No official Railway Board PDF has been traced for this entry yet. The text below was read from the document held in the library.
| Type | Commercial Circular |
|---|---|
| Topic | reservation |
| Currency | Currency not verified |
CALLING ON SIGNAL MAY BE PROVIDED BELOW A STOP SIGNAL EXCEPT …… UNDER APPROVED SPECIAL INSTRUCTIONS
<!-- Slide number: 1 -->
# CONDITIONS FOR TAKING OFF SIGNALS
<!-- Slide number: 2 -->
HOME SIGNAL
<!-- Slide number: 3 -->
Home Signal can be taken ‘off’ only after ensuring the following:
1. Line of Reception is free from obstruction
On Double lines, up to an Adequate Distance from Starter;
On Single line, up to an Adequate Distance from OMTP.
<!-- Slide number: 4 -->
Points in the Route are correctly set and locked.
LC Gates, if any, are closed against the Road Traffic.
Conflicting Signals kept at „on‟.
5. Conflicting Movements stopped.
<!-- Slide number: 5 -->
Adequate Distance / Signal Over Lap (SOL)
It shall be NLT 120 M in Multiple Aspect Signaling.
It may be reduced under Approved Special Instructions.
It shall be mentioned in Station Working Rules.
<!-- Slide number: 6 -->
Substitute for SOL:
Sand Hump of Approved Design.
Snag Dead End.
Derailing Switch.
Over Run line.
<!-- Slide number: 7 -->
If Train has been stopped at Home Signal:
Line of Reception shall be clear
In case of Double lines-up to Starter;
In case of Single lines-up to OMTP (or)
Up to Berthing Place (under Approved Special Instructions)
<!-- Slide number: 8 -->
CALLING ON SIGNAL
<!-- Slide number: 9 -->
Calling-on Signal can be taken ‘off’ for a Train only after the Train has come to a stand at the Stop Signal below which Calling-on Signal is provided.
Points shall be correctly set & locked. Clamping & Padlocking is required only when the
Points in Route are disconnected by issuing of S&T (T/351).
LC Gates, if any, are closed against the Road Traffic.
<!-- Slide number: 10 -->
# L.S.S/ I.B.S.S
Line Clear should have been obtained from Block Station in advance.
<!-- Slide number: 11 -->
# G.S.S
GSS can be taken ‘off’ only if
LC is free from obstruction and
Gates of such LC are closed against the Road Traffic.
<!-- Slide number: 12 -->
NORMAL ASPECT OF SIGNALS
Except under Approved Special Instructions, Fixed Signals shall always show their most restrictive aspect in their normal position.
Normal Aspect of an Automatic Stop Signal is ‘Proceed’. However, if next Signal is a Manual Stop Signal, Normal Aspect may be ‘Caution’ or ‘Attention’.
LP must stop his Train at Stations where booked to stop irrespective of the Indication of the Signal immediately in advance.
<!-- Slide number: 13 -->
# TRACT CIRCUITS IN YARD
Track circuits are provided to detect the presence of vehicles over that portion.
Rail is also forming the part of track circuit.
If Girder bridge is available in the yard, instead of TC, axle counter will be provided.
For track circuits in the yard, track indicator will be provided in the panel.
<!-- Slide number: 14 -->
# Responsibility of SM in respect to TC
The conditions for taking off signals like FSS & Starter is to verify the line of reception & dispatch respectively are clear and free from obstructions.
It is done by observing the track indicator in the panel.
<!-- Slide number: 15 -->
# SM’s Responsibility
If a track circuit is showing occupation without the presence of vehicles, then it may be due to obstruction like Weld Failure / Rail Cut / Rail Fracture.
SM to ensure the clearance of the track physically, where it is showing occupation.
If no obstruction found then the trains may be dealt on that portion of the track.
<!-- Slide number: 16 -->
# Various Track Circuits in Yard
Calling On track
First Vehicle Track ( F V T )
Last vehicle track ( L V T )
Point Track
Berthing track ( B T )
<!-- Slide number: 17 -->
| NameoftheTrack Circuits | | |
| --- | --- | --- |
| No. | For Down Train | ForUpTrain |
| T1 | Down Calling-on Track Circuit | -- |
| T2 | FVTCircuit | -- |
| T3 | LVT Circuit | Over lapTrack Circuit |
| T4 | Point Track Circuit(Facing end) | Point Track Circuit (Trailing end) |
| T5 | BerthingTrackCircuit–PF1 | BerthingTrackCircuit–PF1 |
| T6 | BerthingTrackCircuit–PF2 | BerthingTrackCircuit–PF2 |
| T7 | Point Track Circuit (Trailing end) | Point Track Circuit (Facing end)
Extract shown above; the full text is available in the search app.
Open this circular in the search app · Search all 4,233 documents