The most restrictive AspectAny valid visual indication of a Signal as displayed to the driver. More of a Controlled SignalA Signal that is cleared from Red (other than by Emergency Replacement Switch or Signal Post Replacement Switch) from a Control Point by a Signaller or ARS on e... More, or the aspectAny valid visual indication of a Signal as displayed to the driver. More of an
Automatic SignalA Signal controlled by the passage of trains. It does not require any action by the Signaller or ARS. Automatic Signals are usually Passable. More which is displayed when no trains are present and no
Routes set.