Conditional Orders for Trains

This idea can also be called "station interrupts" which Factorio implemented in its 2.0 update. Conditional Orders are something also in OpenTTD within JGR's Patch Pack, but they don't offer a huge amount of flexibility over there. An additional thing I think we need for trains is the ability to have them monitor stations and their contents within their schedule vs just the station building itself telling the trains whether or not the stations and their contents are empty or full. The main idea with this would be to allow trains to skip station stops depending on various conditions. Ultimately the main goal being able to create a system where trains can wait at a depot (meaning like a yard or waiting station) then be called out when needed.

Ah the ones like signal stations?