P.B.L. were a manufacturer of copper armatures and street lighting established in Paris in the 1920s.
In the early 1930s, PBL entered into a partnership with the public lighting manufacturer Holophane. During the same period, the city of Paris began to equip the intersections of the main boulevards with traffic lights in order to regulate road traffic in the capital.
PBL then designs several models of electrical light signals used to signal prohibited directions or near schools, as well as luminous bollards.
In 1936, the PBL establishments were bought by Holophane, and it would seem that the manufacture of light signals ended from this takeover.
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