When people think of a new transit need, they often jump prematurely to the idea that they need a new route. This new article of mine -- linked to in Chapter 7 of my book -- explains why this can be a bad idea.
Robert Cervero: The Transit Metropolis: A Global Inquiry
A rigorous but readable study of the transit choices made by a range of cities around the world, and how these choices have shaped the city for better or worse.
David Sucher: City Comforts: How to Build an Urban Village, Revised Edition
Engaging book on the details of creating welcoming urban space.
Allan B. Jacobs: Great Streets
The definitive book on the ingredients of a great urban streetscape.