Every motorcyclist knows them: those traffic lights that remain red until a car or truck triggers a green phase. They have sensors embedded in the road surface – you can usually see them as circles or octagons covered in tar. The idea is that it’s pointless to turn a light green unless there is actually someone on the road to take advantage of that green.
Well, my sense is that those sensors are relatively old – I’d say from the 80s and maybe 90s.
Continue reading
