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利用同一车型,在同一种标准柏油公路上进行不同车速和不同降水条件制动效果的测试,并建立了路面湿滑气象等级。结果表明:通过车辆实际制动效果测试,证明不同相态降水路面的湿滑性与对应路面的摩擦系数规律相符。针对各种降水条件下的路面,根据车辆在不同降水路面上的制动距离差别,划分了冰路面、冰雪路面(冰雪混合或雪)、雨雪混合路面和雨路面4类湿滑路面。依据划分的4类湿滑路面建立了路面湿滑的气象等级:定义冰路面为一级,特严重湿滑;定义冰雪混合、雪路面为二级,严重湿滑;定义雨雪路面为三级,很湿滑;定义雨路面为四级,较湿滑。
Using the same model, on the same kind of standard asphalt road braking test results of different speeds and different precipitation conditions, and the establishment of the pavement wet skid weather grade. The results show that the test of actual braking effect of vehicles shows that the wettability of pavement is consistent with the friction coefficient of corresponding pavement. According to the differences of braking distances of vehicles on different precipitation roads, the paper classified four types of slippery pavement as ice pavement, ice and snow pavement (snow and ice mixture or snow), rain and snow pavement and rain pavement under various precipitation conditions. Based on the classified wet slippery pavement, the wet weather level of the pavement is established: the ice pavement is defined as Grade I with extremely severe wet slippery; the ice-snow mixture is defined, the snow pavement is Level 2 and severe wet slippery; , Very slippery; define the rain surface is four, more slippery.