Development of Guidelines for Permitted Left-Turn Phasing Using Flashing Yellow Arrows Status: CompleteReport Date: 06/29/2015 Summary: MnDOT has instituted a policy to install flashing yellow arrows on all new signal heads. The purpose of this research was to determine the risk of using flashing yellow arrows at various times during the day. More data is needed but the research team was able to develop a tool to provide a risk value. Find the tool and an instructional video under related materials below. Final Deliverables: Report #2015-27 Technical Summary Related Materials: Flashing Yellow Arrows Tool Instructional Video - (Video/Webinar) Flashing Yellow Arrow Decision Tool Instructions - (Brochure/Handout) Flashing Yellow Arrow Decision Tool - (Spreadsheet Tool) Development of Guidelines for Permitted Left-Turn Phasing Using Flashing Yellow Arrows - (News/Publication Article) New Permitted Left-Turn Model Helps Improve Intersection Safety - (Blog Post) Related Research: Flashing Yellow Arrows Tool: Determining Time of Day Use Driver Comprehension of Flashing Yellow Arrows