Happy Thanksgiving everyone.
The Turpike effectively bought the Parkway a couple of years ago. This caused a merge of a lot of resources between the two roadways. The dispatchers for the State Police moved from Cranbury (Turnpike) moved to the Woodbridge site, the Turnpike Operations dispatchers (maintenance and tows) moved to Woodbridge as well to join the Parkway State Police Dispatchers.
The Turnpike is now the parent agency between the two roadways and they reimburse the State Police for all vehicles, equipment and Trooper I salaries.
Since the vehicles now all belong to the TPA, all plates will say TP at the begining. The HA plates will be phased out as the registrations expire, I presume.
Both roadways now fall under Troop D and are commanded by a Major. The Turnpike is a seperate region, commanded by a Captain the Parkway is a seperate region also commanded by a Captain. There was a short time when they called it Region E of Troop D, but that was short lived.
Hope this helps!