If you arrive at the scene of an accident where a truck carrying dangerous goods has overturned or been damaged you must not approach the truck. In case of a leak there is a risk of fire, poisoning and explosion.
What you should do is to stay at a safe distance and call 112. If you can see which number combinations or symbols are on the dangerous goods signs – without going too close to the truck – you should inform the SOS operator about these when you call.
If a truck carrying dangerous goods is leaking or is on fire you should move to a safe distance, at least 300 metres away from the truck.