Why is the intersection of Shuangliu North Expressway closed?

High-speed exits are closed on major holidays, and other small stations are also closed for temporary control because of the large traffic volume of trunk lines. Ensure the passage of main roads. Or temporarily control yellow-card trucks and dangerous goods. Make sure the car passes quickly. If the traffic volume of the small station is not small, it will continue to increase at a high speed. There will be more and more cars on the main roads, which will make it more inconvenient for vehicles to pass.

Expressway is closed when the visibility is less than 100 m due to wind, rain, snow and fog. The whole road was closed when the ice and snow slipped. In case of natural disasters, bad weather conditions or major traffic accidents that seriously affect traffic safety and it is difficult to ensure traffic safety by taking other measures, the traffic management department of the public security organ may implement traffic control.