In article , Arfa Daily
writes

I'm interested in any thoughts, facts, experience or observations that
anyone might have.

If you want to keep your options open for a complaint after the event
then it might be worthwhile borrowing a lux meter to measure current
illumination levels for comparison with those after the replacement. It
would let you counter any lies they tell about lighting levels and
evenness of illumination. Readings in middle of road, one in line with
the lamp and one equidistant between adjacent lamps?
--
fred
it's a ba-na-na . . . .