Evaluation Indexes of the Impact of Vehicle Bumping at Bridge-Head on Driving Safety

Vehicle bumping at bridge-head directly affects traveling comfort and safety.Investigative statistic and driving experiment indicate that heart rate 's variation and driving acceleration of vibration have obvious relativity to the degree of vehicle bumping at bridge-head,and can be regarded as the evaluation indexes of the impact of vehicle bumping at bridge-head on the traffic safety.The research result denotes that the driver's heart rate,compared with steady driving heart rate,increases more than 10 times per minute with serious bumping,it leads to driving strain and has considerable harm to driving safety.