Your driving instructor probably never told you about front fog lights ... Maybe he didn't know!

Front fog lights are usually mounted low down and give a broad flat beam. This reduces the amount of light that is reflected back by water droplets in the air.

the most benefit from front fog lamps can be gained at night, especially on roads with street lighting. If you switch off your headlamps but leave on your front fog lamps other drivers will still be able to see you, but you will see more clearly because less light will be reflected back by the water vapour in the air.

Avoid the use of full headlamps when driving in fog at night - they will just reflect back and reduce your ability to see the road..