Flashing Yellow Arrow


  • Physical Address
  • Municipal Plaza Building
    114 W. Commerce, 6th Floor
    San Antonio, TX 78205   
  • Mailing Address
  • P.O. Box 839966
    San Antonio, TX 78283-3966
  • Phone
  • 210.207.8022


  • Mike Frisbie, P.E.
    Director and City Engineer
  • Anthony Chukwudolue, P.E.
    Assistant Director
  • Razi Hosseini, P.E.
    Assistant Director
  • Christie Chapman
    Interim Assistant Director
  • Arthur Reinhardt, P.E., C.F.M.
    Assistant Director
Flashing Yellow Arrow Left Turn Signal

What are the benefits?
Research on the use of FYA left-turn signals has shown to improve intersection safety by giving drivers better understood directions while allowing traffic engineers to operate traffic signals in the most efficient manner. A comprehensive seven year study completed by the National Cooperative Highway Research Program (NCHRP) on behalf of the Federal Highway Administration, found that drivers made fewer mistakes with the new FYA signals than with traditional left turn signals.

Where will they be used?
The flashing yellow arrow left-turn signal has been installed at several intersections throughout the City of San Antonio. Installation of the flashing yellow arrow will continue to be implemented at existing and new traffic signal locations city wide.

Flashing Yellow Arrow Postcard (PDF - English)
Flashing Yellow Arrow Postcard (PDF - Spanish)