Zhangshi Expressway generally stipulates a minimum speed of 60 kilometers per hour and a maximum speed not exceeding 120 kilometers per hour. Below is relevant information about expressway speed limits: 1. Relevant Introduction: Maximum speed: Expressways should indicate the driving speed of lanes, with the maximum speed not exceeding 120 kilometers per hour and the minimum speed not less than 60 kilometers per hour. On expressways, the maximum speed for small passenger vehicles should not exceed 120 kilometers per hour, while other motor vehicles should not exceed 100 kilometers per hour. 2. Relevant Regulations: According to the "Implementation Regulations of the Road Traffic Safety Law," when encountering low visibility weather conditions such as fog, rain, snow, dust, or hail on the expressway, and visibility is less than 200 meters, drivers should turn on fog lights, low beams, marker lights, and front and rear position lights, and the speed should not exceed 60 kilometers per hour, maintaining a distance of more than 100 meters from the vehicle ahead in the same lane. When visibility is less than 100 meters, drivers should turn on fog lights, low beams, marker lights, front and rear position lights, and hazard warning flashers, and the speed should not exceed 40 kilometers per hour, maintaining a distance of more than 50 meters from the vehicle ahead in the same lane. When visibility is less than 50 meters, drivers should turn on fog lights, low beams, marker lights, front and rear position lights, and hazard warning flashers, and the speed should not exceed 20 kilometers per hour, and they should exit the expressway from the nearest exit as soon as possible.
