The content is available in Trainz PE if you are currently subscribed to Plus.
The advantage of Plus is you get access to all the DLC as part of your subscription for $100 per year (roughly). If you were to purchase the DLC separately, you are talking about at least a thousand dollars if not much more. The advantage then is you own all the DLC no matter what.
As far as I know, you can access content you created, such as a route for example, but any content that came from packages is inaccessible. I may be mistaken and others can correct this.
Unfortunately, aside from Trainz plus also providing faster download speeds for the dls, it's just more of a nuisance since some dlc is locked behind Trainz plus, which still doesn't make any sense to me. It's kind of shady to lock dlc behind a subscription and not make it available for purchase. It's like if Microsoft locked a few random Train Sim World 5 dlc behind gamepass. I get that N3V is a small team of developers
but making
any dlc exclusive to a subscription (a.k.a locking content behind a subscription wall), just rubs people like me the wrong way. We should have the option to buy any and all Trainz dlc. If N3V Games want to increase the money they make, so they can keep improving and adding to Trainz, then the last thing they should even consider is making dlc exclusive to their Trainz Plus subscription. Trainz Plus does save money,
but we should still have the option to buy Trainz Plus exclusive dlc, especially since the game is ridiculously DRM-heavy and the current state of gaming is proving DRM to be more harmful than helpful.
You don't even own the dlc, since all official dlc from the Trainz Store and Steam are plagued with DRM, even the game itself (except the physical copies of older Trainz games) is DRM-plagued. I have to say, I don't know how the hell N3V Games managed to make the game and official dlc insanely difficult to split open, but somehow, they did. It's impressive honestly. Especially when it comes to Trainz Plus, you don't own the dlc at all. It's no different from Netflix or DisneyPlus or Adobe Photoshop. You're pretty much renting the dlc, literally (in general you're renting the game and dlc any way since you don't actually own any Trainz stuff you buy, which includes any digital copy of any game from the franchise). Again, Trainz Plus isn't actually bad. In my opinion, it's worth the money. I just take issue with them locking certain dlc behind Trainz Plus. I hate to say this since DTG is nothing but scummy practice while N3V Games hasn't done anything out of line yet, but N3V Games should take a page from DTG's Rail Subscription book. Trainz Plus exclusive dlc like the Amtrak Superliner pack should still be purchasable. I'm fine with buying Trainz dlc individually just as I am fine with subscribing to Trainz Plus, however I prefer to buy dlc, not rent it.