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

[DeMila]

When entering a two-way traffic tunnel, the vehicle should turn on the width marker lights or low beam headlights. Additional information: 1. Purpose: To alert oncoming vehicles while also improving driving visibility. High beam headlights should not be used in tunnels because their intense light can dazzle oncoming drivers, creating a blackout effect that may lead to accidents. Another reason for using low beams is to prepare for potential sudden power outages in tunnels - this makes it easier for following drivers to see the position of vehicles ahead and maintain safe distances to prevent rear-end collisions. 2. Special precautions: Reduce speed and turn on lights before entering the tunnel; maintain sufficient safe distance; never use high beams; do not change lanes; strictly observe speed limits; accelerate promptly after exiting the tunnel; avoid honking inside the tunnel.