Research on Safe Following Distance on an Expressway Based on Braking Process Analysis

As an important part of the vehicle active collision avoidance system, improvement minimum safe following distance model has aroused interest researchers at home and abroad. According to characteristics driving vehicles on expressways, braking process is analyzed using principle kinematics. requirements between vehicles, different system structures, states, speeds slope sections expressways quantitatively analyzed. Three calculation methods based deceleration under conditions are established. Matlab software was used for simulation analysis. The results show that method meets keeping in Implementation Regulations Road Traffic Safety Law People’s Republic China provides a more specific reference basis speed limit expressways. This study theoretical application interpretation parking sight value stipulated Design Specification Highway Alignment, certain practical guiding significance improving density transportation efficiency expressway reducing incidence rear-end traffic accidents.