How many meters should the accident warning sign be placed on the highway?

[LeTalia]

Highway accident warning signs should be placed at a distance determined by specific circumstances: 1. In the event of an accident on the highway, the warning sign should normally be placed at least 150 meters behind the vehicle; 2. In rainy or foggy weather, the distance should be increased to 200 meters. Precautions for driving on the highway include: 1. Both the driver and front-seat passenger should fasten their seat belts, and the driver should not answer phone calls; 2. Avoid sudden steering wheel movements while driving at high speeds; 3. Do not change lanes arbitrarily while driving. When changing lanes or overtaking the vehicle ahead, the turn signal must be activated in advance; 4. Overtaking is only allowed using adjacent lanes, and the vehicle must return to the driving lane immediately after overtaking. Vehicles must not straddle or drive on the lane divider lines; 5. Do not reverse, drive in the opposite direction, or make U-turns or turns by crossing the central divider.