I also disagree with many (and most freeway) speed limits, but I also disagree with car-centric urban design and the zoning that makes it the least-bad option.

I also disagree with many (and most freeway) speed limits, but I also disagree with car-centric urban design and the zoning that makes it the least-bad option. Pedestrians (read: people, including those under 16 and over driving age) shouldn't be forced to deal with adjacent traffic just to go about their daily lives. I mention this because I suspect the person-traffic interface is a major justification for speed limits in the first place.