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Abstract:Models that provide estimates of wet weather speed reduction, as well as analytical and empirical methods for the prediction of hydroplaning speeds of trailers and heavy trucks, were gathered and verified in a field study. Pavement properties needed to estimate the water film thickness produced during sheet flow were obtained from the literature and field studies. The investigators have been able to formulate analytical equations for predicting the critical water film thickness with respect to hydroplaning under different road geometric conditions, such as, straight runs, super-elevations, and transition sections. A wet weather crash analysis was performed using crash statistics, geometrical data, pavement condition data, and other relevant information available in numerous Florida Department of Transportation (FDOT) databases.
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