
What this sign means
Buses may proceed.
This is a traffic signal — a light-based control that tells you when you may go, must stop, or should proceed with caution. When you see it, work out what it changes about your driving — your speed, your position on the road, or what you are allowed to do next — and act early rather than late.
Where you will usually find it
Traffic signals appear at intersections, pedestrian crossings, level crossings and lane-control points. They manage conflicting streams of traffic — and remember the golden K53 rule: a traffic officer's hand signals override any signal or sign.
How it comes up in the exam
This sign appears in 1 practice question on this site. Test yourself:
Know them all?
The exam has 28 road-sign questions and you need 23 right. Drill the signs until they are automatic.
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