Accidents at 4-Arm Roundabouts, Maycock, G. and R.D. Hall,TRL Laboratory Report LR1120, 1984.
Geometric Design of Roundabouts, TD 16/07, U.K. Department for Transport, 2007.
The Design of Roundabouts, Brown, Dan, TRL State of the Art Reviews, London, HMSO, 1995. (This is an excellent book on the history and state of the art in roundabout design. Available from Her Majesty’s Stationery Office in the U.K.)
Design and Safety Information
Roundabout Design Guidelines, Ourston Roundabout Engineering, Inc. 2001
Roundabouts: An Informational Guide, FHWA, 2010
Wisconsin Roundabout Guide, March 2013
Feature Articles and Papers
Roundabouts: A Direct Way to Safer Highways, by Leif Ourston and Joe Bared, Public Roads, FHWA, Fall 1995
Clearwater Roundabout Report, by Barry Crown
Publications by GHD - A list of publications specifically by GHD Inc. staff.
General Roundabout Research - An extensive list of publications pertaining to roundabout research.
Roundabout Guideline Publications - A list of resources for roundabout guidelines.