If a driver's brake lights are not functioning, what signal must they use when slowing down?

En español: Si las luces de freno de un conductor no funcionan, ¿qué señal debe utilizar al reducir la velocidad?

A Flash hazard lights only
B Sound the horn
C Move the arm up and down out of the window Correct answer
D Flash headlights at oncoming traffic

Why this is the correct answer

When the brake lights are not working, the driver must move their arm up and down out of the window to warn vehicles behind of the speed reduction.

Topic: Speed

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