Well, they could run less voltage through the circuits, which would dim the lights and save some energy.
So yes, if they had the circuitry in place to control this stuff they could.
Whether they are, I'm not sure. But in idle conversation it's come up a few times this year, and with money being so tight for local authorities (who light up everything except the trunk and major roads which is controlled by central government) it's not a stretch to imagine that they would.
They seem to be turning them on/off with aggressive savings in mind, perhaps now that they've realised the maximum potential of those savings they are actually dimming slightly too to make additional savings.
It's speculation of course, I don't know for sure.
Well, they could run less voltage through the circuits, which would dim the lights and save some energy.
So yes, if they had the circuitry in place to control this stuff they could.
Whether they are, I'm not sure. But in idle conversation it's come up a few times this year, and with money being so tight for local authorities (who light up everything except the trunk and major roads which is controlled by central government) it's not a stretch to imagine that they would.
They seem to be turning them on/off with aggressive savings in mind, perhaps now that they've realised the maximum potential of those savings they are actually dimming slightly too to make additional savings.
It's speculation of course, I don't know for sure.