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In the News

The Economic Efficiency of Roundabouts

In every single metric, roundabouts beat intersections in efficiency. That is the conclusion of a new study published on the Priceonomics website. Click here for the article

The UK not only boasts 25,000 (the most in the world, as a proportion of total road space), but maintains the “British Roundabout Appreciation Society,” a collective of grateful denizens who tout the roundabout as “an oasis on a sea of tarmac.”

Average delays are reduced by 65% and the maximum approach delay measured by seconds per vehicle is cut by nearly three quarters. The merge-in-turn approach is a classic example of a co-operative solution to the challenges posed by busy road intersections. As Richard Thaler notes below, roundabouts require collaboration between users for the social good.

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