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Question 5997

In a tunnel, what safe following distance must you leave from the vehicle traveling ahead?

  1. Only the distance sufficient to avoid colliding if it brakes suddenly.
  2. At least 100 meters when you do not intend to pass.
  3. 200 meters.
Show answer and explanation

Correct answer: At least 100 meters when you do not intend to pass.

In a tunnel, if you do not intend to pass, leaving enough distance to brake without a collision is not enough. You must stay at least 100 meters or 4 seconds behind the vehicle ahead, or 150 meters or 6 seconds if your vehicle's maximum authorized mass is over 3,500 kg. If you intend to pass where it is allowed, you must still keep enough distance to brake.

Real Decreto 1428/2003, de 21 de noviembre, por el que se aprueba el Reglamento General de Circulación