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1.极限最小半径的确定将最小平曲线半径改为极限最小半径,其中,四级公路平原、微丘区和二级公路山岭、重丘区极限最小半径由50米改为60米;三级公路山岭、重丘区极限最小半径由25米改为30米。这主要是考虑横向滑溜摩阻系数值50米时为0.19,25米时为0.22,增大半径后,分别为0.15和0.18,这对行车安全和旅客的舒适都较有利。在曲线上行驶时,当横向加速度超过一定数值时,驾驶员一般要着手增加汽车稳定性的操作。但是,如何确定这个界限,美国
1. Determination of the minimum radius of the minimum radius of the curve to the minimum radius of the limit, of which four highway plain, micro-mounds and secondary road mountains, heavy hilly area minimum radius from 50 meters to 60 meters; three Highway mountain, heavy hill area minimum radius from 25 meters to 30 meters. This is mainly due to the fact that the coefficient of lateral slip resistance is 0.19 at 50 meters and 0.22 at 25 meters. After increasing the radius, they are 0.15 and 0.18, respectively, which is more favorable for driving safety and passenger comfort. When driving on a curve, when the lateral acceleration exceeds a certain value, the driver generally starts to increase the stability of the vehicle. However, how to determine this limit, the United States