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Safety Benefits of Roundabouts

  • Statistically, roundabouts are vastly safer than conventional signalized intersections*:
    • 35% reduction in all accidents
    • 78% reduction in fatal and injury accidents
    • 89% reduction in accident-related pedestrian injuries
  • Unlike a signalized intersection, roundabouts don't force drivers to stop when there is no traffic. Motorists are only required to stop when there is conflicting traffic.
  • With fewer stops and hard accelerations, less time idling means reduced pollution and fuel use.
  • They require no electronic operation, which results in operational cost savings.
  • They complement other community values with quieter operation and are aesthetically more pleasing.

Fact:

In the past five years, there have been no fatal accidents at roundabouts in CDOT's Northwestern region (Region 3).

* Source: FHWA-SA-07-015 Crash Reduction Factors Sept 2007


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