The D3 sign indicates you are approaching a roundabout, a junction where you must circulate in the direction shown by the arrows, typically counterclockwise in Sweden. This sign is crucial for anticipating merging and lane choices well in advance. Always remember to watch for lane markings, give way to vehicles already in the roundabout, and be aware of pedestrians and cyclists near exits.
Learn the key details of the D3 - Roundabout road sign, including its function, what it communicates to drivers, and how it applies in real traffic situations in Sweden. Use this overview to understand the sign clearly and recognise it confidently during the Swedish driving theory exam.
This sign indicates that the upcoming junction is a roundabout, shown by circular arrows on a blue background. It requires drivers to follow the roundabout circulation pattern, typically counterclockwise in Sweden. The sign helps drivers anticipate merging, yielding, and lane choice in good time. In real traffic, it is placed before or at the entry to a roundabout to clearly communicate the junction type and the required circulation direction.
You are approaching a roundabout and must circulate in the indicated direction.
Get clear, practical answers to the most common questions about the D3 - Roundabout road sign. Learn how the sign works, what rules it represents, and how it affects real driving situations. This FAQ strengthens your understanding and supports accurate decision making for the Swedish driving theory exam in Sweden.
The D3 sign's main purpose is to inform you that you are approaching a roundabout. It clearly signals that you must follow the circular traffic flow within the roundabout, usually in a counterclockwise direction in Sweden. This sign helps you prepare for the specific rules and traffic management of this type of junction.
When you see the D3 sign, you must not drive against the indicated circulation direction. It is also forbidden to cut straight across the central island, as this is extremely dangerous and illegal. Additionally, avoid changing lanes abruptly within the roundabout; plan your lane changes well in advance.
Upon seeing the D3 sign, you should prepare to enter the roundabout. Slow down and check for traffic. You must yield to vehicles already in the roundabout. Once safe, enter and follow the circulation direction. Choose the correct lane early for your intended exit and signal if required when leaving the roundabout.
Yes, the D3 sign is often accompanied by warnings or markings related to pedestrians and cyclists, especially near the exits of the roundabout. You must always be prepared to encounter them at designated crossings and proceed with caution, ensuring their safety as you enter or leave the roundabout.
A common mistake is failing to give way correctly to traffic already in the roundabout, or entering too quickly without checking. Another trap is not positioning yourself in the correct lane early enough for your intended exit. Remember, the D3 sign is an information sign, but it implies priority rules and specific circulation behaviour.
A clear reference image of the D3 - Roundabout road sign used in Sweden.

The D3 - Roundabout road sign may also be known by these alternative names or terms.
The D3 - Roundabout road sign is part of the Mandatory Signs (D) category, which groups together signs with similar rules and functions.