He wants only the Limited trips to use artics, and that just isn't feasible without completely changing the way every single run is set up.
I'll use an example...
Operator X starts his day and his first trip to Hunts Point is on the local. Going by his logic, he naturally should get a shorty (we'll say 7746). He finishes his first trip, and his next trip going to Washington Heights is also a local. Finishes that trip also with no problem.
Now his next trip to Hunts Point is a limited trip. Once again, going by his logic, he's supposed to have an artic. Operator X has 7746 and has a limited trip to do to Hunts Point. Now what is he to do?
That's the whole point I'm trying to make...