ON 
OFF
1) It
is a subsidiary signal which has no independent aspect in the ON position and
shall be a miniature light provided with ‘C’ marker plate.
2) It is provided below a stop signal.
Calling-On signal may be provided below
any stop signal except LSS. Under approved special instructions it shall be
provided below starter.
3)
This signal shall not show any light in the ON position. When taken off it shows a miniature yellow light.
4) Calling- on signal is used –
a) To receive a train during main signal
failure.
b) To receive a train on an obstructed
road.
5) It
shall be taken off only after the train has stopped at the signal.
Loco
pilots responsibility
1) LP shall always obey
the aspect of the main signal below which Calling-on signal is provided. If the
signal is at ‘ON’ he shall bring the train to a stop at the foot of the signal.
2) After bringing the
train to a stop, if the Calling-on signal is taken off, he shall draw ahead
cautiously and be prepared to stop short of any obstruction.
3) The speed of the
train shall not exceed 15 kmph.
4) Calling-on signal is
interlocked with points and hence clamping and padlocking is not required.
