Roundabouts are a very effective method of junction control, but queues can form in busy periods and there can be safety problems for pedestrians and cyclists. Signalising roundabouts allows better management of queues, but are there also safety benefits for pedestrians and cyclists? In 2003 the London Road Safety Unit undertook a study to measure the effect of traffic signals at roundabouts. Signal control is usually installed at a roundabout to improve traffic capacity and to balance a junction at high flows. Supporting reasons may include reducing collisions or provide surface level crossings for pedestrians. With the increasing vehicle demand, signal control at roundabouts is becoming a common measure in traffic management. The study analysed the casualty data at selected roundabouts ‘before’ and ‘after’ signal control was implemented. (Author/publisher)
Samenvatting