Prohibit on-street parking on at least one side of the road, make the side walk on that side big enough that an ambulance can use it to pass other vehicles if t

Prohibit on-street parking on at least one side of the road, make the side walk on that side big enough that an ambulance can use it to pass other vehicles if the road is blocked (I'll skip the question of why the street is blocked in the first place). Actually enforce the parking restriction. You need space for pedestrians anyways, and with traffic restricted to the necessary minimum you don't need bollards everywhere This isn't some kind of rocket science that has never been tried before, it's the reality in many cities around the world. You need an entire concept instead of adding half-backed solutions to an existing system, but the solutions are all well-tried and for the most part very straight forward.