Assume lamp posts mean 30 mph, until signs say otherwise – but remember it could be 20 mph

When driving on built-up roads, assume the limit is 30 mph until you see a sign saying otherwise. But, remember the limit could be lower – 20 mph.

The law does not allow highway authorities to put repeater speed limit signs on 30 mph roads that have street lights. This is because putting repeater signs on all such roads would require hundreds of thousands of extra signs.

Instead the Highway Code advises that street lights usually mean the limit is 30 mph unless there are signs showing otherwise.

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