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FHWA Turbo Roundabouts

Mark P. Rossow, Ph.D, PE Retired

This online engineering PDH course describes an alternative form of multi-lane roundabout, called a “turbo roundabout.” Though most roundabouts in the United States are single-lane roundabouts, multi-lane roundabouts are becoming increasingly common. Some of these multi-lane roundabouts have experienced higher than expected frequencies of sideswipe—same direction crashes. In the Netherlands in the 1990s, the turbo roundabout was introduced with the goal of influencing driver behavior and reducing lane change conflicts in a way that would address the crash types occurring in multi-lane roundabouts. In recent years, the Netherlands, Germany, Poland, and Canada have implemented turbo roundabouts with positive effects on safety. The turbo roundabout has the same general operating characteristics as modern roundabouts but utilizes notably different geometrics and applications of traffic control devices.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.

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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.