William Phelps Eno
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William Phelps Eno was an American businessman responsible for many of the earliest innovations in road safety and traffic control. He is sometimes known as the "father of traffic safety", despite nev
Honorary driver's license for Eno, issued by A. Bertillon, Préfecture de Police, Nancy, France, 1912
Traffic regulations first drafted by Eno, as issued by New York City on February 8, 1909
Columbus Circle rotary plan in Eno's Street Traffic Regulation, 1909
Roundabout
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A roundabout, a rotary and a traffic circle are types of circular road in which traffic is permitted to flow in one direction around a central island.
William Phelps Eno
…Eno are traffic regulations, the stop sign, the pedestrian crosswalk, the taxi stand, and pedestrian safety islands. He also helped to popularize the traffic circle and the one-way street, both older inventions. His rotary traffic plan was put into effect at Columbus Circle, New York City, in 1905; the Arc de…
The Hotel Indonesia Roundabout in Jakarta, Indonesia
A ring junction in Hemel Hempstead, UK
National Register of Historic Places plaque on the first traffic circle in the United States, at the intersection of River and Pleasant streets in Yarmouth, Massachusetts
Thomas Circle in Washington, D.C., 1922