Driver Comprehension of Flashing Yellow Arrows Status: ActiveProject Start Date: 07/20/2020Subscribe for Updates Summary: Although the Federal Highway Administration considers flashing yellow arrows (FYAs) a dramatic improvement over circular green (CG) lights for indicating permitted left-turns at signalized intersection, driver complaints and some high-profile crashes have called into question how well drivers understand them. Time-of-day changes between protective and permissive phasing may be contributing to driver confusion. This research study plans to test driver comprehension of different traffic signal indications and develop guidance on appropriate implementation of FYAs for various conditions. Final Deliverables: Related Materials: New Project: Driver Comprehension of Flashing Yellow Arrows - (Blog Post) Research Need Statement 583 - (Other) Related Research: Development of Guidelines for Permitted Left-Turn Phasing Using Flashing Yellow Arrow Development of Guidelines for Flashing Yellow Arrows for Protected/permissive Use