First Aid and Behaviour at Accident Scenes
First actions
Stop, switch off engines if you can do so safely, and protect the scene. Warn other traffic - hazard lights, a warning triangle at a safe distance, a visible position. Call the emergency number 112 and give a precise location, the number of casualties, and any hazards such as fire or spilled fuel. Do not move an injured person unless there is immediate danger such as fire or a risk of further collision.
Helping casualties
Check responsiveness and breathing. If the casualty is not breathing normally, start chest compressions: push hard and fast in the centre of the chest, about 100–120 per minute, and continue until help arrives or the casualty recovers. If breathing, place them in the recovery position. Control bleeding with direct pressure. Keep the casualty warm and talk to them calmly. Do not give food or drink, and do not remove a helmet unless you must to keep the airway open.
Legal and human duties
Leaving the scene of an accident you were involved in is a serious offence. You must stop, give your details, and help within your ability. Witnesses should stay and give statements.
Traps
Questions test whether you should move a casualty (usually no), whether you should remove a helmet (only if essential), and whether you should give water (no). Another trap is the emergency number - 112 across the EU. Some questions ask what to do first: protecting the scene so no one else is hurt comes before detailed first aid.
Rule of thumb
Protect, alert, then treat - in that order.