7: 00-9: 30 and 16: 30- 19: 30. According to the Notice of Traffic Management Bureau of Chongqing Public Security Bureau on Implementing Pass Management for Trucks in Main City, the peak hours of trucks in Chongqing are 7: 00-9: 30, 16: 30- 19: 30. With the increasingly serious traffic congestion problem, in order to alleviate the traffic pressure, various places have introduced truck restriction policies.