AUTOMATIC BLOCK SIGNAL RULES FOR ENGINEMEN AND TRAINMEN.

RULE 800A - Home Signals

COLOR RED.
OCCASION FOR USE Block is not clear.
INDICATION Stop.
NAME Stop Signal.
 

RULE 800B - Home Signals

COLOR GREEN
OCCASION FOR USE Block is clear.
INDICATION Proceed
NAME Clear signal.
 

RULE 800C - Distant Signals

COLOR YELLOW.
OCCASION FOR USE Home signal or signals in advance at stop or track obstucted between home and distant signals.
INDICATION Proceed with caution to the home signal.
NAME Caution signal.
 

RULE 800D - Distant Signals

COLOR GREEN.
OCCASION FOR USE Home signal or signals in advance at proceed.
INDICATION Proceed.
NAME Clear signal.
 

RULE 800E - Home and Distant Signals on same Mast.

COLOR Upper arm RED, lower arm YELLOW
OCCASION FOR USE Block is not clear.
INDICATION Stop.
NAME Stop Signal.
 

RULE 800F - Home and Distant Signals on same Mast.

COLOR Upper arm GREEN, lower arm YELLOW
OCCASION FOR USE One block is clear, second block in advance is not clear.
INDICATION Proceed through block prepared to stop.
NAME Caution signal.
 

RULE 800G - Home and Distant Signals on same Mast.

COLOR Upper arm GREEN, lower arm GREEN.
OCCASION FOR USE Two blocks ahead are clear.
INDICATION Proceed.
NAME Clear Signal.