That question applies to virtually any HO or OO scale model, even a bunch of the Thomas range. The simple answer is you are careful so you don't accidentally drop them, it would likely be pretty costly regardless of the railings - unlike PlaRail most scale models don't bounce very well not even diesels
Happily collecting things all my life...
(This post was last modified: 12-19-2021, 01:29 AM by Super.)