> cities can presumably limit parking, make it very expensive, perhaps implement congestion charges These are three very difficult to implement changes (due to

> cities can presumably limit parking, make it very expensive, perhaps implement congestion charges These are three very difficult to implement changes (due to complaints), and also very ineffective at increasing safety (fewer vehicles = more speeding = no improvement in accident rates). > have lots of levers to keep cars out It's not about keeping cars out, it's making them behave safely. You can put a 20mph limit at an elementary school, but if your lanes are limited to 11 foot width, you'll still have cars driving 40, you still have long crossing distances, you still have all these factors reducing safety. If your corner radius has to be designed for a transport truck turning at 15 mph, you'll have cars turning at 40, failing to yield at crosswalks, etc. > without not complying with design standards. It's not about "not complying with design standards" - it's about the standards being too car-focused and having unintended consequences for others.