What is the speed limit in expressway, Shen Chang?

1, the speed limit of the expressway tunnel is 60mph; 2. The speed limit is 40 mph at high speed, and if it exceeds 20%, it is 80 mph 12 minute; 3, more than 50% of the prescribed speed is speeding, one-time deduction 12 points; 4. The speed limit is 50 kilometers per hour, and if it exceeds it, it is speeding; 5. The speed limit is 80km per hour. If it exceeds the speed limit, it will be regarded as speeding.

Speed limit standard from Shen Chang to expressway:

1. Bus speed limit: In general, the speed limit standard of Changsha-Shenzhen Expressway for buses is120km/h;

2. Speed limit of trucks: for trucks or trailers, the speed limit standard is generally100 km/h;

3. Speed limit in special weather: in bad weather conditions such as rain, snow and fog, the speed limit standard will be lowered, and the specific value will be determined according to the actual situation and the regulations of the road section management department;

4. Speed limit of construction area: If there is a construction area in expressway, the speed limit will be adjusted accordingly according to the construction situation, and usually it will be reduced below 60 km/h;

5. Speed limit in special areas: such as tunnels, bridges, toll stations and other special areas, there may be stricter speed limit requirements, generally between 60-80 km/h.

To sum up, the speed limit regulations of Changshen Expressway include 60 mph in high-speed tunnels and 40 mph in high-speed tunnels. If the speed exceeds 20%, 80 mph will be deducted 12 points; If the speed exceeds 50%, deduct 12 points; If the speed limit is 50 kilometers and 80 kilometers per hour, it is speeding.

Legal basis:

Regulations of the People's Republic of China on the Implementation of Road Traffic Safety Law

Article 78

Expressway shall indicate the lane speed, with the maximum speed not exceeding 120km and the minimum speed not less than 60km. The maximum speed of passenger cars traveling on expressway shall not exceed 120km, other motor vehicles shall not exceed 100km, and motorcycles shall not exceed 80km. If there are two lanes in the same direction, the minimum speed of the left lane is100km; If there are more than three lanes in the same direction, the minimum speed of the leftmost lane is110km, and the minimum speed of the middle lane is 90km. If the speed indicated by the road speed limit sign is inconsistent with the lane speed mentioned above, drive at the speed indicated by the road speed limit sign.