What are appropriate locations for roundabouts?
Roundabouts are appropriate at many intersections, including high crash locations and intersections with large traffic delays, complex geometry (more than four approach roads, for example), frequent left-turn movements, and relatively balanced traffic flows. Roundabouts can be constructed along congested arterials, in lieu of road widening, and can be appropriate in lieu of traffic signals at freeway exits and entrances.

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1. What is a roundabout?
2. How do roundabouts differ from older traffic circles and rotaries?
3. How do roundabouts affect safety?
4. What are the features of a good roundabout designs?
5. What are the common types of crashes at roundabouts? What can be done to prevent them?
6. How do roundabouts affect traffic flow?
7. Are there other benefits?
8. Can roundabouts accommodate larger vehicles?
9. How do roundabouts affect older drivers?
10. Are roundabouts safe for pedestrians?
11. Do drivers favor roundabouts?
12. What are the impediments to building roundabouts?
13. How common are roundabouts in the United States?
14. Do roundabouts require more space than traditional intersections?
15. What are appropriate locations for roundabouts?
16. What types of intersections may not be good candidates for roundabouts?