This one. Convert all the subway rail for freight, no more freight on the street. I don’t think this will happen, just think it would be an interesting alternative to consider (I am not an engineer or city planner, just in case the Oregon State Board of Examiners for Engineering and Land Surveying is listening…)
The advanced stages of my re-imagined NYC also ban cars from the roads, and instead requires that any drivers park their cars in parking garages on the outskirts of the city (if you must) and then either take a bus, light rail, bike or get in your electric buggy that is governed at 25mph (the city speed limit) so no one takes up more than their share of road space/wear-and-tear, and to avoid a car-safety arms race.
