Great Britain Theory Test Coach
Road markings and lightsQuestion 91 of 424
A traffic light with a black box and three round lamps, with only the bottom lamp lit in green

What does this signal allow you to do?

  1. Go on, whatever is ahead
  2. Go on if the way is clear
  3. Go on after you wait two seconds
  4. Go on only if you turn left
Show answer

Correct answer: Go on if the way is clear

Green means you may go if the way is clear. It does not mean you must go.

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

Practice road markings and lights

Questions last reviewed: 18 October 2026