The hitbox is that way so they can easily be placed from a specific location outside the switch also because when the parts swap they still need to keep the same center and that's the main reason the hitbox is so oversized and behaves weirdly

what kind of weird hitbox do those parts have when placing, it spawns like 5 blocks out and logic input is 10 blocks downtrack.
but aside from that, works great

this is epic for those of us who want to use large rollers for guiding trains

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2938843085
Collection of all my US locos and Cars if you want better quality builds as that one is a very old build.

Locomotive https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2826444762

what loco is that ur using it looks like a nice build