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Criteria and Guidelines for Three-Lane Road Design and Operation

Status:  Complete
Report Date:  03/13/2023


This project seeks to (1) codify existing guidance on three-lane road conversions through a review of existing research and practice and (2) conduct research needed to close identified, important, gaps in existing knowledge. The final products will be HCM-type model relating traffic demand and geometric/control design features to predicted LOS-based performance and HSM-type model relating the same to predicted crash experience.

Final Deliverables:

Related Materials:

Related Research: