Nope, they get unbolted when we start having frosts and put back in the spring. They also replace them periodically when they get ripped off by the large trucks

Nope, they get unbolted when we start having frosts and put back in the spring. They also replace them periodically when they get ripped off by the large trucks and greyhound buses that don't fit between them perfectly... I really wish I could correlate traffic slowdown in a publishable way to provide for wrongful death suits of the ambulance occupants' families against the city, but I haven't figured out how to quantify it cheaply and publicly yet.