Due to a traffic congestion, you have to considerably reduce the speed of your vehicle. Must you warn, whenever possible, the vehicles travelling behind you?
A)Yes, by using the hazard lights.
B)Yes, by repeated use of the brake lights or by alternately moving the arm up and down.Correct
C)No, making warnings is prohibited, as they may cause confusion.
Except in the case of imminent danger, the driver who wishes to considerably reduce speed must ensure they can do so safely and warn by repeated use of the brake lights or by alternately moving their arm up and down with short, quick movements.