Roundabout Evaluation and Design

Modern roundabouts are considered as an alternative intersection design and they may be effective in reducing the severity and injury crashes at intersections. Roundabouts have been used in several states in the US and the Illinois Department of Transportation (IDOT) is interested in promoting the use of roundabouts at appropriate locations to improve safety. IDOT does not have design guide for roundabouts. The objectives of this study are: 1) Identify 10 intersections in Illinois that have a potential to reduce fatalities and injuries using a roundabout design; 2) Evaluate existing roundabout design software; 3) Obtain feedback from IDOT District and Central offices about roundabouts; and 4) Develop a design/section guide for roundabouts.

Language

• English

Project

• Status: Completed
• Contract Numbers:

  R27-21

• Sponsor Organizations:

  Illinois Department of Transportation

  2300 S. Dirksen Parkway
  Springfield, IL  United States  62764
• Performing Organizations:

  University of Illinois, Urbana-Champaign

  1105 Newmark Civil Engineering Lab, 205 North Matthews Avenue
  Urbana, IL  United States  61801
• Principal Investigators:

  Benekohal, Rahim

• Start Date: 20070100
• Expected Completion Date: 0
• Actual Completion Date: 20080600
• Source Data: RiP Project 13638

Subject/Index Terms

• TRT Terms: Crash rates; Crash severity; Design; Highway safety; Intersections; Research projects; Roundabouts
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01460367
• Record Type: Research project
• Source Agency: Illinois Department of Transportation
• Contract Numbers: R27-21
• Files: RiP
• Created Date: Jan 3 2013 1:23PM