RTC (Technician) Scenario

You are working as a double Technician crew on an EA when you respond to an RTC, motorcycle vs car. Control advises you are the nearest vehicle, with a Paramedic EA responding 20-minutes away. You arrive on scene and can see there has been a head on collision with a motorcycle and car. The motorcyclist is lying some distance away from the crash. The car driver approaches you and explains he’s ok, by the motorcyclist seems to be in a lot of pain and hasn’t moved.