Alex

You collided with him, here is what you should do: 1. Stop the car immediately and turn on the double yellow lights to warn the vehicles behind you to avoid rear-end collision. 2.A triangular warning sign should be erected 30 to 100 meters behind the car (the distance depends on the driving speed and road conditions). 3.Stay calm and do not panic. Even if it is a minor collision, you should get out of the car to deal with it or apologize, and check the casualties and vehicle damage of both parties in detail.