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高速公路交通事故相对较少,但是,一旦发生交通事故,一般都是恶性交通事故,造成车辆损坏和人员伤亡的严重后果。因此,应根据高速公路具有的性能分析行车安全的规律性。 行车速度的规律 目前高速公路上行车速度相当高,特别下坡路段车速更高,小轿车可达140～180km/h,客货车可达80～120km/h。用这种车速行驶不安全,因为高速公路设计车速为100～120km/h,高速公路的平曲线半径、纵坡、视距、超高等受设计车速的限制。行车速度在设计车速范围的行车是安全的,超过设计车速时的行车不安全,有可能出现交通事故。为了发挥高速公路快速、安全的性能,在高速公路上应限制最高车速和最低车速,结合我国实际情况,高速公路最高车速限制在100～120km/h为宜,最低车速限制在40～60km/h为宜。 车头间隔规律 车辆在公路行驶需要保持一个安全车头问隔才能避免头尾相
Traffic accidents on expressways are relatively small, but accidents in the event of traffic accidents are generally vicious traffic accidents, causing serious consequences of vehicle damage and casualties. Therefore, the regularity of traffic safety should be analyzed according to the performance of the expressway. The law of driving speed At present, the driving speed on the expressway is rather high, especially on the downhill road, the car can reach 140 ~ 180km / h and the van can reach 80 ~ 120km / h. It is unsafe to drive at this speed because the design speed of the expressway is 100 ~ 120km / h. The flat curve radius, longitudinal slope, line-of-sight and ultra-highways of the expressway are limited by the design speed. Driving speed It is safe to drive at the designed speed range. Driving beyond the designed speed is not safe and traffic accidents may occur. In order to exert the fast and safe performance of the expressway, the maximum speed and the minimum speed should be limited on the expressway. According to the actual situation in our country, the maximum speed limit of expressway is 100 ~ 120km / h, the minimum speed is limited to 40 ~ 60km / h It is advisable. The law between the front of the car driving in the road need to maintain a safe front asked to avoid head and tail phase