What is wrong with the traffic lights in your city would be the much more interesting question here. Everywhere I know, traffic lights work as long as their power supply is intact
Shitty maintenance on top of lower bidder supplying sub-par equipment because half of the money went to corruption. The result is water getting in the circuits and shorting them out.
Alright. I work with roads and traffic infrastructure, and have never seen that situation before. The active equipment (in my experience) is all stored in above ground cabinets - just simple grey metal cabinets, elevated on foundations or poles, sealed with a gasket but with vent holes to prevent heat buildup. It would take almost deliberate misconstruction to cause a short.
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