You can work out what the speed limit is based on the road you're on... Which you probably learned on your speed awareness course.
- if it's a single carriageway and there are no speed limit signs, but there are street lights, it's 30 mph
- if it's a single carriageway and there are no speed limit signs, but there are no street lights, it's 60 mph
- if it's a dual-carriageway and there are no speed limit signs, it's 70 mph
- if the speed limit is anything different from above, it's a legal requirement to have speed limit signs posted at specified intervals along the road (i.e. 20, 40, 50 mph).
So if you can't see a speed limit sign anywhere, you use the type of road you're on to work out if it's 30, 60 or 70 mph.
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