As TxDOT plans for future expansion of the states highway network, interest in higher design speeds has been expressed as a means of promoting faster and more efficient travel and movement of goods within the state. TxDOT funded project 0-6071 as part of a proactive consideration of safety on these highspeed facilities. This project began the process of developing roadside safety hardware suitable for use on high-speed highways. The impact conditions selected for the design, testing, and evaluation of this highspeed hardware include a speed of 85 mi/h and an angle of 25 degrees for barrier impacts. The design vehicles are those specified by the pending AASHTO Manual for Assessing Safety Hardware (MASH) and include a 5000-lb, 1/2-ton, 4-door pickup truck and a 2425-lb passenger car. After consideration of several barrier systems, two designs were selected for further evaluation through full-scale crash testing. These included an energy absorbing bridge rail concept and a modified wood post thrie beam guardrail. The results of the full-scale crash testing are presented and recommendations for future research are discussed.


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    Title :

    Evaluation of Barriers for Very High Speed Roadways


    Contributors:
    R. P. Bligh (author) / N. M. Sheikh (author) / A. Y. Abu-Odeh (author) / W. L. Menges (author)

    Publication date :

    2010


    Size :

    152 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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