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Question 8137

In dense fog, what precautions should be taken?

  1. Reduce your speed and, if necessary, stop the vehicle.
  2. Maintain your speed and stay alert to following the traffic signs.
  3. None if there are no vehicles coming in the opposite direction.
Show answer and explanation

Correct answer: Reduce your speed and, if necessary, stop the vehicle.

In dense fog, you must slow down enough to stop within the distance you can see, and stop if you cannot continue safely. If so, stop off the roadway in a safe place with your position lights on. You must take these precautions even if there is no oncoming traffic, and maintaining your speed does not mean adapting it to the conditions. In the image, the oncoming car has its lights on.

Reglamento General de Circulación (RD 1428/2003), texto consolidado vigente