Double mini roundabout
Two mini roundabouts, one straight after the other. Each is its own give way. The second one does not inherit anything from the first.
One at a time
The mistake is treating the pair as a single junction, taking one decision and then coasting across the second line. Clearing the first island tells you nothing about the second: a car can be arriving at it from a road you could not see. Give way, go, then start again: new observation, new signal, new give way.
Signalling twice
Each roundabout gets its own signal on approach, chosen by the clock rule for that roundabout. Very often the two differ: right at the first, left at the second. Leaving the first signal on through the second is a signal fault, not a small thing.
The traffic is the same every time
Fixed seed, fixed timestep. The same cars arrive in the same order every run, which is what lets you practise the second decision as carefully as the first.
Common questions
Is it one roundabout or two?
Two. Two give-way lines, two priority decisions, two signals: that is what makes the layout worth practising.
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.
- Two-lane roundaboutTwo lanes round, spiral arrows on the road. Right lane and a right signal for the third exit.
- Signal-controlled roundaboutLights on every arm. Green gets you to the line: you still give way to the roundabout.
- 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.