Combined with the medical,psychological and physiological theory,the result of experiment analysis indicates that the fluctuating rate of heart rate is linear related to the speed that exceeds 100 km·h-1 in free flow conditions on straight sections.
h-1时,心率增长率与车速呈线性增长关系;非自由流条件下超车等驾驶行为对驾驶心理影响显著,心率平均增长率较自由流条件下高。