Check the status of the casualties. Assess if the person is conscious or unconscious. Shake them lightly and shout to them. If you do not get a reply the victim is unconscious.
Treat the quietest person first, those screaming can at least breathe. Always suspect spinal injuries.
Our priorities are to keep airways open, provide resuscitation if needed and to treat serious bleeding. Other casualties should be kept still and warm.
Encourage people to stay where they are – people should stay in their vehicles unless it is too dangerous for them to be there.
After checking for danger, you must check for a response from the casualty. The casualty
will be either conscious or unconscious.