Turn on your hazard lights. Keep other vehicles back at least 30 metres. Turn off the crashed vehicle's engine if you can safely reach it.
Look, listen, and feel for breathing for 10 seconds. Watch chest movement. Place your cheek near their mouth.
Apply firm, constant pressure with a cloth to any bleeding wound. Do not lift the cloth — add more on top if it soaks through. Maintain pressure until ambulance arrives.
Unless there is immediate danger (fire, water), keep the person exactly where they are. Moving them risks spinal cord injury.
Talk to them calmly and constantly. Say your name, tell them help is coming, ask simple questions. A talking victim is a conscious victim.
Keep the victim warm — use a blanket, jacket, or anything available. Loosen tight clothing around neck and chest. Lay them flat unless breathing is difficult.
Chest compressions — hard and fast
Rescue breaths — tilt head back
Compression depth — push hard
Compressions per minute — keep the rhythm