Signals

Test layout

Train starts in bk01:

Aspect bk01	Destination	bk00	bk01	bk02	bk03	bk04	bk05	bk06	Remark
Green	bk05	-	-	-	free	-	free	-
White	bk05	-	-	-	free	-	occ	-	stop in next block expected
Red	bk05	-	-	-	occ	-	occ	-
Yellow	bk04	-	-	-	-	free	-	-	thrown switch

Dutch signalling:

Aspect bk01	Destination	bk00	bk01	bk02	bk03	bk04	bk05	bk06	Remark
Green	bk05	-	-	-	free	-	free	-
White	bk05	-	-	-	-	-	-	-	not necessary
Red	bk05	-	-	-	occ	-	-	-
Yellow	bk05	-	-	-	free	-	occ		reduce speed to 40km/h
Yellow	bk04	-	-	-	-	free	-	occ	reduce speed to 40km/h
Red	bk04	-	-	-	-	occ	-	-
Green	bk04	-	-	-	-	free	-	free

Event	Next block	Overnext block	Thrown switches	Aspect	Remark
enter	free	free	no	green	proceed
enter	free	occupied	no	white	stop in next block expected
enter	occupied	-	-	red	stop
enter	free	-	yes	yellow	proceed restricted

Do we need more aspects?

Dutch signalling:

Event	Next block	Overnext block	Thrown switches	Aspect	Remark
enter	free	free	-	green	proceed
enter	free	occupied	-	yellow	stop in next block expected
enter	occupied	-	-	red	stop
enter	free	free	yes	flashing green with number	proceed
enter	free	occupied	yes	yellow flashing number	stop in next block expected

sometimes there is also a number board. The number multiplied by 10 is the speed in km/h for the train

Aspect	Translation
green	green
white	green with flashing number or flashing yellow with stable number in numberboard ; might be a hardware solution
red	red
yellow	yellow

remark: the color white is not used. A flashing signal could be used in some circumstances but in modelrailroad in my opinion not necassary. But:

flashing green : allowed to pass with the velocity number multiplied by 10 next block is free

flashing number and aspect yellow : allowed to pass with the velocity number multiplied by 10 keep braking the next signals aspect could be red.

Links:

Links: