What do the illuminated red lights on the vehicle in front indicate?
A)That there is fog.
B)That I am driving through a through road.
C)That the vehicle is braking.Correct
The brake light must be used to indicate to other drivers and road users behind the vehicle being driven that the service brake is being applied, the intention to bring it to a stop, or the intention to considerably slow down the vehicle.
We can also signal this by moving the arm alternately up and down with short, quick movements.