Study on Setting of Highway Speed Limit Signs Based on Driver Behavior

"Speeding" is a major concern in many highway traffic accidents. As a tool for controlling vehicle speed, speed limit signs play an important role in traffic control. In order to strengthen the alerts of speed limit signs, it needs to be placed continuously at certain intervals. Using cognitive theory, the paper establishes a speed limit sign setting model based on driver behavior. On the basis of this model the driver simulation was conducted on an independent R&D vehicle. A driving simulator at the Southwest Jiaotong University was used, and data of the forgotten time and acceleration pulse time under speed limit signs at varying speeds was obtained. The suggestions of speed limit signs at set intervals were then given.