If in the tunnels, during the movement of the vehicle, a vehicle breakdown occurred, due to which this vehicle was disabled:
Neither the driver nor the person being transported must smoke or handle an open flame . The independent heating of the disabled vehicle must be turned off in the tunnels .
Neither the driver nor the person being transported must smoke or handle an open fire . Independent heating of a disabled vehicle can be switched on in the tunnels .
Neither the driver nor the person being transported should handle an open fire, smoking can only be in places for this designated . Independent heating of a disabled vehicle can be turned on in the tunnels .