpatioTemporal Analysis within Congestion Pricing Context
    Urban Travel Time Variability in New York City : A Spatio-Temporal Analysis within Congestion Pricing Context
    Yazici, Anil ;
    Ozguven, Eren Erman
    2017-08-01 | PDF
    Traffic congestion is an important aspect of quality of life, mobility and accessibility in urban areas. The economic cost of congestion is in the order of billions of dollars especially for dense urban cities. Besides the congestion which relates to the magnitude of travel time, travel time variability is also studied extensively by researchers as ...
  • A10 UAS Control Station Ergonomics Considerations Tasks CS6 through CS8
    A10 – UAS Control Station Ergo-nomics Considerations : Tasks CS-6 through CS-8
    Babski-Reeves, K. ;
    Burch, R.
    2017-08-01 | PDF
    The overall objective of the control station tasks within Project A-10 is to provide the Federal Aviation Administration (FAA) with information on an ergonomic design of unmanned aircraft system (UAS) control stations which will allow safe piloting of UASs. A large percentage, 69%, of unmanned aircraft accidents have been attributed to human factor ...
  • Class III short line system inventory to determine 286000 lb 129844 kg railcar operational status in Kansas final report
    Class III / short line system inventory to determine 286,000 lb (129,844 kg) railcar operational status in Kansas : final report.
    Fitzsimmons, Eric J. ;
    Tucker-Kulesza, Stacey
    2017-08-01 | PDF
    The rail industry’s recent shift towards larger and heavier railcars has influenced Class III/short line railroad operation and track maintenance costs. Class III railroads earn less than $38.1 million in annual revenue and generally operate first and last leg shipping for their customers. In Kansas, Class III railroads operate approximately 40 per ...
  • Performance Evaluation of Arizonas LTPP SPS3 Project Strategic Study of Maintenance Procedure Effectiveness for Flexible Pavements
    Performance Evaluation of Arizona’s LTPP SPS-3 Project : Strategic Study of Maintenance Procedure Effectiveness for Flexible Pavements
    Dufalla, Nicole ;
    Karamihas, Steven M.
    2017-08-01 | PDF
    As part of the Long Term Pavement Performance (LTPP) Program, the Arizona Department of Transportation(ADOT) constructed 36 Specific Pavement Study-3 (SPS-3) test sections across four test sites in Arizona. The purpose of the SPS-3 experiment was to study various maintenance strategies for asphalt concrete (AC)pavements. Using surface distress and ...
  • Stage 2 tool users manual
    Stage 2 tool user’s manual.
    Walton, C. Michael
    2017-08-01 | PDF
    The purpose of the Permitted Overweight Truck Corridor Analysis Tool (referred to in this document as the Stage 2 Tool) is to evaluate existing or to create new proposed overweight (OW) truck corridors to estimate the permitted OW truck, pavement, bridge consumption, and safety project costs of OW truck operations. These designated or proposed corr ...
  • Adapting construction staking to modern technology final report
    Adapting construction staking to modern technology : final report.
    El-Gohary, Nora ;
    El-Rayes, Khaled
    2017-08-01 | PDF
    This report summarizes the tasks and findings of the ICT Project R27-163, Adapting Construction Staking to Modern Technology, which aims to develop written procedures for the use of modern technologies (such as GPS and civil information modeling) in construction staking of highway projects, for inclusion in the Illinois Department of Transportation ...
  • Best Practices for Managing Work Zone Data
    Best Practices for Managing Work Zone Data
    Cheng, Yang ;
    Parker, Steven
    2017-08-01 | PDF
    This work investigated methods and best practices that agencies use to manage work-zone data. Information gathered from the survey includes types of data collected, methods used for data collection, data architecture, methods used for geo-referencing data, how work-zone data is currently being used, and additional data needs. The results of the sur ...
  • Analysis modeling and simulation AMS testbed development and evaluation to support dynamic mobility applications DMA and active transportation and demand management ATDM programs evaluation summary for the San Diego testbed
    Analysis, modeling, and simulation (AMS) testbed development and evaluation to support dynamic mobility applications (DMA) and active transportation and demand management (ATDM) programs - evaluation summary for the San Diego testbed
    Yelchuru, Balaji ;
    Kamalanathsharma, Raj
    2017-08-01 | PDF
    The primary objective of this project is to develop multiple simulation testbeds and transportation models to evaluate the impacts of Connected Vehicle Dynamic Mobility Applications (DMA) and Active Transportation and Demand Management (ATDM) strategies. This report summarizes the evaluations conducted on the San Diego Testbed.
  • Performance of foamed warm mix asphalt in Virginia over four to six years
    Performance of foamed warm mix asphalt in Virginia over four to six years.
    Diefenderfer, Stacey D.
    2017-08-01 | PDF
    The Virginia Department of Transportation (VDOT) began allowing the use of warm mix asphalt (WMA) in 2008 and has become a national leader in the use of WMA technologies. Several WMA technologies were investigated in research projects prior to implementation; however, foamed WMA was not. This study was designed to evaluate the properties and perfor ...
  • Cracked Pavement Investigation
    Cracked Pavement Investigation
    Rauser, Jesse G. ;
    Rupnow, Tyson D.
    2017-08-01 | PDF
    As part of the pavement and roadway structure investigation, LTRC Concrete Research Laboratory personnel obtained a total of seven cores in the presence of District 04 personnel in February 2017. The cores extracted showed that the longitudinal joint performed as designed, with the formation of fulldepth cracks below the saw cut. An examination of ...
  • Secure and Private Sensing for Driver Authentication and Transportation Safety Final Report
    Secure and Private Sensing for Driver Authentication and Transportation Safety : Final Report
    Voris, Jonathan ;
    Artan, N. Sertac
    2017-08-01 | PDF
    Recent technology trends have allowed affordable and efficient collection of driver data. This has enabled a variety of potential applications, including more accurate pricing determinations for insurance and finer grained traffic planning for improved public safety. Although this technological growth provides for a wealth of new opportunities, giv ...
  • Developing a Uniform Process for Quantifying Research Benefits Summary
    Developing a Uniform Process for Quantifying Research Benefits [Summary]
    Munir, Hafiz ;
    Fick, Deb
    2017-08-01 | PDF
    This Technical Summary pertains to Report 2017-13, “Development of a Process for Quantifying the Benefits of Research,” published July 2017.
  • RainfallRunoff Modeling for Improved Peak Flow Estimates in the Black Hills Area of South Dakota
    Rainfall-Runoff Modeling for Improved Peak Flow Estimates in the Black Hills Area of South Dakota
    Hoogestraat, Galen
    2017-08-01 | PDF
    Peak-flow frequency estimates in the Black Hills area of South Dakota are complicated by the occurrence of extreme flood events that do not fit typical statistical distributions. Alternative methods such as a mixed population analysis have been used to help incorporate high-outlier peak-flow events in frequency analyses; however, more information m ...
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