Great Britain Theory Test Coach
Road markings and lightsQuestion 99 of 424
A black square with a white arrow pointing diagonally down to the left

What does this signal over your lane mean?

  1. Leave at the next exit
  2. Change lanes in the direction shown
  3. Stop in the lane
  4. Reduce speed to 30 mph
Show answer

Correct answer: Change lanes in the direction shown

A white diagonal arrow tells you to change lanes in the direction it points.

Source: The Highway Code (Department for Transport, GOV.UK), Light signals controlling traffic, Lane control signals

Practice road markings and lights

Questions last reviewed: 18 October 2026