– 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

In UK, different weight class have different limits, so for example on the motorway, the speed limit for a car is 70mph, but for a truck is 60mph (I think), by showing this at the back on the trailer, it’s tell the driver behind, that as a truck, I can only legally do 60mph, I CAN NOT go faster, so now the driver behind knows this, and can choose to overtake or whatever.