I do a fair amount of work on streetlighting faults which are certainly a challenge sometimes.
There is not much logic in the way the circuits are run and a lot of damage is usually done by roadworks which mostly damage the streetlight circuits.
Also overloading is an issue and not always enough contactors are fitted in the streetlight strings running via the pilot system from the substations to serve the various roads in a certain area.
Biggest culprits are the new subdivisions.
Can't comment on the traffic lights. but a POCO job is not too bad at all.
