What Lights Should You Turn On When Driving into a Tunnel?

[DallasLee]

When entering a tunnel, the vehicle should slow down and turn on the headlights (i.e., low beams, which will illuminate the front low beams and width indicators, while the rear brake lights will also activate). Here are the reasons for turning on headlights when entering a tunnel: 1. Due to the dim lighting inside the tunnel, turning on the headlights alerts vehicles ahead and behind to maintain a safe distance, ensuring driving safety. 2. During the day, the bright and glaring light outside the tunnel contrasts sharply with the relatively weak light inside, causing a brief period of eye adjustment when entering. This adjustment period can easily impair the driver's judgment of road conditions. Additional Information: When driving in a tunnel, maintain a steady speed, reduce speed before entering, follow other vehicles closely, and avoid overtaking.