The national speed limit sign is a white circular sign with a black diagonal stripe. It means that the national speed limit applies to the road and your type of vehicle. It does not automatically mean 60 mph or 70 mph because the maximum speed depends on the type of road and the vehicle you are driving.
For a car, the national speed limit is generally 60 mph on a single carriageway and 70 mph on a dual carriageway or motorway. Remember, the speed limit is a maximum, not a target. You must still reduce your speed when road, traffic or weather conditions make it necessary.
Quick Self-Test
You see a national speed limit sign while driving a car on a single carriageway. What is the maximum speed limit?
A) 40 mph
B) 50 mph
C) 60 mph
D) 70 mph