How long should you spend checking to see if an unconscious casualty is breathing following an accident?

Explanation: Spend up to 10 seconds checking to see whether a casualty is breaking. Listen for breathing and check their airway is clear. Placing your cheek over their nose and mouth, feel for their break, and look for the rising and falling of their chest. If they don't appear to be breathing, begin chest compressions.

Category: Incidents, accidents and emergencies (2021)

References: The Official DVSA Guide to Driving: Section 16, Highway Code: Page 132