Protect, Alert, and Rescue are the three golden rules to be applied in case of accident.
French driving rules cover how to behave in the event of an accident. The deliberate failure to provide assistance in the event of an accident is a criminal offence in France.
The Penal Code, Article 223-6 states that "it is punishable by a maximum of 5 years imprisonment up to € 75,000 in fines” if you fail to help anyone though you are not expected to, if helping is likely to put you in danger.
So be sensible don't needlessly put yourself in harms way to try and help.
The P part of the PAR is protection to help those who may be injured and warn other drivers so they don't run into the back of the cars that may be blocking the carriageway.
Turn on your hazard lights, turn off the ignition and apply the handbrake; put on your Hi Viz Reflective Vest
and get yourself and the passengers out of the car. As well as the driver, all passengers must by law be wearing a Hi Viz Vest.
Use the right-hand side door (nearest to the hard shoulder side), and make sure your car is over to the side as far as possible (if it's moveable) and then get yourself and all of the passengers behind the guardrail, if there is one.
Place a Warning Triangle
at least 30 meters from the accident site to be clearly visible. (It's a legal requirement to carry a warning triangle while driving in France).
If your car is likely to be an obstruction, then you should get 150 meters behind the accident (again behind the guardrail if possible) and wave to slow down oncoming vehicles. You can use a spare Hi Viz Vest or a torch/flash-light if you have one.