The primary railway light signals in France are based on six standardized signal head shapes (châssis-écrans), each with two or more lights capable of displaying different states (aspects). These signal heads and their variations are shown below. Unused light positions are covered, and parasols are not installed.
Signal heads
Type "A"
| Description
|
2 or 3 lights
|
| Dimensions
|
1060 x 600 mm
|
Type "C"
| Description
|
Up to 5 lights
|
| Dimensions
|
1500 x 600 mm
|
Type "F"
| Description
|
Up to 7 lights
|
| Dimensions
|
1720 x 1200 mm
|
Type "H"
| Description
|
Up to 9 lights
|
| Dimensions
|
2020 x 1200 mm
|
Type "K"
This two-light signal may be installed in either a vertical or horizontal configuration, on a mast or at ground level.
| Description
|
2 lights
|
| Dimensions
|
665 x 460 mm
|
Type "R"
- The shape tag is not used, as distant signals are always presented on R-type heads.
| Description
|
Up to 6 lights
|
| Dimensions
|
1270 x 1220 mm
|
Type "ID2-ID3"
2 or 3-direction indicator.
- The shape tag is not used, as the shape is implicit from the signal type and the number of states.
| Description
|
2 or 3 lights
|
| Dimensions
|
600 x 1300 mm
|
Sources
Images des feux de circulation ferroviaire en France
Châssis écrans (Signalisation ferroviaire passive)
