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Question 6093

Because of a traffic backup, you must reduce your vehicle's speed considerably. Must you warn the vehicles traveling behind you whenever possible?

  1. Yes, by repeatedly using the brake lights or by moving your arm alternately up and down.
  2. Yes, by using the hazard lights.
  3. No, warning other drivers is prohibited because it may cause confusion.
Show answer and explanation

Correct answer: Yes, by repeatedly using the brake lights or by moving your arm alternately up and down.

Yes. Even when braking because of a traffic backup, warn those behind you whenever you can by pressing the brake pedal several times in a row or moving your arm up and down with short, quick movements. This reduces the risk of being hit from behind. Hazard lights are for other situations, such as when you have come to a stop on a freeway (autopista) or a high-capacity divided highway (autovía).

Reglamento General de Circulación — Real Decreto 1428/2003