When determining the safety distance from the vehicle travelling ahead...
A)you must take into account the characteristics of the vehicle travelling ahead.
B)you must take into account speed exclusively.
C)you must take into account speed, visibility and the condition of the road surface.Correct
Vehicles must, when travelling behind other vehicles, leave a distance that allows them to stop without colliding in the event that the vehicle ahead brakes suddenly. When deciding on this distance, particular account must be taken of the speed at which they are travelling and the grip and braking conditions.