And replace with LED versions, parts of the town already has LED streetlight, and of course all the new signals are. I was intrigued why LEDs were not used when they were putting up the first canopys.
LED technology is improving rapidly and is now a realistic alternative to fluorescent or metal halide lamps. This is however a new development, many LED lighting installations of only a few years ago failed to meet expectations regarding light output and lifetime.
I suspect that when the plans for the Reading works were drawn up some years ago, that LED lighting was not considered to be sufficiently developed.
For at least 10 years LEDs have worth while for coloured lighting such a railway or road signals, tail lamps etc.
For a similar time LEDs have been worth it for numerous small light sources, such as torches, cycle lamps, Christmas decoration lights etc.
LEDs to illuminate large areas such as streets, railway platforms, or offices with white light at a competitive cost are very much more recent.
Special qaulity fluorescent lamps are available that should last about 10 years of continual operation, or 20 years of nightime only operation, or perhaps a century of domestic use. That is competitive with the claims made for LEDs.
Replacing conventional fluorescent or discharge lamps is a simple task easily done quickly by semi skilled labour.
Failed LEDs are likey to need an expensive specialist.