Magic Roundabout (Hemel Hempstead) viaduct. The BP building was found to be unstable due to defective reinforced concrete and the exit had to be closed. The building was demolished but the original route was not restored, although a newer side exit from the roundabout replaced the junction with Marlowes off a side road. Magic Roundabout (Hemel Hempstead) The "Magic Roundabout" in Hemel Hempstead, Hertfordshire, England, is the familiar name given to the Plough roundabout. The familiar name comes from the children's television programme, and is also used for a similar junction in Swindon and the M40 junction in Denham. The official name relates to
Haudagain roundabout Haudagain roundabout The Haudagain Roundabout is a roundabout in Aberdeen that bisects the A90 and A96. As all traffic going northbound to Inverness via the A96 or southbound to Dundee via the A90 must pass through this roundabout it is a notoriously busy and hazardous junction with large queues approaching all directions to the roundabout, especially during rush hour. It has been referred to as 'Scotland's worst roundabout'. In May 2011 it was crowned Britain's worst roundabout in Roundabout Idol 2011. The Magic Roundabout was voted top. The construction of Aberdeen Western Peripheral Route is aimed at reducing the congestion