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Question 4197

You must turn on the front fog light when driving...

  1. in fog or heavy rain.
  2. in an additional lane.
  3. through a tunnel with insufficient lighting.
Show answer and explanation

Correct answer: in fog or heavy rain.

Front fog lights are for use when fog, heavy rain, snow, smoke, or dust greatly reduces visibility. Otherwise, they are only allowed on narrow roads with signs warning of many curves. Neither a poorly lit tunnel nor an additional lane allows their use. In the image, the passenger car coming toward you in the fog has its front fog lights on.

Reglamento General de Circulación (Real Decreto 1428/2003), texto consolidado