Thanks guys!
I have heard a repeater on 152.945 with DPL 174 with a few conversations relating to a Millville base and garage.. so that probably is there operations frequency. Not much activity seems odd? Anyway I know Bridgeton school buses used to be on the Centerton 900 MHz LTR site but they decommissioned then 4 frequencies and have reassigned them.
Delsea school buses many years ago were on the Williamstown 900 LTR site but left..
Still trying to find there School bus transportation frequencies.