Traffic jams in the tunnel are dangerous: what to do in an emergency
Tunnels are objects where traffic is complicated by a number of objective factors, and therefore the safety rules are special. An accident underground is more dangerous than on the surface, given the difficulty of avoiding obstacles, visibility, ventilation, and limited opportunities for emergency services to arrive.
Fortunately, according to SSPDaily, there are a number of effective rules that can help you out a lot when driving through a tunnel. This, by the way, also applies to other underground structures, such as crosswalks or parking lots.
For example, according to Article 115 of the General Traffic Regulations, "when driving underground, the driver must turn off the engine every time the vehicle stops." The article also specifies that this should be done "2 minutes after the vehicle stops and until the vehicle can move further with the parking lights on".
Therefore, USA News states, if you are stuck in a traffic jam in a tunnel, the best thing you can do is to turn off the engine, turn on the emergency (signal) lights and leave the lights on. In general, you should behave as you would if your car broke down on the highway.
The rules of behavior in underground traffic jams, in the event of an emergency, also recommend that, if possible, you move towards the nearest emergency zone. If there is none, stop the vehicle as close to the right side of the road as possible and turn on the emergency alarm, then ask for help.