When shall we use the hazard warning lights?
A)Only when the vehicle is stopped due to a breakdown or accident.
B)When the vehicle cannot reach the minimum required speed and there is a risk of rear-end collision.Correct
C)Only at night.
The hazard warning lights are NOT ONLY used when the vehicle is immobilised due to an emergency, but also when we drive at a speed below the minimum required and there is a risk of being rear-ended, both day and night, and when we stop due to traffic conditions (traffic jam), momentarily until we have several vehicles stopped behind us.