Citation

Anderson DA, Meyer WE, Rosenberger JL. Transp. Res. Rec. 1986; 1084: 40-48.

Copyright

(Copyright © 1986, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The wet skid resistance of a pavement can vary significantly from one day to another and from one season to another. A general decay in skid resistance occurs from the spring to the fall with day-to-day perturbations superimposed over the general decay. The seasonal decay and the day-to-day perturbations may individually be as many as 10 to 15 skid numbers. These variations are of concern when skid resistance measurements are made for survey purposes. A general statistical model developed by others was used as a prediction equation to adjust skid measurements made on any given day to an end-of-season value. In the prediction equation, day-to-day variations are accounted for by the recent rainfall history (0 to 7 days) and the air temperature at the time of the test. The general decay in skid resistance that occurs over the season is accounted for by the Julian calendar day and the average daily traffic. Adjusted end-of-season values for the data obtained in New York, Pennsylvania, and Virginia were such that 90 persent of the adjusted end-of-season values were within approximately +3.6 to -3.6 skid numbers of the measured end-of-season value. Additional research is needed to develop a fundamental understanding of the mechanisms that cause changes in skid resistance. This is necessary so that a more rational model can be developed to account for the site specificity of the changes in skid resistance that were observed.

Language: en

Keywords

PAVEMENTS; METEOROLOGY - Weather Forecasting; RAIN AND RAINFALL - Measurements; ROADS AND STREETS - Skid Resistance