http://worldcat.org/entity/work/id/472896368

Predictor model for seasonal variations in skid resistance

Two models, utilizing data collected in 1979 and 1980, were developed to predict variations in skid resistance due to rainfall conditions, temperature effects, and time of the year. A generalized predictor model was developed from purely statistical considerations and a mechanistic model was developed from hypothesized mechanisms. This model may be utilized to estimate the skid resistance at any time in the season from a measurement made during the same season, or to adjust skid-resistance measurement made at any time during the season to the end-of-season level. For the purpose of these estimates it is necessary only to know the length of time since the last rainfall, the 30-day temperature history from a nearby weather recording station, the average daily traffic, and a skid-resistance measurement and the date on which it was made. The mechanistic model requires, in addition to the above inputs, two pavement properties describing the polishing characteristics of the aggregate and an estimate of the percent normalized gradient of the skid resistance. The application of these models is summarized in Vol. I. Their development is given in Vol. II.

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