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Iowa State University--Becoming the Best

Best Practices and Recommended Strategies for Shared Left Turn Lanes at Signal Control Approaches


Principal investigators:

Co-principal investigators:

Project status


Start date: 05/01/05
End date: 08/31/06


Sponsor(s): Iowa Department of Transportation

About the research


The work described in this proposal was to complete a synthesis of practice related to dealing with shared left turn lanes at signalized intersections. This research provided a first step in documenting the state of practice, crash experiences, and operations and signal control strategies to improve safety and efficiency at approaches having these conditions.