On Jan 7, 8:03*am, " wrote:
lights deter drug sales, vandalism, grafitti artists and help
percieved safety.


Four statements in that sentence. The first three are unsupportable
mythology, the last, "perceived" safety, is certainly correct.
Fighting crime through lighting is one of those "commonly accepted as
true" ideas that the data doesn't support.

Yes, in Europe most communities switch off some though not all lights
during times of low traffic flow when they aren't useful. That
includes overhead street lighting as well as traffic signals. But in
the parts of Europe where I lived, people went to bed early too, so it
might not work as well in the US.