The Traffic Capacity of Roundabouts, Kimber, R.M., TRL Laboratory Report LR942, 1980.
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, June 2000
Wisconsin Roundabout Guide, December 2008
NCHRP Synthesis 264, Modern Roundabout Practice in the United States, TRB, 1998
Crash Reductions Following Installation of Roundabouts in the United States, IIHS, March 2000
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
Article on RODEL and Gap Theory, by Barry Crown
Publications by Ourston Roundabout Engineering - A list of publications specifically by Ourston Roundabout Engineering, Inc.
General Roundabout Research - An extensive list of publications pertaining to roundabout research.
Roundabout Guideline Publications - A list of resources for roundabout guidelines.