Cal. Sts. & High. Code § 11005

“City street,” as used with regard to streets located within a city or city and county, means any “street” located within the city or city and county, except a “freeway,” “state highway,” or “county highway” as defined in Sections 23.5, 24, and 25. “City street,” as used with regard to streets located within a county, means any “street” located within the county, except a “freeway” or “state highway,” as defined in Sections 23.5 and 24.