What lights should be turned on when entering a tunnel with a car?

[DanielaAnn]

When entering a tunnel, the car should slow down and turn on the headlights. Here is the relevant information: 1. Because the light outside the tunnel is strong and dazzling during the day, while the light inside the tunnel is relatively weak, there will be a period of eye adaptation when entering the tunnel. During this process, the driver can easily affect the judgment of the road conditions. Turning on the headlights can help observe the road conditions and also remind other vehicles. 2. When driving in the tunnel, there are a few points to note: First, the speed should be smooth. Reduce the speed in advance before entering the tunnel, and also slow down when leaving the tunnel. This is to allow the eyes to adapt to the changes in light. Second, when driving in the tunnel, try to follow the car in front and avoid overtaking unless there is a special need.