On 2018-07-15 23:16, Paul Cummins wrote:
In article , (TMS320) wrote:

It depends on whether there are streetlights or not.

That may be the strict definition but in practice no streetlamps
and no signs in a built up area is an unlikely combination.
Besides, it is not possible to go wrong to assume a built up area
is 30mph until informed that you are allowed to go faster.

That depends on the country you are in.

See that newsgroup up there --^ It's a clue.