yes, there are many, pull out an old police call or betty bearcat book if you have one, it'll list most of them, or better yet a beyond police call book...
alot of the busn groups though are using frs/gmrs so listen up on those and the 455 - 470mhz groups. some law enforcement andlots of busn in that group, like city buses, checker yellow cab (in cayce) and others...