Subsidiary And Other Signals, Indicators And Markers

Subsidiary and Other Signals, Indicators and Markers

SIGNALS VISUAL

Movable Flag Signal

AUDIBLE

Flare Signal

Fixed Signal

Running

Two Aspect (TAS)

Semaphore LQ

CLS

Detonators

Voice

Whistle

Subsidiary Multiple Aspect (MAS)

Semaphore UQ

CLS

Miniature Arm Type

Disc Type

Position Light Type

CLS Type

Subsidiary Signals • Signals which control movement of trains within the Station Section are:– Shunt signals – Calling-on Signals

And are called Subsidiary Signals

Special features of Subsidiary signals • Unlike running signals, they may authorize movement on to occupied lines. • These signals authorize movement at slow speeds only. • Movement is within the station area. • Visibility of signals is not critical. • Pre-warning is not required.

Shunt Signals (GR 3.14) • Used for shunting within the station yard • Movement is authorized at such slow speed as to be able to stop short of any obstruction – GR 5.13 (3) : The speed during shunting operations shall not exceed 15 kmph unless otherwise authorised by special instructions

• Can be on a post by itself or below a stop signal (except the First Stop Signal) • More than one shunt signal may be placed on the same post • When taken off, it authorizes the driver to draw ahead even though the Stop signal above it may be On

Shunt Signals (contd.) • Types – Disc Type – Position Light Type – Miniature Arm Type

• When placed below a stop signal, a shunt signal shows no light in the ON condition

Disc Type Shunt Signal In Two Aspect signalling areas

Disc Type Shunt Signal In Multiple Aspect signalling areas

Position Light Type shunt signal

Miniature Arm Type shunt signal In Two Aspect signalling areas

Miniature Arm Type shunt signal In MAUQ signalling areas

Calling On signals • Have no independent existence • Provided below Stop Signal governing approach of train • Can be Semaphore or CLS

Calling On signals

Calling On signals

No Light ‘C’ Marker

C Driver to obey Main Signal

C Driver to obey Calling On Signal

Other Misc Signals • Co-acting Signals • Repeating Signals

Repeating Signals- Semaphore Arm Type

R

R

Repeating Signals- Banner Type

R

R

Repeating Signals- CLS Type

R

R