All About, Roundabouts!

Whether you love ‘em or hate ‘em, it’s National Roundabout Week!

Roundabout Trivia:

How big the world’s largest roundabout?

The largest roundabout in the world is located here in Putrajaya, Malaysia, with a diameter of 3.5 kilometers or 2.17 miles!

What are other names for roundabouts?

Traffic circles, Rotaries

How many different types of roundabouts are there?

Lots! Just to name a few: full-stop, modern, single-lane, mini, multi-lane and turbo

When was the roundabout invented?

It is thought that one-way circular intersections were invented by a French architect, Eugene Henard, in 1877.(5) During the same period, the American architect William Eno was also proposing his plan for small circles to alleviate traffic congestion in New York City.

When did roundabouts appear in the U.S.?

The first modern American roundabouts were built in the spring of 1990 in Summerlin, a rapidly growing planned community on the west side of Las Vegas.