Unless signs show otherwise, what’s the national speed limit for a car or motorcycle on a motorway?

A: 50 mph

B: 60 mph

C: 70 mph

D: 80 mph

Hint

The national speed limit for a car or motorcycle on a motorway is 70 mph. Lower speed limits may be in force; for example, at roadworks. Variable speed limits also operate in some areas when the motorway is very busy. Cars or motorcycles towing trailers a

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