Relationships were developed between wet-pavement accident rate and skid number for various combinations of highway type, area type (urban/rural) and traffic volume. Accident rate, skid number and related data were collected for two one-year periods on 428 highway sections located in 16 states. An extensive statistical analysis of the data was conducted using matched-pair comparisons, regression analysis and analysis of covariance. The analysis found a small, but statistically significant, influence of skid number on wet-pavement accident rate. A linear relationship with skid number explained the variation in wet-pavement accident rate as well, or better, than any simple logarithmic or polynomial function.


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    Title :

    Effectiveness of Alternative Skid Reduction Measures. Volume I. Evaluation of Accident Rate-Skid Number Relationships


    Contributors:

    Publication date :

    1978


    Size :

    254 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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