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  • Improving Safety of the Platform-Train-Interface Through Operational and Technical Mitigation Strategies

    Creator:
    Anderson, Dylan
    Abstract:
    The purpose of this study is to provide background information and examples of best practices relating to platform-train-interface (PTI) safety. The research and information obtained for this manuscript has been in association with the A-40 project funded by the Transit Cooperative Research Program (TCRP) of the National Academies. The purpose...
    Resource Type:
    Masters Thesis
    Full Text:
    ...................................................................................................................................... 29 Railroad Track, Station, and Car Maintenance

  • Evaluation of alternative information signs in Oregon

    Creator:
    Neill, Justin Michael
    Abstract:
    The number of international inbound tourists to the United States has risen steadily. To serve these and other tourists best, traffic signs need to communicate information correctly across a potential language barrier. Of particular interest is the traffic sign intended to communicate directions to Tourist Information centers. While the general...
    Resource Type:
    Masters Thesis
    Full Text:
    ” Sign without a circular border and 75.4% for the “i” Sign with a circular border. A statistical

  • The Evaluation of Engineering Treatments for Right-Hook Crashes at Signalized Intersections with Bicycle Traffic

    Creator:
    Warner, Jennifer Lynn
    Abstract:
    A right-hook crash is a bicycle-motor vehicle crash between a right-turning motor vehicle and an adjacent through-moving bicycle. This study focuses on right-hook crashes that occur during the latter stage of the circular green indication at signalized intersections with shared right-turn and through lanes. The overall objective was to evaluate...
    Resource Type:
    Masters Thesis
    Full Text:
    that occur during the latter stage of the circular green indication at signalized intersections with

  • Numerical response of concrete-lined tunnels crossing active faults

    Creator:
    Lange, Stephanie
    Abstract:
    A challenge for municipal authorities of growing urban areas is to provide larger and faster transportation and utility networks that are safe and resilient to significant disruptions after an earthquake event and other disasters. Urban regions, like the San Francisco Bay or the Los Angeles area, are situated in seismically...
    Resource Type:
    Dissertation
    Full Text:
    maintenance measures and support tunnel safety. A 2D model of a circular reinforced concrete tunnel crossing

  • Improving Fatigue Cracking and Moisture Resistance of Asphalt Mixtures

    Creator:
    Obaid, Ihsan A.
    Abstract:
    The resistance of asphalt concrete pavement to distresses such as fatigue cracking and permanent deformation is governed by how well the structure can resist loading under a variety of traffic and climate-related conditions. Asphalt binder type and content are typically the variables that pavement engineers can manipulate to render the...
    Resource Type:
    Dissertation
    Full Text:
    incorporating performance tests for rutting Hamburg Wheel-Tracking Test (HWTT) and cracking Semi-Circular

  • Evaluation of Driver Behavior during Right Turn Maneuvers at Signalized Intersections: Mitigation of Driver-Pedestrian Conflicts with a Right Turn Flashing Yellow Arrow

    Creator:
    Jashami, Hisham
    Abstract:
    Accommodating motor vehicles that are turning (left or right) at signalized intersections requires a careful understanding of the safety and efficiency of design and operational variables. Turning vehicles are the primary collision risk for non-motorized road users at signalized intersections. When turning movements need to be controlled, proper driver response...
    Resource Type:
    Dissertation
    Full Text:
    drivers were presented with a steady red arrow display as compared to a steady circular red display

  • Accuracy Evaluation of Real-Time GNSS Survey Observations

    Creator:
    Allahyari, Mahsa
    Abstract:
    Real time networks (RTNs) have become popular for Global Navigation Satellite System (GNSS) surveys because highly accurate positions can be derived in seconds to minutes compared to hours as required with static sessions. To evaluate the accuracy of these shorter-duration, RTN GNSS observations and their potential for use as a...
    Resource Type:
    Masters Thesis
    Full Text:
    ) positioning using a single base station versus a network of base stations, and assesses the effect of

  • Blending of Virgin and RAP Binder for Asphalt Mixes with High RAP Contents: A Pilot Study

    Creator:
    Lewis, Sunny, Coleri, Erdem, Sukhija, Mayank, and Sreedhar, Shashwath
    Abstract:
    Reusing reclaimed asphalt pavement (RAP) presents an opportunity to reduce environmental burdens and encourage sustainable development. However, a concern exists about blending RAP binder and virgin asphalt binder. While RAP mixtures assume complete blending between these binders, the actual extent of this blending remains uncertain. Lower blending percentages can reduce...
    Resource Type:
    Article
    Full Text:
    asphalt mixtures and binders was evaluated 20 through semi-circular bend (SCB) and rheological tests

  • Safety and efficiency benefits of traffic signal countdown timers : a driving simulator study

    Creator:
    Islam, Mohammad Rabiul
    Abstract:
    Traffic signal countdown timers (TSCT) are innovative, practical and cost effective technologies with the potential to improve efficiency and safety at signalized intersections. The purpose of these devices is to assist motorists in decision making at signalized intersections with real time signal change information. While successful implementation of these devices...
    Resource Type:
    Dissertation
    Full Text:
    the onset of the circular yellow indication in dilemma zones increases by approximately 13%. These

  • Evaluation of Cycling Behavior: Factors that Influence Bicyclists’ Comprehension, Comfort, and Stress

    Creator:
    Cobb, Douglas P.
    Abstract:
    Travel demand has increased due to population growth, increase of vehicle ownership, and development patterns resulting in greater levels of congestion, pollution, and crash frequency. One approach to demand management is to increase the share of trips made by bicycles. With the increase in bicycling rates, there is a critical...
    Resource Type:
    Dissertation
    Full Text:
    preferred the numerical BSCT, in comparison to the circular and vertical disappearing dot options. The