减速带(如图1所示)是交叉路口上常见的一种交通设施,通常设置在学校、医院等行人较多的公共场所的马路上。为了保障过程行人的安全,汽车驶过减速带都要减速。那么,汽车能不能在减速带前不减速而按原速前进呢?一、定性研究如图2所示是车轮与减速带接触时的模型图,根据力的作用效果,将减速带对车轮的作用力F分解。 The deceleration belt (shown in Figure 1) is a common traffic facility at an intersection, usually located in the streets of public places such as schools and hospitals where there are many pedestrians. In order to ensure the safety of pedestrians in the process, the car should pass through the deceleration zone to slow down. So, the car can not slow down in front of the deceleration zone and the speed of advance? First, the qualitative research shown in Figure 2 is the wheel and deceleration zone contact model map, according to the effect of force, the deceleration zone on the wheel Force F decomposition.