There are no separate traffic rules applying specifically to driving in roundabouts. The traffic rules that otherwise apply must be adapted to this.

When you drive in a roundabout, it is required that you are considerate and cautious so that no danger arises, and other traffic is not unnecessarily obstructed or disturbed.

For example, your speed as you approach a roundabout, your position in the roadway and your use of direction indicators are important for other road users to be able to understand what you are planning to do and where you intend to go. It is also necessary that you think about where you position your vehicle in the roadway and that you use your indicators correctly when driving in a roundabout with multiple lanes.

Giving way

At a roundabout you must give way to traffic from both directions. It is important to maintain the flow of traffic. If you are required to give way, you must demonstrate this clearly by reducing your speed or stopping in good time. It is normally significant who crosses the give-way line first.

Positioning your vehicle in your lane

A rule of thumb is that your position in a lane provides useful information to other road users about where you are going, and that the same rules that apply at regular junctions also apply to roundabouts.

Two or more lanes approaching a roundabout

If you plan to exit the roundabout to the right, you should enter the roundabout in the right lane. If you are going straight ahead, use the lane that is most practical and appropriate, preferably the right lane. If you are exiting the roundabout to the left, you should enter the roundabout in the left lane. If you need to change lanes, you are required to give way.

No zipper procedure

The rules for merging (zipper procedure) do not apply. This is the case even where the roundabout has only one exit.

Use of direction indicators

As a general rule of thumb, you must signal in good time before you turn or change your vehicle’s position in your lane, but not in a way that may cause misunderstandings.

  • If you are turning right at the first exit, signal to the right in good time before you drive into the roundabout and keep your indicators on until you have left the roundabout.
  • If you are going straight ahead in a roundabout, signal to the right when you are level with the last exit before yours. Keep your indicators on until you have left the roundabout.
  • If you are turning left in the roundabout, it may in some cases be useful for other road users if you signal to the left before entering the roundabout. Inside the roundabout, start signalling to the right instead when you are level with the last exit before yours. Keep your indicators on until you have left the roundabout.

Change lanes in a roundabout

If you are changing lanes inside a roundabout, you must give way to other road users, and you must signal clearly using your direction indicators before you change lanes.

Illustrations of driving in roundabouts
Main rules for driving in roundabouts: Positioning – low speed – give way – signalling. Photo: Statens vegvesen
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