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On the sign:
Fussgeher Achtung auf das Fuhrwerk ! SCHRITTFAHREN ! Schwerfuhrwerkskutscher haben die Pferde am Zügel zu führen oder eine erwachsene Begleitperson zur Warnung der Fussgänger voranzuschicken . KUNDMACHUNG vom 8. Mai 1912. Mag - Abt . I. Z. 2050/11
Translation of the text on the sign: Pedestrians Watch out for the wagon! STEP RIDING ! Heavy cart drivers must lead the horses by the bridle or send an adult attendant ahead to warn the pedestrians. ANNOUNCEMENT of May 8, 1912. Mag-Abt. I. Z. 2050/11