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Filtering by: Creator Johnson, K. S. Remove constraint Creator: Johnson, K. S. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering License All rights reserved Remove constraint License: All rights reserved

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  • 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:
    S. Brown for the degree of Master of Science in Civil Engineering presented on September 6, 2012

  • Assessing the Impact of Three Intersection Treatments on Bicyclist Safety

    Creator:
    Scott-Deeter, Logan K..
    Abstract:
    Bicyclist safety at urban intersections is a critical element for encouraging an increase in bicycle commuting. With bicycle injury and fatality rates rising due to collisions with vehicles at signalized intersections, increasing the safety of riders continues to be an important consideration when promoting this mode of transportation. Previous research...
    Resource Type:
    Masters Thesis
    Full Text:
    Safety Abstract approved: ______________________________________________________ David S

  • 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:
    .7 : D ev el o p in g S p ee d P ro fi le s- C h ec k in g G ra p h f o r N ex

  • Design and fatigue behavior of near-surface mounted CFRP bars for shear strengthening of RC bridge girders

    Creator:
    Johnson, Brandon Ang
    Abstract:
    Carbon fiber reinforced polymer (CFRP) materials are emerging as an effective means of strengthening and rehabilitating bridges. Near surface mounting (NSM) is a newer technique for application of CFRP for retrofitting of bridge members that provides advantages over conventional strengthening techniques. The technique is still new and uncertainties remain regarding...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Brandon Ang Johnson

  • 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

  • Impact of access density on number of crashes at commercial roadways

    Creator:
    Yi, Xiang
    Abstract:
    Numerous research efforts have proven the safety benefits of access management. There are several access management techniques, including unsignalized access spacing, signalized intersection spacing, left-turn lanes, right-turn lanes, Two-Way Left-Turn lanes (TWLTLs), nontraversable median, U-turns, interchange access separation distances and so on. This project explores the correlation between access density...
    Resource Type:
    Masters Thesis
    Full Text:
    Roadways Abstract approved: Karen K. Dixon

  • Fuzzy logic for improved dilemma zone identification : a simulator study

    Creator:
    Moore, Derek
    Abstract:
    The Type-II dilemma zone refers to the segment of roadway approaching an intersection where drivers have difficulty deciding to stop or proceed through at the onset of the circular yellow (CY) indication. Signalized intersection safety can be improved when the dilemma zone is correctly identified and steps are taken to...
    Resource Type:
    Masters Thesis
    Full Text:
    Study. Abstract approved: ______________________________________________________ David S

  • Influence of diagonal cracks on negative moment flexural anchorage performance in reinforced concrete bridge girders

    Creator:
    Goodall, Joshua K.
    Abstract:
    Large numbers of vintage reinforced concrete deck-girder bridges remain in the national bridge inventory. Many of these exhibit diagonal cracking and other distress. Due to the design practices of the time, it is common to observe cracks at locations where flexural reinforcing steel is terminated along the span. The presence...
    Resource Type:
    Masters Thesis
    Full Text:
    Sopal, Brandon Johnson, Jake Goebel, Thomas Schumacher, A. Ekin Senturk, and O. Tugrul Turan for their

  • Influence of Uncertainties in Terrestrial Laser Scanning on Structural Reliability and Bridge Load Rating

    Creator:
    Loving, Carly K.
    Abstract:
    To ensure the safety of the nation’s bridges, the National Bridge Inspection Standards (NBIS) require all bridges to undergo routine load rating analyses to assess their structural capacity. Accurate geometric information for each structure is necessary for load rating analyses. This information is typically ascertained from as-built plans. Still, when...
    Resource Type:
    Masters Thesis
    Full Text:
    SUBSEQUENT SENSITIVITY ANALYSIS Carly K. Loving, Andre R. Barbosa, Michael J. Olsen