Incorrect!

You're driving on a clear night. Which lights should you use if the national speed limit applies and there's a steady stream of oncoming traffic?

Full-beam headlights
Sidelights
You selected this answer
Dipped headlights
Correct answer
Fog lights

DVSA theory test explanation

Use the full-beam headlights only when you can be sure that you will not dazzle other road users.