Signals

As Railway Operation Simulator was originally built as a simulation of railways within the UK, the available signal types are based on the UK signalling system.

Photo	Track Element	Signal Type	Description
		Two-Aspect	The simplest type which can display aspects of Clear and Danger
		Three-Aspect	Displays aspects of Clear, Danger and Caution, with the last aspect indicating either that the next signal is at Danger, or the route is terminating.
		Four-Aspect	Displays all aspects described above with the addition of Preliminary Caution which indicates the next signal is at Caution.
		Shunt Signal	Used for shunt movements, has two aspects either Clear or Danger.