Cal. Streets and Highways Code § 670.5 : California Streets And Highways Code — State Highways — The Care And Protection Of State Highways — Permit Provisions — Display of flags Date: 8 Sep 2016 TEXT PDF Current through the 2016 Legislative Session The Flag of the United States of America and the Flag of the State of California may be displayed on a sidewalk located in or abutting on a state highway situated within a city, if the type of flag-holder and the method of its installation and maintenance are not in violation of the department's rules. Ca. Sts. and High. Code § 670.5