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Filtering by: Creator Erickstad, Karen M. Remove constraint Creator: Erickstad, Karen M. Advisor Dixon, Karen K. Remove constraint Advisor: Dixon, Karen K.

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  • Effectiveness of curve advisory speed signs : a characterization of road operations in western Oregon

    Creator:
    Avelar Morán, Raúl Eduardo
    Abstract:
    Posting advisory speed signs at sharp horizontal curve locations is a common practice in the U.S. These signs recommend drivers safe speeds to negotiate such curves. Literature indicates that adherence to advisory speeds is, in general, poor. Moreover, limited research is available that quantifies safety implications of these signs. This...
    Resource Type:
    Masters Thesis
    Full Text:
    Operations in Western Oregon. Abstract approved: ___________________________ Karen K. Dixon

  • Normal acceleration characteristics of the leading vehicle in a queue at signalized intersections on arterial streets

    Creator:
    Zhu, Hong
    Abstract:
    Normal acceleration characteristics of passenger cars provide valuable information for various aspects of transportation engineering, including use in the geometric designs of intersections, freeway ramps, passing lanes, acceleration lanes, turning bays, or in the development of traffic simulation or fuel consumption models. However, the data used in previous studies are...
    Resource Type:
    Masters Thesis
    Full Text:
    : ________________________________________________________ Dr. Karen K. Dixon Normal acceleration characteristics of passenger cars provide

  • Optimal sensor placement for measuring operating speeds through curves on rural two-lane highways

    Creator:
    Mecham, Megan E.
    Abstract:
    Operating speed is one of the best performance measures that can tell transportation agencies how well or how poorly the transportation system is functioning. Fluctuating operating speeds often mean there is a design flaw or something about the physical road design that violates drivers' expectations. A primary example of this...
    Resource Type:
    Masters Thesis
    Full Text:
    Highways Abstract approved: Karen K. Dixon Operating speed is one of the best

  • Evaluating safety at Oregon‘s isolated, high-speed, signalized intersections

    Creator:
    Kopper, Neil H.
    Abstract:
    Isolated approaches at signalized intersections with posted speed limits of 45 mph or greater generally experience large numbers of rear-end and angle collisions. A combination of less attentive drivers, high operating speeds, and less than ideal intersection characteristics can result in crash frequencies well above expected rates. A number of...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________ Karen K. Dixon Isolated

  • A validation of the Oregon State University driving simulator

    Creator:
    Brown, Lacy S.
    Abstract:
    Driving simulation is widely accepted as a safe, effective, and economical alternative for investigating driver behavior in a variety of contexts. However, in order to apply simulator-based research results to real-world settings, the performance measures acquired through simulated driving experiments must first be validated. This research was aimed at validating...
    Resource Type:
    Masters Thesis
    Full Text:
    : ________________________________________________________ Karen K. Dixon Driving simulation is widely accepted as a safe, effective, and economical

  • Using the predictive method in the 2010 Highway Safety Manual to identify hazardous intersections in Corvallis, OR

    Creator:
    Zhou, Yanfen
    Abstract:
    An intersection, due to its vehicle and pedestrian conflict movements, experiences complex traffic situations that might contribute to crashes. In the city of Corvallis, OR, historically more than 80% of the total crashes have occurred within an intersection or have been designated as intersection-related. It is important to develop a...
    Resource Type:
    Masters Thesis
    Full Text:
    Intersections in Corvallis, OR Abstract approved: _____________________________________________ Karen K

  • Developing safety performance functions for 4-leg single-lane roundabouts based on Oregon data : a case study

    Creator:
    Zheng, Jianfei
    Abstract:
    Roundabouts have become an alternative for traditional intersections due to the safer operational performance. Previous research has provided crash modification factors (CMFs) as a criterion based on before-after studies as to evaluate the safety performance of roundabouts. One drawback of assessment based on crash modification factors, however, is that a...
    Resource Type:
    Masters Thesis
    Full Text:
    Study Abstract approved: ___________________________________________________ Karen K. Dixon

  • Calibrating the highway safety manual predictive methods for Oregon rural state highways

    Creator:
    Xie, Fei
    Abstract:
    The first edition of the Highway Safety Manual (HSM) provides a quantitative approach to predict the safety of transportation facilities based on the recently developed scientific methods. This approach, known as the predictive method, was developed for several states in the United States. Due to differences in driver population, weather...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Karen K. Dixon The first edition of the Highway Safety Manual (HSM) provides a quantitative

  • Data assessment in Oregon for SafetyAnalyst based on Highway Safety Manual Part B

    Creator:
    Li, Meng
    Abstract:
    The author of the Highway Safety Manual (HSM) Part B developed a predictive method for safety management. A software tool for highway safety system analysis called the SafetyAnalyst is developed basing on HSM Part B. The author describes an effort to evaluate the feasibility of SafetyAnalyst in Oregon. Seven sample...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Karen K. Dixon The author of the Highway Safety Manual (HSM) Part B developed a predictive

  • Safety performance of curve advisory speed signs

    Creator:
    Avelar Moran, Raúl Eduardo
    Abstract:
    Posting advisory speed signs at sharp horizontal curve sites is a practice well established in the United States. The purpose of these signs is to provide the driving public with a safe speed to negotiate such curves; however, the link between these signs and safety has not yet been clearly...
    Resource Type:
    Dissertation
    Full Text:
    approved: ___________________________ Karen K. Dixon Posting advisory speed signs at sharp