I remember there being a Gmod construct map focused on trains, and there were railways all across the map. There were junctions all around it, and the junctions could be toggled using Wiremod.
Anyone knows what I'm talking about?
gm_trainconstruct2
EDIT: not sure if it's compatible with wiremod but there's still a lot of switches
might be wire construct.
[url]http://www.garrysmod.org/downloads/?a=view&id=63538[/url]