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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 7641 - 7660 of 36114 results
  • Using RealTime Data from Road Weather Information Systems RWISs to Affect Driver Behavior During Inclement Weather Part I
    Using Real-Time Data from Road Weather Information Systems (RWISs) to Affect Driver Behavior During Inclement Weather – Part I
    Fay, Laura ;
    Villwock-Witte, Natalie
    2017-09-08 | PDF
    During inclement weather, there are numerous vehicle crashes that occur on Interstate 40 (I-40) in New Mexico near the Continental Divide at “Top of the World” (mm 50). A major contributing factor in the vicinity of the “Top of the World” as identified by the New Mexico Department of Transportation (NMDOT) based on crash report information is the f ...
  • Application of a Project Prioritization Framework to the 2016 SHOPP
    Application of a Project Prioritization Framework to the 2016 SHOPP
    Turner, Loren L.
    2017-09-06 | PDF
    This report documents the analysis and prioritization of a portfolio of 384 newly proposed projects for the 2016 State Highway Operation and Protection Program (SHOPP), having a multi-year funding of approximately $4.6 billion. The project prioritization approach used in this analysis builds upon a methodology developed for the 2014 SHOPP, document ...
  • Statewide Geotechnical Asset Management Program Development Final Report for Rock Slopes Unstable Soil Slopes and Embankments Retaining Walls and Material Sites
    Statewide Geotechnical Asset Management Program Development : Final Report for Rock Slopes, Unstable Soil Slopes and Embankments, Retaining Walls, and Material Sites
    Beckstrand, Darren L. ;
    Benko, Barry A.
    2017-09-05 | PDF
    The Alaska Department of Transportation and Public Facilities (AKDOT&PF) has developed the nation’s first Geotechnical Asset Management Program. The program encompasses rock slopes, unstable slopes and embankments, retaining walls, and material sources along the State’s highway system. Like bridges and pavements, geotechnical assets are subject to ...
  • Effective and Efficient Roadside Ditch Cleaning Using BMPs for Erosion and Sediment Control
    Effective and Efficient Roadside Ditch Cleaning Using BMP's for Erosion and Sediment Control
    Elzarka, Hazem ;
    Gao, Ce
    2017-09-01 | PDF
    The goal of this research is to improve ODOT's current process of maintaining ditches. The research team evaluated current procedures that ODOT utilize for roadside ditch cleaning and conducted field tests to evaluate alternates to current procedures. Field tests of the Ditchmaster (DM) 800, a ditcher that uses a horizontal rotating auger to remove ...
  • Improving safety in pavement field testing project summary
    Improving safety in pavement field testing [project summary].
    Lu, Qing ;
    Gunaratne, Manjriker
    2017-09-01 | PDF
    As part of its pavement evaluation program, the Florida Department of Transportation drives over 500,000 miles annually in its mission to collect pavement condition and performance data. Some of this work is conducted by vehicles that often travel at prevailing speeds, requiring the pavement testing operators (PTOs) to drive the vehicle, operate th ...
  • Bridge Maintenance Program for the City of Columbia Missouri Final Report
    Bridge Maintenance Program for the City of Columbia, Missouri: Final Report
    Washer, Glenn ;
    Brown, Henry
    2017-09-01 | PDF
    In this project, a bridge maintenance and preservation program was developed for the City of Columbia, Missouri. The program focuses on practical and implementable technologies and procedures that can be applied to extend the service lives of the bridges, reduce maintenance costs, and ensure safety and serviceability. Specific technologies that wer ...
  • MultiModal Intersections Resolving Conflicts between Trains Motor Vehicles Bicyclists and Pedestrians
    Multi-Modal Intersections: Resolving Conflicts between Trains, Motor Vehicles, Bicyclists and Pedestrians
    Goodchild, Anne V. ;
    McCormack, Edward
    2017-09-01 | PDF
    This research report investigates the relationship between pedestrians and bicyclists on paths parallel to railroad tracks and with a road perpendicular to the path. The possible conflicts at intersections within these design parameters are of concern to ODOT, and therefore, has been recognized as an opportunity to conduct research that improves th ...
