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aspect until the line is clear upto adequate distance beyond the Home Signal of the
receiving station.
5. Once this system is introduced by the two Station Masters of the dispatching and
receiving stations at a nominated time after taking action, as far as possible,
simultaneously and train working started as per new modified system, as described in
paras above, the system will continue to operate automatically in the manner prescribed
above and the process of taking ‘OFF’ Advanced Starter and mid-section semi-automatic
signal need not be repeated by Station Masters of respective stations for every train.
Facility shall however exist to work the Advanced Starter as manual signals as and when
considered necessary by the controlling Station Masters. Facility of converting semiautomatic
Home Signal as manual or automatic signal shall continue to remain with the
Station Master. However, Home Signal will work as manual mode only during the time
modified system is in force.
6. Even with the change in the Signalling arrangement, for the Loco Pilot, all existing
Rules/Instructions for train passing in Automatic Signalling will be applicable. Thus, all
automatic signals in the section shall work normally and Loco Pilot will follow existing
GR/SR while passing/observing these signals.
7. To restore the normal automatic Signalling system at a pre-fixed nominated time, the
Station Masters of the train dispatching and train receiving stations will talk to each other
under exchange of private numbers and will re-introduce the normal system by operating
the switch on the panel or by clicking on the VDU with a mouse which will restore the
‘A/AG’ marker on the mid-section semi-automatic signal in the block section. The
condition of ‘A/AG’ marker of Home and Advanced Starter will continue to be
determined by the Station Masters of the controlling stations based on local conditions.
8. System of working during failure of signals when working trains in modified
Automatic Signalling system.
(a) Failure of Advanced Starter: When ‘A’ marker is extinguished, written authority
to pass the signal and enter the next Signalling section will be given when previous
train has passed the next mid-section semi-automatic signal and adequate distance
beyond. If the indication of mid-section semi-automatic signal and clearance of
section between Advanced Starter and mid-section semi-automatic signal cannot be
ascertained, the Station Master of the train dispatching station will talk to the Station
Master of the receiving station and after confirming under exchange of private
numbers that the previous train has cleared the mid-section semi-automatic signal
and adequate distance beyond, he will authorize the Loco Pilot to pass the defective
Advanced Starter signal in ‘ON’ position. If clearance of the section between
Advanced Starter signal and the mid-section cannot be ascertained by indication on
his panel, the station Master will authorize the train to pass defective Advanced
Starter signal in ‘ON’ position only after confirming from the Station Master of the
receiving station under exchange of private numbers that the previous train has
arrived complete at the receiving station.
(b) Failure of Home Signal: In this case, the Station Master of the receiving station will
admit the train by taking ‘OFF’ calling-on signal or by issuing written authority
when Calling-on signal is also defective.
(c) Failure of Modified Semi-Automatic Signal in mid-section:
Signature of contractor Page 103 of 104 Dy CSTE/Proj/IRPMU/CNB