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本文从车行道旋转角速度、行车速度、超高渐变率、路面宽、路面排水等几个因素进行分析，提出了控制直线缓和段和超高缓和段的方法。
This paper analyzes the factors such as the rotation angle of roadway, driving speed, ultra-high gradation rate, wide road surface and drainage of pavement, and puts forward the method of controlling straight-line moderate section and super-high section.