I'm fine if DRM cuts both ways. Manufacturer is free to try locking things down as long as that's disclosed, I'm free to tamper with something I own. They own the trains.
The manufacturer should be put out of business.
> Contracting Parties shall provide adequate legal protection and effective legal remedies against the circumvention of effective technological measures that are used by authors in connection with the exercise of their rights under this Treaty or the Berne Convention and that restrict acts, in respect of their works, which are not authorized by the authors concerned or permitted by law.
(DRM's a silly name, anyway; it should be called "technological measures" or "technological protection measures" or something.)
They might win in the short term but I can't imagine that would serve the train company well in the long term - lawmakers (who are typically octogenarians) often don't understand how software restrictions limit use of equipment traditionally enjoyed under property rights until they're interfered with. Like a train being geofenced.