Topic: Vehicle lights and horn · Nº 240 / 839

Question picture

Durante el día y con niebla densa, ¿podremos usar el alumbrado de largo alcance?

During the day in dense fog, can we use main beam?

  • ANo, sólo podremos usar el alumbrado delantero y posterior antiniebla.No, we may only use the front and rear fog lights.
  • BSí, y además junto con el posterior antiniebla.Yes, and also together with the rear fog light.
  • CNo, cuando hay niebla densa está prohibido usar el alumbrado de largo alcance.No, main beam is prohibited in dense fog.
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Correct answer

  • BSí, y además junto con el posterior antiniebla.Yes, and also together with the rear fog light.
Explanation

Main beam can be used as long as we do not dazzle other road users and are not in a built-up area. In dense fog it is allowed but not recommended, because the light beam can reflect off the water droplets in the air. This can dazzle other road users whom we may not see, or even dazzle ourselves. Something similar happens in heavy rain, because the light reflects off the road markings and can be a nuisance. So the best thing is always to use dipped headlights, and the rear fog light, which is compulsory.

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