– why do European trucks have multiple speed limit signs on the back of the trailer? For instance 70, 90, 100. How exactly does anyone checking it know which limit is applicable to what situation?

Question

– why do European trucks have multiple speed limit signs on the back of the trailer? For instance 70, 90, 100. How exactly does anyone checking it know which limit is applicable to what situation?

In: 2721

Answer 1

Italian example:
“Il primo segnale va posizionato nella parte posteriore sinistra del veicolo e rappresenta il limite massimo consentito nella strade extraurbane mentre il secondo,posizionato nella parte posteriore destra del veicolo,rappresenta il limite massimo consentito per quel veicolo in autostrada.”

So it’s only TWO signs: one (on the left) for the limit in rural areas (outside residential/urban areas) and the other one (on the right) is for the highway limit.

Truck driver sometimes add more if they are driving abroad, and honestly they simply don’t care much. Just throw a few more and nobody will complain.