Street design is an important part of ensuring we have livable streets in San Francisco. The National Association of City Transportation Officials (which our own MTA head Ed Reiskin is the current President of) is an organization that brings together the transportation departments of cities all across the country to share ideas on transportation ideas and best practices. Their official guidelines put forward are the embodiment of progressive transportation policies. I've introduced legislation to adopt these guidelines here in San Francisco, which will serve to complement our Better Streets Plan.
Links: SF Streetsblog Article