The national speed limit for a car on a motorway is 70 mph, unless signs show a lower speed limit. This applies to cars and motorcycles, including on motorways with three or more lanes. Always look for signs showing a lower limit, particularly where variable or temporary speed limits are in operation.
Remember that 70 mph is the maximum speed limit, not a target. You should reduce your speed when conditions require it, such as in heavy traffic, poor visibility, rain, snow or ice. On motorways, travelling too fast for the conditions can significantly increase your stopping distance.
Quick Self-Test
You are driving a car on a motorway and no lower speed limit is displayed. What is the maximum speed limit?
A) 60 mph
B) 70 mph
C) 75 mph
D) 80 mph