IIRC there is a whole industry that builds them custom, often out of fiberglass

Palo Alto has finally started to crack down on this nonsense. It’s been a wealthy area for decades, but the behavior of these ultra rich freaks is hard for anyone to tolerate.

Unlike Coca-cola, these traffickers reuse their containers

I wonder if normally, such a light outage would trigger a remote operator to intervene and drive the car through the intersection, but the sheer number of disrupted lights, combined with the spotty connection due to parts of cell network going down caused the remote operator system to not be able to keep up across the city.