  • Examination of the current practice of lighting in Virginia nighttime work zones and improving safety through the development of nighttime lighting specifications final report
    Examination of the current practice of lighting in Virginia : nighttime work zones and improving safety through the development of nighttime lighting specifications : final report.
    Bhagavathula, Rajaram ;
    Gibbons, Ronald B.
    2017-09-01 | PDF
    This project evaluated current nighttime work zone lighting practices for limited-access highways and primary routes inVirginia through (1) an on-site evaluation of lighting levels in work zones; (2) an illuminance characterization of variouscommercially available light towers; and (3) a human factors evaluation of those light towers and developed ...
  • Performance measurement evaluation framework and cobenefit tradeoff analysis for connected and automated vehicles CAV applications a survey a research report from the National Center for Sustainable Transportation
    Performance measurement evaluation framework and co-benefit / tradeoff analysis for connected and automated vehicles (CAV) applications : a survey : a research report from the National Center for Sustainable Transportation.
    Tian, Danyang ;
    Wu, Guoyuan
    2017-09-01 | PDF
    A number of Connected and/or Automated Vehicle(CAV) applications have recently been designed to improve theperformance of our transportation system. Safety, mobility andenvironmental sustainability are three cornerstone performancemetrics when evaluating the benefits of CAV applications. Thesemetrics can be quantified by various measures of effecti ...
  • The Reliability and Effectiveness of a RadarBased Animal Detection System
    The Reliability and Effectiveness of a Radar-Based Animal Detection System
    Huijser, Marcel P. ;
    Fairbank, Elizabeth R.
    2017-09-01 | PDF
    This document contains data on the reliability and effectiveness of an animal detection system along U.S. Hwy 95 near Bonners Ferry, Idaho. The system uses a Doppler radar to detect large mammals (e.g., deer and elk) when they approach the highway. The system met most of the suggested minimum norms for reliability. The total time the warning signs ...
  • Enhancing GDOTs Computerized Pavement Condition Evaluation System for Pavement Condition Survey
    Enhancing GDOT's Computerized Pavement Condition Evaluation System for Pavement Condition Survey
    Tsai, Yichang (James) ;
    Wang, Zhaohua
    2017-09-01 | PDF
    The Computerized Pavement Condition Evaluation System (COPACES) is a software tool that has been used by the Georgia Department of Transportation (GDOT) for its statewide pavement condition survey since the late 1990s. The previous version was released in 2008, which ran on Windows XP laptops. To improve the productivity, this project developed a n ...
  • Evaluation of Roadway Subsurface Drainage on Rural Routes
    Evaluation of Roadway Subsurface Drainage on Rural Routes
    Green, Roger ;
    Sargand, Shad M.
    2017-09-01 | PDF
    Excess moisture has been identified as a cause for stripping, raveling, debonding, and rutting in flexible pavement [ODOT, 2016a]. The Ohio Department of Transportation (ODOT) has been getting substantially less than the expected 15 year service life after a resurfacing project, particularly on those routes without drainage. Providing drainage may ...
  • Use of Polymer Overlays or Sealers on New Bridges Tech Transfer Summary
    Use of Polymer Overlays or Sealers on New Bridges [Tech Transfer Summary]
    ElBatanouny, Mohamed K. ;
    Nadelman, Elizabeth I
    2017-09-01 | PDF
    The main objective of this study was to develop guidelines for Iowa DOT that can aid in identifying optimum timing for application of polymer concrete overlays or sealers on new bridge decks and its effect on expected service life. The criteria for selecting polymer overlays, sealers, or using both was defined. The research also provides a framewor ...
  • Transitoriented development commercial gentrification exploring the linkages
    Transit-oriented development & commercial gentrification : exploring the linkages.
