A more detailed photo below of the complementary set 41, together with its representation in the 1954 French catalogue. These road signs comply with  Job nr. 7690 International Road Signs (Level Crossing, School, X-Roads without Priority … with Priority, S-Bend, X-Roads), the drawing completed in Liverpool on 23 January 1953. The specification is:

-Passage à niveau gardé (Level Crossing Gates).

-Danger (supersignalisation). Croisement très dangereux à aborder avec précautions (Cross Roads Danger).

-Virage dangereux (Dangerous Bend).

-Croisement d’une route secondaire (sur laquelle est placé ce signal) avec une route à grande circulation (Major Road Ahead).

-Croisement d’une route à grande circulation (sur laquelle est placé ce signal) avec une route secon-daire (Secondary Road Ahead).

-Attention école (School).  

The heights are various, ranging from 37 to 52 mm. This second set with six triangular warning Road Signs (Route), with their red printed box, lasted one year longer than the previous one, until 1969. Remaining info to be found in the 40 thread. Kind regards, Jan