本文通过对国内外避险车道横断面及避险车道与主线夹角的研究成果、使用现状、事故案例调研、分析,并结合车辆尺寸参数、汽车行驶特性、施救措施、道路线形等方面的相关理论依据,提出合理的引道长度、引道宽度、制动坡道宽度、服务车道宽度的设计指标。并结合汽车行驶特性、驾驶员交通特性等相关理论依据,提出合理的制动坡道与主线夹角的取值范围。 Based on the research results of the cross-section of hedging lanes and the angle between hedging lanes and the main line at home and abroad, the status quo, accident case investigation and analysis, combined with the vehicle size parameters, vehicle driving characteristics, rescue measures, road alignment and other aspects Relevant theoretical basis, put forward reasonable lead length, approach width, braking ramp width, service lane width design index. Combining the driving characteristics of the car with the traffic characteristics of the driver and other related theoretical bases, a reasonable range of the included angle between the braking ramp and the main line is proposed.