Additional Information / Summary:

This 1974 study looked at the wet weather characteristics of five different pavements and ten different tires. Wheel spin-down was used as the criterion for the detection of hydroplaning and the variables considered were tire tread depth, tire inflation pressure, water depth, and wheel load. No single critical speed necessary for wheel spin-down was found for the range of variables selected, but it was recommended that there be a reduction of speed to 50 mph for any section of highway on which water can accumulate to 0.1 inch or more during wet weather periods. Book, highway traffic safety engineering expert Book , books,pavement edge drop expert, pavement edge drop off expert, work zone safety expert, construction zone safety expert, roadway hydroplaning expert, traffic engineering expert, traffic sign expert, traffic signal expert, pavement marking expert, highway safety expert