Magic Roundabout (Swindon) Junctions in the United Kingdom"; however, the roundabout provides a better throughput of traffic than other designs and has an excellent safety record, since traffic moves too slowly to do serious damage in the event of a collision. In 2010, the National Cooperative Highway Research Program concluded that the roundabout reduces injurious crashes by three quarters. The roundabout in Drove Bridge has not been the only Magic Roundabout in Swindon; the roundabout at Bruce Street Bridges was until recently a Magic Roundabout. It was converted into a conventional roundabout in 2016, but with many exceptions to highway code priorities, which
Roundabout flow on bridges, which are two viaducts creating a roundabout suspended over the ring road. Signal controlled roundabouts are common in the United Kingdom, Ireland and Spain (mostly the city of Valencia), where they have been introduced in an attempt to alleviate traffic problems at over-capacity roundabout junctions or to prevent some flows of traffic dominating others (around the M50 in Dublin for example). The Cherry Street roundabout in Kowloon, Hong Kong is also one such example. "Magic roundabouts" direct traffic in both directions around the central island. They are officially known as "ring junctions". The first magic roundabout was