How do multi-lane roundabouts work?

Multi-lane roundabouts function like a traffic signal with multiple lanes. Signs are placed along the roadway prior to the roundabout, informing motorists of the movements that are allowed in each lane. For instance, at a signal, left turns are generally not allowed from a right lane and right turns are not allowed from a left lane. The same is true in a multi-lane roundabout. Always follow the signs to choose the correct lane.

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1. Do roundabouts work?
2. Are roundabouts safer for drivers than traffic signals?
3. Are roundabouts safer for pedestrians than traffic signals?
4. Are roundabouts less expensive than traffic signals?
5. Do roundabouts have less delay than traffic signals?
6. How do multi-lane roundabouts work?
7. What is the difference between a roundabout, traffic circle, and rotary?
8. Do roundabouts accommodate buses/trucks?
9. What should I do if I am in a roundabout at the same time as an emergency vehicle?
10. What impacts do roundabouts have on surrounding property?
11. Why do rural roundabouts have sidewalks?
12. What NOT to do