Roundabouts are one of the first things that catch out visiting drivers in continental Europe, not because the concept is unfamiliar but because the details — which lane to take, when to indicate, who actually has priority — vary just enough between countries to cause hesitation. The core rule across nearly all of Europe is straightforward: traffic already on the roundabout has priority over traffic entering it, and you travel round it anticlockwise (in right-hand-driving countries), giving way to your left as you approach.
The basic rule of priority
In the large majority of European countries, vehicles already circulating on the roundabout have right of way over vehicles waiting to enter. As you approach a roundabout, you give way to traffic coming from your left (since you drive on the right and travel round the roundabout in an anticlockwise direction), and only pull out once there is a safe gap. This is sometimes signposted explicitly with a "give way" or "yield" triangle sign at the entry, and sometimes simply understood as the default rule of the road.
There is one significant and well-known exception: France's older, unmarked roundabouts in some rural and town locations historically operated under "priorité à droite" (priority to the right), meaning traffic entering the roundabout had priority over traffic already on it — the opposite of the now-standard rule. Almost all French roundabouts have since been converted to the standard give-way-to-the-left system and are signposted accordingly ("Vous n'avez pas la priorité" / "Cédez le passage"), but a small number of legacy roundabouts, mostly in quiet rural areas, may still operate the old way. If a roundabout in France isn't clearly signposted, slow down and watch what other drivers do before committing. Our guide to driving in France covers other local quirks of the French road network.
Choosing your lane
Larger roundabouts, especially in cities, have two or more lanes. The general convention across most of Europe: use the right-hand lane if you're taking the first exit or turning right, and the left-hand (inner) lane if you're going straight ahead, taking a later exit, or turning left (i.e., more than three-quarters of the way around). Lane markings or overhead signs at larger roundabouts usually spell this out with arrows for each exit — read them before you commit to a lane, since changing lanes mid-roundabout in heavy traffic is awkward and best avoided.
Smaller single-lane roundabouts, which make up the majority in towns and villages across Europe, remove this decision entirely: there's only one lane, so the only choices are when to enter and when to exit.
Indicating correctly
The convention that trips up the most visitors is when to signal. The general rule:
- On entry: indicate left if you're taking the first exit (in right-hand-driving countries) or going less than a quarter of the way round; otherwise, no indicator is needed on entry for a straight-ahead exit — some drivers do indicate right on entry if going more than halfway round, as a courtesy to traffic waiting to join.
- While circulating: no indicator needed unless you are about to take your exit.
- On exit: always indicate left just before leaving the roundabout at your exit, regardless of which lane you started in, so that waiting traffic knows you're about to leave.
Getting this slightly wrong rarely causes danger — it mostly causes minor confusion or a horn from a local driver who was expecting a signal. Watching the vehicle ahead of you is often the fastest way to pick up local habits at unfamiliar roundabouts.
Multi-lane and complex roundabouts
Some of Europe's larger roundabouts — the Arc de Triomphe in Paris being the most famous example — dispense with lane discipline almost entirely and operate on a "priority to those already circulating, merge as you can" basis with no lane markings at all. These are intimidating on first approach but are typically driven slowly, in heavy traffic, giving you time to react. If a roundabout looks genuinely chaotic, it's usually fine to simply follow the vehicle ahead of you and move at its pace rather than trying to plan an exact lane in advance. If you've hired a car for the trip, our guide to renting a car abroad covers insurance and excess questions that become more relevant in dense city traffic like this.
Roundabouts vs traffic-light junctions
Many countries, particularly the UK, France and the Netherlands, favour roundabouts over traffic lights at busy junctions because they keep traffic moving continuously rather than stopping it in cycles. If you're used to a country where four-way stops or traffic lights are the default junction type, expect roundabouts to appear far more frequently — including in small towns, where a single roundabout may replace what would elsewhere be a simple crossroads. If your trip also takes in a left-hand-driving country, note that the direction of travel around a roundabout reverses too — see our tips on driving on the left for how the same priority logic applies in mirror image.
When in doubt, slow right down. Approaching an unfamiliar roundabout below the speed you might otherwise choose costs a few seconds and gives you time to read signage, watch other traffic, and correct if you've picked the wrong lane. Nearly every roundabout mistake is more embarrassing than dangerous if you're moving slowly.
Pedestrians and cyclists at roundabouts
Larger roundabouts in cities often have pedestrian crossings and dedicated cycle lanes at each exit, set back slightly from the roundabout itself. Give way to pedestrians already on a crossing and watch carefully for cyclists, who may be circulating in a dedicated lane around the outside of the roundabout at a different pace from motor traffic. This is a common blind spot for visiting drivers focused on car traffic and priority rules — it's also worth reviewing what other documents you should carry when driving abroad, since traffic police in several European countries do carry out spot checks near busy junctions.
Frequently asked questions
Who has priority on a European roundabout?
In the great majority of countries, traffic already on the roundabout has priority over traffic entering it. The main historical exception was some rural French roundabouts under the old priorité à droite rule, though nearly all have since been converted to the standard system and signposted accordingly.
Which lane should I use on a multi-lane roundabout?
Generally the right-hand lane for the first exit or a right turn, and the left-hand lane for going straight on or taking a later exit — but always follow the specific lane markings and overhead signs at that roundabout, as local layouts vary.
Do I need to indicate on a roundabout?
Yes — always indicate left just before taking your exit. Indicating on entry is only needed for the first exit in most conventions; watching local traffic is a reliable way to pick up small variations.
Are roundabout rules the same in every European country?
The core give-way-to-traffic-already-circulating principle is close to universal, but lane conventions, indicating etiquette and signage style vary by country. If you're driving in several countries on one trip, expect small local differences and drive cautiously at unfamiliar roundabouts.
Sources and further reading:
- AA — European roundabout rules and driving-abroad guidance for UK motorists.
- RAC — country-by-country guide to European road rules.
- European Commission — road safety and cross-border driving information.