Slowing traffic down is the least desired solution because we'd have to remake all of those other things too to get the benefits. It doesn't lead to less suburb

Slowing traffic down is the least desired solution because we'd have to remake all of those other things too to get the benefits. It doesn't lead to less suburbanization until people get fed up of wasting time and give up the home they actually wanted. You could solve people getting run over on the subway tracks by slowing those down too, but criminalization and station design is just a much better approach. Slowing down is inefficient and may cost just as many lifetimes, only in little pieces every day.