Roundabout constructed in 1972 in Swindon, Wiltshire, United Kingdom, designed by Frank Blackmore, inventor of the mini-roundabout. The roundabout joins five roads and consists of a two-way road around the central island, with five mini-roundabouts meeting the incoming roads. The name derives from the popular children's television series, "The Magic Roundabout", and is considered "magic" because traffic flows in both clockwise and anticlockwise directions. This is achieved by surrounding the main island with one smaller roundabout per entry/exit street. This pattern directs traffic in the usual clockwise (in LHT installations) or counter-clockwise (in RHD installations) manner around each mini-roundabout. Exiting the
Britannia Roundabout the roundabout, splitting it into two smaller roundabouts. The project cost was estimated at $3.2 million, and involved the removal of a small number of trees from the nearby parkland. In April 2014, the new and upgraded "Britannia Roundabouts" came into operation. Britannia Roundabout The Britannia Roundabout is a roundabout intersection on the eastern side of the City Ring Route near the city centre of Adelaide. Before it was upgraded in 2014, many minor accidents had occurred over the years at this former traffic black spot. The five roads which join the intersection in clockwise order are Fullarton Road (to