RSC-Cajon Pass Route. What Provider Did The Track Signals?

On the RSC Cajon Pass route. What provider made the track signals? There is no RailNetwork folder inside the Cajon Pass folder yet the route loads with track and signals...... I find that one weird.... Is the track and signals referenced from a different route for Cajon? The signals look like the ones from the BNSF Chicago route.
Thanks
Thanks