The analysis of highway rear-end collisions shows that more than 80% of the accidents are caused by the driver’s slow response, and more than 65% of the car collisions are rear-end collisions. Rear-end collisions caused by inaccurate spacing and improper control between vehicles traveling at high speed on expressways has become one of the main forms of traffic accidents in China in recent years. Although cars bring convenience to people, the following problems are also obvious: with the increase of vehicles, traffic accidents happen more frequently, causing an alarming number of casualties and property losses. This study provides a theoretical basis for the application and interpretation of the parking sight distance value stipulated in the Design Specification for Highway Alignment, and has certain practical guiding significance for improving the density and transportation efficiency of expressway vehicles and reducing the incidence of rear-end traffic accidents.Īs a fast, flexible and economical means of transportation, cars are generally favored by people over other forms of transportation.

The simulation results show that the calculation method of the safe following distance meets the requirements of keeping safe distance in the Implementation Regulations of Road Traffic Safety Law of the People’s Republic of China and provides a more specific reference basis for speed limit used on expressways. Matlab software was used for simulation analysis. Three different safe following distance calculation methods based on braking deceleration under different slope conditions are established. According to the requirements of the safe following distance between vehicles, the safe following distance of different braking system structures, different following states, different speeds and different slope sections on expressways is quantitatively analyzed. According to the characteristics of the safe driving of vehicles on expressways, the braking process of vehicles is analyzed using the principle of kinematics. As an important part of the vehicle active collision avoidance system, improvement of the minimum safe following distance model has aroused the interest of researchers at home and abroad.

Traffic analysis software