ARW wrote
Graham. wrote
Chris wrote

On a recent trip back to the UK I noticed - whilst travelling mostly by
rail - that at the landings of flights of steps at very many stations now
there are overhead panels of super-bright blue LEDs tilted downwards
towards passengers approaching the stairs. These panels are *extremely*
bright and quite painful to look directly at, even in daylight. They
appear to be left on day and night.

Does any knowledgeable person know what function they're supposed to
perform?

To discourage intravenous drug use.

Discourage or displace?

They arent doing IV injections on the stairs there even without those lights
there.