“Street patrol” work or activity shall mean that work or activity for or on behalf of a private patrol enterprise of walking or operating a motor vehicle on or about, or in any way patrolling, the public streets, highways, or thoroughfares in the County as a security, surveillance, or guard service. (§ 3, Ord. 685, eff. September 12, 1973, as amended by § 3, Ord. 702, eff. April 17, 1974)