PPP - FC20

Which of the following principles are not coherent with Clarence Perry theory of neighborhood unit developed in 1920s ?  

1. The population of a residential neighborhood should be no greater than can be accommodated by one elementary school.
2. Each neighborhood should have an integrated network of small parks and playgrounds planned for its needs.
3. Arterial streets designed to carry all thought traffic should form the boundaries of each neighborhood. No major traffic arterials shall pass thought neighborhoods.
4. Interior streets patterns should use cul-de-sacs, curvilinear layouts and low volume roadways to limit the traffic and preserve a quite, safe, residential atmosphere.
5. There shall be no local shopping areas. Shopping shall not be sized to serve neighborhood population and shall be sited along main highways between neighborhoods that serve the whole city.