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Signalling complements
1. Identification
plates
 |
Normal
protection signal. |
 |
Automatic Block spacing signal. |
 |
Block or spacing signal of Non-Permissive
Automatic Block. |
 |
Manual Block signal. |
 |
Protection
signal; can show a NPAB
spacing
'stop' aspect. |
 |
Protection signal; can show a MB 'stop' aspect. |
 |
Announcer
signal. |
 |
Approach signal. |
 |
Basic
protection signal. |
2. Marker plates
 |
Kilometrage. |
 |
Identification number. |
 |
Identification number for protection signal (carré). |
 |
Identification number for protection signal (carré violet). |
3. Acknowledgement and departure request
 |
Telephone set on the right side of the track. |
|
|
If the
bluish-white light blinks, ask for acknowledgement from the
regulator. |
|
|
If the
bluish-white light blinks, ask for acknowledgement from the
regulator. |
|
|
This plate is associated with protection signals which usually don't need acknowledgement, except if the bluish-white light blinks. |
 |
This
plate is associated with protection signals which always need
acknowledgement for clearing. |
4. Overlap light
The overlap light was invented to avoid confusion between absolute stop and block stop if one of the two red lights burns out.
Example:
| Absolute
Stop Overlap light off. |
Block
Stop Overlap light on. |
 |
 |
5. Signal placement
1) Signals are normally placed on the left side of the track.
When a signal (or an indicator board) is placed on the right side:
– a white arrow is added to the mast and orientated to the concerned track;
– an distant board can be placed before the signal.
>>
200m >>
2) In some cases a signal can concern two tracks.
Especially for single track block signals and several protection signals.
The priority-holder track is the first one from the left.
6. Cancellation
A signal or an indicator board not to take into consideration bears a white cross.
Temporary deactivation
(suburban railways of Paris)
In some junctions, following the different possible directions, several signals may not be useful.
A luminous panel showing a white cross indicates that the concerned signal is temporarily off.
1) Signals are normally placed on the left side of the track.
When a signal (or an indicator board) is placed on the right side:
– a white arrow is added to the mast and orientated to the concerned track;
– an distant board can be placed before the signal.
>>
200m >>
2) In some cases a signal can concern two tracks.
Especially for single track block signals and several protection signals.
The priority-holder track is the first one from the left.
6. Cancellation
A signal or an indicator board not to take into consideration bears a white cross.
Temporary deactivation
(suburban railways of Paris)
In some junctions, following the different possible directions, several signals may not be useful.
A luminous panel showing a white cross indicates that the concerned signal is temporarily off.
|
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Last modifications: 19/03/2009.
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