How Do Roundabouts Work in the UK?
Give way to traffic already on the roundabout coming from your right, drive clockwise, position yourself in the correct lane before entering, and signal left as you exit. These four rules apply to every UK roundabout.
The full rules are set out in Highway Code rules 184 to 190. This guide covers everything from basic approach to multi-lane roundabouts, signalling, and what happens to your insurance if you have a roundabout accident.
Give way to traffic already on the roundabout, choose your lane before you arrive, and signal as you leave.
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What is the basic give-way rule?
Give way to traffic coming from your right that is already on the roundabout. All traffic moves clockwise, and you can only enter when there is a safe gap.
What counts as a safe gap?
A safe gap means you can join without causing any vehicle already on the roundabout to brake or change direction. If they would need to slow down for you, wait for the next gap.
Why is this rule so important?
Failing to give way to the right is the most common cause of roundabout collisions in the UK. If you enter without giving way and cause an accident, you will almost certainly be found at fault.
How should you approach a roundabout?
Read the direction signs, select the correct lane well before the entrance, reduce your speed, and check for traffic from your right. The Highway Code recommends using the Mirror-Signal-Manoeuvre routine on approach.
Which lane should you use?
Use the left lane for the first exit or going straight ahead. Use the right lane for later exits or turning right.
On roundabouts with more than two lanes, follow the road markings. If the markings are worn or missing, apply the general rule: left for left, right for right, middle for straight ahead.
What if you are in the wrong lane?
Do not cut across lanes at the last moment. Enter the roundabout in the lane you are in, complete the circuit, and come back for another attempt.
How should you signal at a roundabout?
Your approach signal depends on which exit you are taking, but you should always signal left when leaving the roundabout. Begin your left signal after you pass the exit before yours.
What are the signalling rules by exit?
| Exit direction | Signal on approach | Signal when leaving | Lane position |
| First exit (turning left) | Left | Left (keep signalling) | Left lane |
| Straight ahead | None | Left (after passing previous exit) | Left or as marked |
| Right turn or full circle | Right | Left (after passing previous exit) | Right lane |
Why does the exit signal matter most?
Signalling left as you leave tells drivers waiting to enter the roundabout that you are about to clear their path. Without it, they cannot tell whether you are exiting or continuing around.
How do multi-lane roundabouts differ?
Multi-lane roundabouts follow the same rules but require stricter lane discipline. Stay in your chosen lane throughout and do not change lanes while on the roundabout.
What is the biggest multi-lane mistake?
Changing lanes on the roundabout itself. Vehicles in adjacent lanes may be heading to different exits, and a sudden lane change is the most common cause of multi-lane roundabout collisions.
Learner drivers often find multi-lane roundabouts the most challenging part of driving. Practising with a qualified instructor before the test builds confidence and reduces risk.
How do mini roundabouts differ?
Mini roundabouts follow the same give-way rule. The main difference is that larger vehicles may need to drive over the central island due to their turning circle.
What are the most common roundabout mistakes?
Failing to give way, entering too fast, changing lanes on the roundabout, and forgetting to signal when exiting are the four most common errors.
How can new drivers avoid these mistakes?
Practice is the most effective solution. Young drivers should spend extra time on roundabout practice with a supervising driver before going solo.
A black box policy rewards safe driving habits, including smooth approaches to roundabouts, which can help lower premiums over time.
Is it illegal to go around a roundabout more than once?
No, there is no legal limit on how many times you can circle a roundabout. Going around again is always safer than making a dangerous last-second exit.
How does a roundabout accident affect your insurance?
A roundabout accident is treated like any other road traffic accident. Report it to your insurer regardless of fault, because failing to do so could affect your cover.
A fully comprehensive policy covers damage to your own vehicle as well as third-party claims.
Who is usually at fault?
The driver who failed to give way is almost always found at fault. If you entered the roundabout without giving way to traffic from your right and a collision occurred, your insurer will likely record it as an at-fault claim.
Our tips to lower your premium explain how to manage costs after a claim.
Does a roundabout claim affect named drivers?
If a named driver on your policy caused the accident, the claim is still recorded against your policy. Both the policyholder and the named driver may see premium increases at renewal.
Frequently Asked Questions (FAQs)
No, signal right only if you are taking a right-hand exit or going full circle. For the first exit signal left on approach, and for straight ahead no approach signal is needed.
If your exit is before 12 o’clock (the halfway point), use the left lane, and if it is at or past 12 o’clock, use the right lane. This is a simplified version of the lane selection rule.
The same give-way rule applies: give way to traffic from your right. There is no priority based on the size of the road you are coming from.
Go around again and never reverse, stop suddenly, or cut across lanes. Circling the roundabout a second time is always the safest option.
Yes, common test failures include not giving way, poor lane discipline, incorrect signalling, and hesitating after committing to enter. Examiners expect confident, correct use of roundabouts.
Yes, UK roundabouts flow clockwise because traffic drives on the left. In most of continental Europe roundabouts flow anticlockwise and give-way rules vary between countries.
Check vehicle insurance requirements to make sure you are properly covered before driving on UK roads.