汽车车速与交通安全汽车轮胎与路面的抓着系数随路面的状况而变化。例如，在清洁干燥路面上，抓着系数高达０．７～０．８；在冰雪覆盖的路面上，抓着系数降为０．１～０．２。试验结果表明，抓着系数随车速的增高而减小，在潮湿路面上尤为明显，车速每增加２０ｋｍ／ｈ，... Vehicle speed and traffic safety The grip coefficient of a car tire and the road varies with the condition of the road surface. For example, on clean and dry roads, the clogging coefficient is as high as 0.7 to 0.8; on snow-covered roads, the clogging coefficient is reduced to 0.1 to 0.2. The experimental results show that the clutching coefficient decreases with the increase of the vehicle speed, especially on wet roads, with an increase of 20km / h for each speed ...