If the injured person is unconscious, cannot move arms or legs, or a back injury is suspected, how does the Highway Code say they should be carried?

1. In a vehicle in which they can lie down, only on an improvised stretcher with a pad or rolled-up garment under the neck
2. Sat upright in a minibus seat with a seat belt only
3. Walked to the nearest clinic if they can be pulled to their feet
4. Placed face-down in a car boot