An evaluation of the 'sideway force method' for the prediction of the frictional characteristics of pavement surfaces was undertaken. As part of the program, an evaluation of the adaptability of the Mu-Meter as a standard highway friction measuring trailer was conducted. In the evaluation such items as repeatability, speed, temperature, and tire pressures versus friction and the ability to correlate with other friction measuring devices were of prime interest. A friction inventory was conducted of the Arizona Highway system through which a series of correlations dealing with seasonal variations, rainfall amounts, remedial measures and accident analyses were made. A condition called differential wheelpath friction was studied and it was found that a difference as low as ten wet stopping distance numbers at 40 MPH between wheelpaths can cause a braking car to spin out of control. The study indicated that emulsified petroleum resin can be safely applied, provided the pavement surface is then sanded and broomed and initially had an acceptable friction level.


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    Title :

    Surface Friction Study of Arizona Highways


    Contributors:
    J. C. Burns (author) / R. J. Peters (author)

    Publication date :

    1972


    Size :

    78 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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