Roundabout
The sign indicates a roundabout.
When You See This Sign
When you see the D3 sign it means you are approaching or at a roundabout and that specific roundabout rules apply. Slow down, look to the left and give priority to vehicles in the circulation; choose and stay in the correct lane and signal when you leave the roundabout.
Rules & Regulations
- The D3 sign indicates that you are at a roundabout and that roundabout rules apply there.
- You normally must yield to traffic in the roundabout — give priority to vehicles already circulating in the roundabout (they come from the left).
- Drive in the indicated direction (counterclockwise in right-hand traffic) and follow any road markings that indicate lane choice and lane changes.
- Follow specific signs and markings for pedestrian and bicycle crossings; give priority to pedestrians and cyclists where signs or crosswalks indicate it.
Tips for Drivers
- Reduce speed well before the roundabout and choose the correct lane in plenty of time according to markings and your intended exit.
- Look to the left before entering and be prepared to stop if there is traffic circulating — vehicles in the roundabout have priority.
- Use your turn signal to indicate when you intend to leave the roundabout, not when you enter (occasionally signal when entering if needed to clarify your intended lane).
- In multi-lane roundabouts: choose your lane according to which exit you will take and avoid changing lanes inside the roundabout at the last moment.
Common Mistakes
- Believing you have priority and entering without yielding to vehicles from the left.
- Changing lanes late or in the middle of the roundabout instead of being in the correct position before entering.
- Forgetting to signal at the exit or using indicators at the wrong time (e.g., signaling when entering the roundabout instead of exiting).
Test Yourself
Road Sign: Roundabout
What should you be aware of here?
- A You are approaching a roundabout and must give way to traffic in the roundabout.
- B You must come to a complete stop before entering the intersection.
- C The road becomes one-way ahead.
- D The sign shows that speed is automatically reduced in the roundabout.
Exam Tip
On the theory test you may be asked who has priority in a roundabout — the safe answer is that traffic in the roundabout (coming from the left) has priority unless otherwise indicated. Be prepared for questions that combine lane choice and exits (which lane to choose for a specific exit).
Did You Know?
Roundabouts were introduced at many intersections to reduce serious collisions and improve traffic flow. The D3 sign is common at both small local roundabouts and larger junctions and is often supplemented with road markings and directional arrow signs for lane choice.
Frequently Asked Questions
Do I always have to yield when I see the D3 sign?
Yes, normally you must yield to vehicles already circulating in the roundabout because they come from the left. Only if specific signs or signals indicate otherwise do different rules apply.
When should I use my turn signal in a roundabout?
You should normally not signal when entering the roundabout, but use your indicator to clearly show when you intend to leave the roundabout. In some situations you may signal on entry to warn others about your intended lane, but the main rule is to signal at the exit.
How do I know which lane to choose in a multi-lane roundabout?
Follow road markings and signs that show lane choices; choose your lane well in advance depending on which exit you will take. If unsure, choose the right lane for the first or second exit and avoid changing lanes close to the exit.
Do cyclists and pedestrians have priority at roundabout exits?
It depends on how the crossing is designed; if there is a crosswalk or cycle crossing, pedestrians and cyclists often have priority according to signage. Be extra attentive to separate cycle lanes and road signs that regulate their priority.
Related Road Signs
Practice more in the app
Study Swedish road signs and driving theory in English. 314 signs with rules, tips and quizzes.