Vehicles operating on wet pavements suffer impairment of their steering and braking capabilities. Tests have shown that this condition worsens as the vehicle speed increases and at a critical ground speed the vehicular wheel is separated from the pavement by a layer of fluid and is said to be hydroplaning. This report uses wheel spin-down as a criterion for evaluating the wet weather properties of a Portland cement concrete pavement and a gravel seat coat pavement and considers the effects of water depth, tire inflation pressure, tire tread depth, and wheel load. Results are given.
Samenvatting