It is daytime, there is fog, and your vehicle does not have front fog lights. Which lights must you turn on?

Correct answer: The low beams and position lights.

In fog, lights are required even during the day. If you do not have front fog lights, you must turn on your position lights and low beams. Position lights alone are not enough, and high beams cannot be used without them either.

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