I've had a West Virginia E-ZPass for years. When I acquired it, I needed it in a hurry, I was able to drive to Charleston one afternoon to obtain it, and it had the added bonus of being interchangeable between vehicles. Since my wife and I would never have need of it at the same time, she could mount it in her vehicle whenever she was driving into E-ZPass territory, and I could keep it in mine other times.
The WV Turnpike has changed its rules on its E-ZPass transponders. You can no longer move them between vehicles. Each vehicle has to have its own transponder. My transponder is now linked to my Saturn Vue, which is out of commission until I can get the charging issue fixed. (Still having no luck getting that done, or finding a way to bypass/disconnect the "mild hybrid" system where the charging fault seems to lie).
I've looked on their site, and see no way to change the transponder to another vehicle. The transponder is also old enough that there's a very real possibility that the battery is dead. It hasn't been used on a toll road for at least three years, if not longer.
Is the WV Turnpike matching transponder reads to license plate numbers at its toll booths? In other words, if I go ahead and put the transponder in a different vehicle, and the device reads correctly at the toll plaza, are they going to know that I wasn't driving the Vue? A non-read through an E-ZPass-only lane will no doubt trigger a violation.
I guess one option would be to go through a staffed lane and have the cash in hand ready to pay if the transponder doesn't read. Another option would be to shunpike. I may be traveling from Charleston to Beckley and Princeton before too long. The southern plaza will likely be off my route because I'll be checking out the Coalfields Expressway, and from the end of WV 121 near Mullens, I can take WV 16 and WV 10 to Princeton.
And is there a good way to check to see if the battery still works?
Beyond that, it's probably time for me to look into canceling my WV account and getting an E-ZPass unit that (1) can be moved from vehicle to vehicle, and (2) has no annual fees. Transponder discrimination isn't really an issue for me, as I expect that my major roadtripping days are over and I won't be using a lot of toll facilities in the Northeast anymore. I'd expect my travels to be mostly the WV Turnpike and the Louisville bridges.