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BDifficulty 2/5

You drive a car without front fog lights in thick fog, using dipped rather than main beam. Which lights must be on?

Correct answer

Position lights, dipped beam and rear fog lights.

Position lights, dipped beam and rear fog lights. Thick fog is a particularly adverse condition requiring rear fog lights. Article 106 allows front fog lights or dipped or main beam as forward lighting; this scenario uses dipped beam and excludes front fog lights. Main beam may reflect off fog and impair vision, and must never dazzle others. Switch rear fog lights off when particularly adverse conditions end.

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All options

  • Only position lights and dipped beam, without rear fog lights.

  • Position lights, dipped beam and rear fog lights.

  • Position lights alone.

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