This is a matter of putting demands in order of priority. If an engine is still running, switch off the ignition. Liquid petroleum gas (LPG) is potentially explosive. Diesel is difficult to burn without a wick. Unleaded petrol is far more inflammable than 4-star. Most RTAs do not result in fire but a "no-smoking rule" should still be enforced.For more details on chemical and other hazards, see separate record Pre-hospital Care at Road Accidents.However, the police may be required to make the area safe and the fire service may be required if there is a need to extract victims from vehicles, tackle fires or deal with other hazards like chemical spillage. If the emergency services have been called, who has been called? The ambulance service is obvious. Has anyone called the emergency services? If not, make a very brief survey of the scene to be able to give them more information but do not delay getting help.Get them to place warning triangles in both directions. Unless people are trapped or unable to move, get them off the road and out of the way of further harm.Protect yourself: cover exposed skin, wear gloves and a hard hat if available.You do not want to become a casualty too. They are available with Velcro® DOCTOR signs. If you have access to a high visibility jacket, wear it (carrying a high visibility jacket is compulsory in some European countries).Leave on hazard lights and, if you have one, a green beacon.It may be best to park obliquely behind the incident to fend off oncoming traffic. One risk is that oncoming traffic may plough into those there.Accident scenes are dangerous places and the dangers come in several ways.
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