SNCF-type railway signalling
Complements for signals


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1. Identification plates

Luminous signals have a location plate, with a number. If the driver is stopped in front of a carré or a carré violet, and if he must require by himself the opening from the pointsman, he must specify this number. A telephone is set near to the signal. There is also a plate of identification, which normally specifies the most restrictive indication of the signal.

Carré or carré violet
Sémaphore, BAL
Sémaphore, BAPR
Sémaphore, BM
Carré; the corresponding sémaphore directs towards a BAPR.
Carré; the corresponding sémaphore directs towards a BM.
Avertissement
Disque
Guidon d'arrêt


2. Location plates

Signal set at kilometer x of the line.
This plate is also used with TIVs, guidons d'arrêts, etc.
Carréy of the shunting zone.
Carré violetz of the shunting zone.


3. Telephone call signs

Departure request

This plate is concerns the carré's whose opening can be done only after calling the pointsman.



Phone call plates

If the driver is stopped at a carré and its opening is not done immediately, he must call the pointsman to ask for opening.

1) If the bluish white light blinks, the driver must answer the call of the pointsman by the associated telephone.



2) in front of this sign, the driver can wait 5 minutes before asking for signal opening, except if the light blinks.



3) in front of this sign, the driver should normally not ask for signal opening, except if the light blinks.



If the telephone is installed on the right, it is specified by this plate.




4. Departure signals

Carrés which automatically give departure authorization when opened have a green-white plate on their mast.

This luminous panel is generally placed above the corresponding carré.
When blinking, it has the same value as the green-white plate.

Starting signal given manually:
Visual signal by daytime:
Visual signal by nighttime:
Acoustic signal:
_


5. Clearing light

Luminous panels of the carrés have a small white light which
is on when the signal shows an aspect different of the closed carré or manœuvre.

The clearing light is used to avoid any confusion between the carré and sémaphore aspects if one of the red lights has blown.

Example:
Closed carré:
Clearing light off.
Opened carré, closed sémaphore:
Clearing light on.


6. Track selection for a signal:

1) signalling elements are normally placed on the left.
In the case of a signal exceptionally set on the right because of a lack of space:
- a white arrow is added to the mast of the signal, directed towards the interested way;
- a warning plate is set ca. 200 metres before the signal ( ).
   ----------------------->   

2) In some cases, a signal can concern two tracks. Especially by block sémaphores on single tracks.
The priority-holder track is the left-hand one.
- in the case of a sémaphore, proceeding on the other track is only possible after a handheld stop was installed on the priority-holder track.




The arrows are also used with signs.
For example: this sign tells drivers that the way on its left and the way on its right are parking tracks.




7. Signal cancellation

A signalling element which should not be taken into consideration
is covered by a white cross.




Temporary deactivation:
(on the Suburban Railways of Paris (RER))



By some junctions, because of the different possible directions, the use of some signals is not necessary.
A luminous panel showing a white cross indicates that the signal is temporarily deactivated.



Contents:

Introduction
Signals
> Complements for signals
Particular direction indications
Speed signs
Counter-track signs
Level crossing signs
Electric traction signs
Station signs
Other indications
Stop signals
Signals for shunting
Signals for high-speed trains
Speed control and warning systems

Back : signalling

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