Some people "ride the trucks" by radio (i.e. FDs), some people "ride the rails", and others well, um ride other kinds of vehicles by radio.
I admit to the occasional fancy of "garbage frequencies" (in contrast to "garbage" frequencies). I blame the local PD for going to EDACS Pro-Voice six years ago. Besides, I have sometimes missed (or nearly missed) the weekly morning pickup, and that is a practical application.
One 5-channel LTR system I recently figured out, turned out to be nothing but trash and recycling trucks.
http://www.radioreference.com/modules.php?name=TRSDB&sid=3250
The official records were of no use; the system was made up of channels listed under other systems. They all used the same distinct-sounding ANI data bursts (like GE-Star) and that helped pull it together. Just in case anybody in this area (or anywhere...) actually cares, although it's a long way from Ohio.
Dave