Section 21100.1 Of Article 3. Local Regulation From California Vehicle Code >> Division 11. >> Chapter 1. >> Article 3.
21100.1
. Whenever any city or county, by ordinance or resolution,
permits, restricts, or prohibits the use of public or private
highways pursuant to this article, any traffic control device erected
by it on or after January 1, 1981, shall conform to the uniform
standards and specifications adopted by the Department of
Transportation pursuant to Section 21400.