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Crash and injury reduction following installation of roundabouts in the United States

Author

Listed:
  • Retting, R.A.
  • Persaud, B.N.
  • Garder, P.E.
  • Lord, D.

Abstract

Objectives. This study estimated potential reductions in motor vehicle crashes and injuries associated with the use of roundabouts as an alternative to signal and stop sign control at intersections in the United States. Methods. An empiric Bayes procedure was used to estimate changes in motor vehicle crashes following conversion of 24 intersections from stop sign and traffic signal control to modern roundabouts. Results. There were highly significant reductions of 38% for all crash severities combined and of 76% for all injury crashes. Reductions in the numbers of fatal and incapacitating injury crashes were estimated at about 90%. Conclusions. Results are consistent with numerous international studies and suggest that roundabout installation should be strongly promoted as an effective safety treatment.

Suggested Citation

  • Retting, R.A. & Persaud, B.N. & Garder, P.E. & Lord, D., 2001. "Crash and injury reduction following installation of roundabouts in the United States," American Journal of Public Health, American Public Health Association, vol. 91(4), pages 628-631.
    • Handle: RePEc:aph:ajpbhl:2001:91:4:628-631_1
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    Cited by:

    1. Maryam J. Al-Kaabi & Munjed A. Maraqa & Yasser S. Hawas, 2020. "Development of a Composite Sustainability Index for Roadway Intersection Design Alternatives in the UAE," Sustainability, MDPI, vol. 12(20), pages 1-18, October.
    2. Oxley, Jennifer & Langford, Jim & Charlton, Judith, 2010. "The safe mobility of older drivers: a challenge for urban road designers," Journal of Transport Geography, Elsevier, vol. 18(5), pages 642-648.
    3. Golnaz Ghafghazi & Marianne Hatzopoulou, 2014. "Simulating the environmental effects of isolated and area-wide traffic calming schemes using traffic simulation and microscopic emission modeling," Transportation, Springer, vol. 41(3), pages 633-649, May.

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