Signal-controlled roundabout
Lights on every arm. A green light gets you to the line, but what is already on the roundabout still comes first.
The light and the line are two different questions
The signals meter the arms so that no one arm can starve the others. They do not hand you the roundabout. Green means your queue may move up; the give-way line still means look right. Driving off a green straight into a circulating car is marked as junction observation, which has been DVSA's most-marked fault in all nineteen years it has published the list.
Reading two things at once
The work is keeping your eyes moving between the light ahead of you and the traffic on your right, and being ready to go the moment both allow it. Sitting through a green because you were only watching the roundabout gets marked as hesitation.
The traffic is the same every time
Fixed seed, fixed timestep, including the signal cycle. Every attempt gives you the same lights and the same cars.
Common questions
Does a green light mean I have priority?
It means you may move up to the line. Traffic already on the roundabout still has priority when the roundabout itself is not signalled at that point.
What if the lights are out?
Then it is an ordinary roundabout: give way to the right.
The rest of the set
- Single-lane roundaboutFour arms, one lane round. Give way to the right, take the second exit.
- Three-arm roundaboutThree arms in a T. From the side road the second exit is a right turn, so it needs a right signal.
- Mini roundaboutPainted island, same priority rules, and you still have to go round it.
- Double mini roundaboutTwo minis, one after the other. Each is its own give way. Read them one at a time.
- Two-lane roundaboutTwo lanes round, spiral arrows on the road. Right lane and a right signal for the third exit.
- City gyratorySix arms, two lanes, uneven spacing. One arm only joins and one only leaves. Count carefully.
- Magic roundaboutFive minis around a ring that runs the other way. Read them one at a time and it is just five give ways.
Also included: the manoeuvre simulator and the 3D drives of the routes around your own test centre.