What lights should be turned on when a car enters a tunnel?

2 Answers
Bill
09/02/25 7:53am
When a car enters a tunnel, the headlights should be turned on. Below are relevant introductions about cars entering tunnels: 1. Observe warning signs before entering the tunnel: In front of the tunnel, there are traffic signs indicating width and height restrictions. You must clearly see the warning signs and drive accordingly. Warning signs are scientifically calculated, so you must trust them and follow the instructions to avoid problems. If you are careless and ignore them, you will have to bear the consequences. 2. Slow down and turn on lights before entering the tunnel: If driving during the day, the light will instantly dim as you enter the tunnel, and the human eye often takes a short time to adapt. Therefore, before entering the tunnel, you should reduce speed, increase the distance between cars, and turn on the headlights to safely enter the tunnel at a relatively slower speed. Generally, tunnels have clear speed limit signs, and you can drive according to the speed limit prompts before the tunnel.
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CarsonLee
09/15/25 3:02am
You must absolutely turn on your low beams when entering a tunnel to ensure the safety of yourself and other vehicles. The sudden dimming of light inside the tunnel means trailing cars may not see your position if you don't turn on your lights promptly, increasing the risk of rear-end collisions or sideswipes. When I drive, I always activate my low beams a few seconds in advance to ensure the road ahead is illuminated without dazzling other drivers. Remember not to use high beams, as they can impair other drivers' vision. Additionally, some tunnels have specific rules like speed limits or no lane changes, and having your lights on helps traffic cameras capture clearer footage. If your vehicle has automatic headlights, setting them to auto mode allows them to activate in low-light conditions, offering convenience and peace of mind. Wait a second or two before exiting the tunnel to let your eyes adjust to the brighter light before turning off your lights. In short, developing this habit significantly reduces accident risks.
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