Roundabouts in Iceland: Rules and Guidelines

You will meet many roundabouts in Iceland, especially in and around Reykjavík. Most rules are the same as in other countries – but there is one important Icelandic rule for two-lane roundabouts that surprises many visitors.

⚠️ The most important rule: the inner lane has priority

In a two-lane roundabout, a car in the inner lane has right of way over a car in the outer lane when it exits. This means:

• If you are in the outer lane: watch out for cars leaving the roundabout from the inner lane, and give way to them.
• If you are in the inner lane: signal and exit carefully – but still check your mirrors, as not all drivers know the rule.

General rules

1. Give way when entering. Traffic already in the roundabout has right of way. Give way to cars coming from your left.
2. Choose the right lane. Use the outer (right) lane if you are taking the first exit. Use the inner (left) lane if you are going further around.
3. Signal when you exit. Turn on your right indicator before you leave the roundabout.
4. Keep your speed down when entering and driving through the roundabout.
5. Watch for pedestrians at crossings near the roundabout, and give them priority.

In winter

Roundabouts can be icy in winter. Slow down well before you enter, and avoid sudden braking or steering.

More information: Icelandic Transport Authority · Safe Travel Iceland