What is the meaning of three-level control of expressway in Anhui Province?

Three-level control refers to the implementation of traffic control when the expressway encounters bad weather such as fog, ice, snow and strong wind, and it is difficult to ensure traffic safety by taking other measures. When implementing traffic control, temporary control measures such as limiting the speed and flow of vehicles should be taken as far as possible.

Criteria for judging the three-level control: When the visibility is greater than 100 m and less than 200 m (on-site judgment basis: the length of the dashed line of the expressway lane boundary 15 m), the three-level control shall be implemented. The temporary speed limit of the controlled road section is 80 km/h; Traffic vehicles must turn on fog lights, position lights and front and rear position lights to keep the distance between vehicles not less than 80 meters.

Extended data:

After the implementation of traffic control on the expressway, the high-speed traffic police will send patrol cars to patrol the controlled sections, grasp the road information in time, take snow melting and deicing measures, and strive to restore traffic conditions as soon as possible. When the visibility of the expressway is 50 meters to 100 meters or there is snow and ice, which has partially affected the normal traffic, it will be released intermittently and at a speed limit, and large buses are prohibited from entering the expressway.

When the visibility of the expressway is less than 50 meters or there is snow and ice, which seriously affects the traffic of vehicles, the first-class traffic control is implemented, and vehicles are prohibited from entering the controlled section. All toll stations along the controlled section are blocked, and the traffic diversion measures are implemented at the underpasses of toll stations with diversion conditions at both ends of the blocked section. Highway visibility 100 meters to 200 meters, three-level traffic control, intermittent release, speed limit release.

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