Safety implications of the use of the flashing yellow arrow for permissive left turns.

747723125PDFTech ReportCaliforniaCalifornia. Dept. of Transportation. Division of Research and InnovationCTC & Associates LLCUS Transportation CollectionThe use of the flashing yellow arrow (FYA) for permissive left turns is relatively new to California, with at least fiveinstallations approved under a 2006 Federal Highway Administration (FHWA) Interim Approval memorandum.Inclusion of formal guidance for the optional use of FYA in the 2009 edition of the Manual on Uniform TrafficControl Devices for Streets and Highways (MUTCD) is expected to lead to heightened interest in applying the FYAwithin California, and Caltrans would like to know more about the safety implications of the use of the FYA forpermissive left-turn lanes, particularly at intersections with railroad-preempted traffic signals