Quote:
Originally Posted by JockoT
temporary lights at roadworks usually have camera on top, so they can see vehicles approaching and change appropriately.
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We used to have some at a quarry that I worked at, we discovered that those were IR cameras and that you could encourage them to change by flashing your full beams.
I tried it out on the roads and got mixed results, so it might depend on how they are positioned or it only works on a few particular cameras.