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Getting your head around roundabouts

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A roundabout designed under Australian guidelines encourages safer behaviour and better aligns with safe system principles than other forms of intersections

Benefits of installing roundabouts:

  • Traffic enters from one direction only, giving way to traffic from the right which reduces the number of conflict points
    There are 24 conflict points on a signalised four-way intersection, compared with four conflict points on a roundabout (Refer to Diagram 1 below). The safety and traffic flows of a signalised intersection depend on the geometry of the intersection and the timing of the signals.

Diagram 1: Conflict points on a signalised four-way intersection compared with a roundabout

  • Physically control the speed of vehicles entering and travelling through the roundabout on all approaches, reducing the incidence of high speed crashes
  • Modify the entry angle of vehicles to the intersection, which reduces the incidence of opposing approach, head-on and adjacent approach crashes
  • Reduce the severity of injury in crashes
  • Improved traffic flows due to less delays when compared to traffic signals.

Visit the My Licence website to find out how to safely use roundabouts