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Question 4644

There is fog and you are driving with your front fog lights on. Are you allowed to have your high beams on at the same time?

  1. No, it is prohibited.
  2. Yes, it is allowed, but it is not advisable.
  3. Only in dense fog.
Show answer and explanation

Correct answer: Yes, it is allowed, but it is not advisable.

Front fog lights may be used by themselves, with low beams, or even with high beams. Using both front fog lights and high beams is allowed if you are outside a built-up area and do not blind anyone. It is not advisable because the droplets in the fog reflect the high beams back toward your eyes, making it harder to see. In the image, the passenger car coming toward you has its front fog lights on.

Reglamento General de Circulación · Reglamento General de Circulación · Manual II. Cuestiones de Seguridad Vial, edición 2026