What must you do in case of a traffic jam in a tunnel?

In a traffic jam inside a tunnel, switching on your hazard warning lights alerts other drivers that traffic is slowing or stopping, increasing safety. Keeping a safety distance of about 5 meters to the car ahead helps prevent collisions if traffic suddenly stops or starts. It is important to stay in the vehicle rather than leaving it immediately because tunnels can be dangerous places due to limited space and air circulation. Only leave the vehicle if instructed by authorities or in case of an emergency. Following these rules helps ensure safety for everyone in the tunnel during a traffic jam.