Basil Jet wrote:
While driving past a bus stop in Ponders End at 4am, I saw the Countdown
display bearing three lines of glowing text firing countless quanta of
energy out into the human-free wilderness. Admittedly the bus stop in
question is served by night buses, but I would not be surprised if no-one
had waited for a bus there for the previous four hours. I have also seen
tram-stops in New Addington gushing forth photons to tell non-existent
night-tram passengers about the non-existent night trams.

Has anyone in TfL ever done an analysis of this waste of energy?

As they're LEDs, the power consumption of all the signs together is
probably less than one street lamp.