Roundabouts
Informational video
How roundabouts work
Research papers 
Continued reliance on traffic
signals: the cost of missed opportunities to improve traffic flow and
safety at urban intersections; Casey Bergh, Richard A. Retting, Edward Myers, September 2005
Crash patterns and potential engineering countermeasures at Maryland roundabouts; Srinivas Mandavilli, Richard A. Retting, Anne T. McCartt, May 2008
Highlights from the Institute's research since 1969
Status Report newsletter
Vol 43, No. 4, June 9, 2008: Roundabouts can be even safer with some simple changes like better signs, lights
Vol. 40, No. 9, November 19, 2005: Best time to consider a roundabout? When a road is being built or an intersection is scheduled for modification; Clearwater, Florida roundabout; Vail, Colorado roundabout
Vol. 40, No. 7, August 6, 2005:
Urban arterials don't have to undergo major re-engineering to reduce
crashes and improve traffic flow
Vol. 38, No. 8, August 26, 2003:
More and more roundabouts in use
Vol. 36, No. 7, July 28, 2001:
Roundabouts reduce traffic backups as well as crashes involving injuries;
Motorists' acceptance of roundabouts increases with experience
Vol. 35, No. 5, May 13, 2000:
Roundabouts are becoming more familiar on US roads, not just for safety
reasons; New FHWA guide to roundabouts
Regulatory comment
Comment to the Agriculture and Transportation Barriers Compliance Board concerning
installations of traffic signals on pedestrian crosswalks at all roundabouts,
October 23, 2002 |
