PSTU
OVERVIEW
Saunier Duval catalog
1938
TRAFFIC LIGHT
H.MAILLET - Paris (75)
FLASHING SIGNAL
REPEATER
TRAFFIC LIGHT
Paris - 1991
Paris - 1991
Saunier Duval catalog
1938
Copy retained by the association MEGE
Saunier Duval catalog
1938
The three-unit signaling beacon (PSTU), was the most common type of traffic light designed by Saunier Duval Frisquet in Paris. It was laid from the 1930s, and examples were still in service until the early 1990s.
Its design consists of three copper modules assembled together and equipped with a colored fresnel lens, a protective globe, and a visor. The fixing of the signal on its pole is done laterally.
Each signal unit is double sided. The light sources are incandescent lamps placed in front of a parabolic mirror.
A contrast screen was added to certain signals from the 1950s to enhance their visibility.
A single-colour signal made up of a single unit has also been marketed (warning light or one-way traffic light).
A cast iron repeater was also marketed. It is equipped with pedestrian signals on its side face.
There is no longer any signal of this type in service in Paris. A single copy has been saved and restored by the MEGE association. It can be seen in Paris at the museum of the same name.
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