Normal and Special Signal Aspects

3 lamp searchlight signals

Aspect	Description	Normal Meaning	S28S meaning	S90P meaning
	all red	STOP
	yellow over red	approach mainline		approach mainline (outermost track)
	green over red	proceed on mainline		proceed on mainline
	red yellow red	approach first siding	approach bypass	approach bypass (first inward from main)
	red green red	---none---	proceed on bypass	proceed on bypass
	red red yellow	approach second siding	approach service track	approach second station track
	red yellow yellow	---none---	approach multiple terminal tracks	approach station (inner) track

2 lamp searchlight signals

Aspect	Description	Normal Meaning	S81S meaning
	all red	STOP
	yellow over red	approach mainline
	green over red	proceed on mainline
	red over yellow	approach siding	approach crossover to Southbound track
	yellow over yellow	---none---	approach crossover to Southbound track then cross back to Northbound track