When you are driving inside a tunnel, marked with sign 633:
Pick an answer to test yourself
The correct answer: You must turn on the front lights.
Inside a tunnel marked with sign 633 you must turn on the front lights. The question does not make fog lights required in the tunnel, and the other answers, changing lanes or overtaking, are not the correct answer.
This question appears in the theory test for license:B · private carA · motorcycle1 · tractorC1 · light truckC · heavy truckD · bus
