In Season 3, Episode 15 of 'Adam-12', "Log 26: LEMRAS"-- Reed and Malloy admire the bikes not the "bikers".
The LAPD introduces the LEMRAS (Law Enforcement Manpower Resource Allocation System) to assist in identifying high-crime streets, including part of Officer Pete Malloy and Officer Jim Reed's patrol area, which was used in stopping a rash of burglaries involving motorcycle-riding suspects.
"Oh Dear Lord! It's Hollister all over again!", cries one woman.