You're driving in fog. What should you do if you use front fog lights?

Possible Answers:

a. Switch them off if you drive into a built-up area

b. Switch off your headlights while your fog lights are on

c. Use them with main-beam headlights

d. Switch them off when visibility improves

Think you know the answer to this theory test question?

Crown copyright material is reproduced under licence from the Driver and Vehicle Standards Agency, which does not accept any responsibility for the accuracy of the reproduction. The Driver and Vehicle Standards Agency does not endorse in any way any advertisement displayed on this website.