In this web content, the author discusses the rise in popularity of roundabouts as a traffic control measure across the United States. The author, who specializes in transportation engineering, explains that roundabouts offer several advantages over traditional intersections controlled by traffic signals or stop signs, with safety being the most important one. The modern roundabout has evolved over time, with standardized design guidelines and yield-at-entry regulations. Roundabouts have fewer conflict points and reduce congestion, fuel consumption, and emissions. The Federal Highway Administration estimates that roundabouts significantly reduce serious and fatal injury crashes. The author also mentions that the installation of roundabouts is determined by factors such as congestion levels, accidents, public support, and funding. The adoption of roundabouts has been increasing, and some states have even implemented a “roundabout first” policy. Overall, love them or hate them, roundabouts are becoming more prevalent in the United States.
https://theconversation.com/what-are-roundabouts-a-transportation-engineer-explains-the-safety-benefits-of-these-circular-intersections-215412