A single carriageway road has this sign. What’s the maximum permitted speed for a car towing a trailer?

A: 30 mph

B: 40 mph

C: 50 mph

D: 60 mph

Hint

When you’re towing a trailer, a reduced speed limit also applies on dual carriageways and motorways. These lower speed limits apply to vehicles pulling all sorts of trailers, including caravans and horse boxes.

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