    Chapple, Karen ;
    Loukaitou-Sideris, Anastasia
    2017-09-01 | PDF
    As central cities in California continue their renaissance, commercial gentrification isoften identified by residents as a concern. For many, commercial gentrification means theintrusion of new businesses that force out a favorite food shop or a longstanding retail storebecause of higher rents. For others, it means an influx of hip cafés, trendy re ...
  • Safe main street highways part II analyses of collisions involving pedestrians and bicyclists in Washington State
    Safe main street highways part II : analyses of collisions involving pedestrians and bicyclists in Washington State.
    Moudon, Anne Vernez ;
    Kang, Mingyu
    2017-09-01 | PDF
    This project contributes to the Washington State Strategic Highway Safety Plan, whose goals areto achieve zero road fatality and serious injury by 2030 and to reduce the number of pedestrians andbicyclists involved in motor-vehicle collisions on state highways. The study focused on “main streethighways” (MSHs), which are stretches of State Routes t ...
  • INVESTIGATION OF RECYCLED TIRE CHIPS FOR USE INGDOT CONCRETE USED TO CONSTRUCTBARRIERWALLSAND OTHER APPLIATIONSPHASE I
    INVESTIGATION OF RECYCLED TIRE CHIPS FOR USE IN GDOT CONCRETE USED TO CONSTRUCT BARRIER WALLS AND OTHER APPLIATIONS–PHASE I
    Durham, Stephan A. ;
    Geum Chorzepa, Mi
    2017-09-01 | PDF
    In 2013, GDOT constructed more than 42,000 LF of concrete barrier utilizing a Class A concrete mixture design (3000 psi). There may be potential for the beneficial utilization of recycled tire chips in concrete barrier applications which can possibly lead to improved safety for vehicle occupants as well as reduce disposed rubber from going tolandfi ...
  • A Driving Simulator Evaluation of CrossSectional Design Elements and the Resulting Driving Behaviors
    A Driving Simulator Evaluation of Cross-Sectional Design Elements and the Resulting Driving Behaviors
    Gongalla, Bhavana ;
    Fitzpatrick, Cole D.
    2017-09-01 | PDF
    This research explores the relationship between the cross-sectional design elements and the impact on selected driver attributes such as speed profiles and lateral positioning. In this experiment a traditional collector-type base roadway of 1.5 miles with a 14 ft travel lane and an 8 ft shoulder was modeled using an advanced driving simulator. The ...
  • Examination of the current practice of lighting in Virginia nighttime work zones and improving safety through the development of nighttime lighting specifications summary report
    Examination of the current practice of lighting in Virginia : nighttime work zones and improving safety through the development of nighttime lighting specifications : summary report.
    Bhagavathula, Rajaram ;
    Gibbons, Ronald B.
    2017-09-01 | PDF
    This project evaluated current nighttime work zone lighting practices for limited-access highways and primary routes inVirginia through (1) an on-site evaluation of lighting levels in work zones; (2) an illuminance characterization of variouscommercially available light towers; and (3) a human factors evaluation of those light towers and developed ...
  • Successes in Stewardship INVEST Leads to Sustainability Success and Innovation at Arizona Department of Transportation ADOT
    Successes in Stewardship - INVEST Leads to Sustainability Success and Innovation at Arizona Department of Transportation (ADOT)
    United States. Federal Highway Administration
    2017-09-01 | PDF
    Successes in Stewardship is a Federal Highway Administration (FHWA) bimonthly newsletter highlighting current best practices in stewardship and environmental review from around the country.
  • Dynamic assessment of bridge deck performance considering realistic bridgetraffic interaction research brief
    Dynamic assessment of bridge deck performance considering realistic bridge-traffic interaction : research brief
    Chen, Suren ;
    Zhou, Yufen
    2017-09-01 | PDF
    This study is to develop simulation methodology to conduct the dynamic assessment of bridge deck performance subjected to traffic. Concrete bridge decks are exposed to daily traffic loads and may experience some surface cracking caused by excessive stress or fatigue accumulation. Bridge decks experiencing such cracking will require repair or replac ...
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