Not long ago in a side street in Norwich, there were roadworks and some temporary traffic lights. They were at green so we proceeded carefully. Then we noticed traffic was also coming towards us, until we all met in the middle at an impasse. My husband got out and looked at both sets of lights, and they were both permanently on green!

I then approached one of the workmen and politely explained there was an error, but the chap was furious for some odd reason. He ranted and raved at us as if we were idiots. I adopted my 'Teacher Basilisk Stare' and my best 'Stern Teacher Giving Detention Voice', and he consented to have a look.
It was fortunate that everyone had crossed the lights with care, or there might have been a collision. My husband directed the traffic and got people to reverse, while the rude twat sorted out the lights.
We later reckoned the chap had been embarrassed, and his aggression was defensive.
Normal for Norfolk!