How to Design a Roundabout for Improved Traffic Flow and Safety

A single-lane roundabout in Dublin, Ireland. Photo by Lucas Miguel on Unsplash.

Roundabouts are becoming increasingly popular across the country—and for good reason. Their advantages are well-documented. Communities concerned about traffic safety or congestion can often make roads safer and quicker to navigate by implementing a roundabout.
Poorly designed roundabouts, however, can create just as many problems as they solve.
Here’s how civil engineers typically approach roundab…
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