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

In the event of a traffic jam in a tunnel, you should switch on your hazard warning lights to alert other drivers to the stopped traffic and help prevent rear-end collisions. You must also keep a safety distance of about 5 meters from the vehicle in front while stopped. This space allows for easier maneuvering if evacuation becomes necessary and provides added safety. You do not need to leave or secure your vehicle immediately—that is only required if there is a fire or the situation becomes dangerous. By remembering these steps, you can react correctly and safely in tunnel traffic jams in the future.