Strongtowns I think was my first introduction to it. Here's a good recent article on it http://www.strongtowns.org/journal/2016/5/22/engineers-should-not-desig

Strongtowns I think was my first introduction to it. Here's a good recent article on it http://www.strongtowns.org/journal/2016/5/22/engineers-should-not-design-streets http://www.strongtowns.org/journal/2016/5/22/engineers-shoul... Note his definitions are a little different than what I used, but have roughly the same point