Channelized Multilane Roundabout Design Guidance

Some multilane roundabouts have recorded elevated frequencies of property damage-only crashes. A potential solution is the use of channelized multilane roundabouts. These configurations, which remain uncommon in the United States, establish more clearly defined driving paths within the circulatory roadway. This cuts down on weaving and lane-change conflicts that are common at standard multilane roundabouts. Despite their demonstrated promise for improving roadway operations, The Kentucky Transportation Cabinet (KYTC) Roundabout Design Guidance does not include material on channelized multilane roundabouts. Several channelized multilane roundabouts are being developed across Kentucky, but the Cabinet lacks agency-specific guidance to support consistent design and evaluation of this roundabout configuration.

Language

• English

Project

• Status: Active
• Funding: $130,000.00
• Contract Numbers:

  KYSPR 27-699

• Sponsor Organizations:

  Kentucky Transportation Cabinet

  200 Mero Street
  Frankfort, KY  United States  40622
• Performing Organizations:

  University of Kentucky, Lexington

  Kentucky Transportation Center College of Engineering, 176 Raymond Building
  Lexington, KY  United States  40506-0281
• Principal Investigators:

  Asher, Jill

  Jasper, Jeff

  Thompson, Travis

• Start Date: 20260701
• Expected Completion Date: 20270630
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Channelized intersections; Highway design; Multilane highways; Roundabouts
• Identifier Terms: Kentucky Transportation Cabinet
• Geographic Terms: Kentucky
• Subject Areas: Design; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 02000578
• Record Type: Research project
• Source Agency: University of Kentucky, Lexington
• Contract Numbers: KYSPR 27-699
• Files: RIP, STATEDOT
• Created Date: Aug 26 2026 5:04PM