Many studies cite major Roundabout benefits including reduced delays and improved overall safety, particularly in reducing the severest of intersection crashes and the number of injuries and fatalities experienced.

Reasons for the reduced number and severity of accidents at modern Roundabout applications include:

• 75 percent fewer vehicle conflict points compared to a conventional intersection design
• physical guidance and separation of the various movements
• lower and consistent speeds traversing the roundabout
• pedestrians cross only one direction of travel at a time

In a survey of U.S. departments of transportation, the main reasons highway agencies considered and/or constructed Roundabout s i ncluded greater safety, shorter delays, lower costs and improved aesthetics /urban design. Reasons given for not building Roundabout s included uncertainty that drivers could adjust, and questions about operations and safety.