CTRE is an Iowa State University center, administered by the Institute for Transportation.

Address: 2711 S. Loop Drive, Suite 4700, Ames, IA 50010-8664

Phone: 515-294-8103
FAX: 515-294-0467

Website: www.ctre.iastate.edu/

Iowa State University--Becoming the Best

Modern Roundabout Guidance for the Iowa DOT


Principal investigators:

Student researcher:

Project status


Start date: 04/01/06
End date: 09/30/07


Related publication: Planning-Level Guidelines for Modern Roundabouts (3.8 mb pdf) Nov 2008


Sponsor(s): Iowa Department of Transportation

About the research

Abstract: The main goal of this project is to provide the Iowa DOT with information and direction on roundabout policies, design guidelines, and public education. Project objectives include organzing and facilitating a task force, conducting a synthesis of practice of modern roundabout guidelines and policies, documenting best practices of states with successful programs, developing guidelines for implementation, developing draft roundabout policies, and assisting in public education efforts about roundabouts.

This research will advance Iowa DOT in its development to include roundabouts as a standard intersection alternative treatment rather than the exception.