[UPDATED] (Alex Goldmark, Transportation Nation) The 2011 Sustainable Transport Award goes to Guangzhou, China in large part for a successful and highly popular bus rapid transit system that integrates with bike lanes, bike share and metro stations, "raising the bar for all cities" according to the Institute for Transportation Development Policy that gives the award every year.
Here's the ITDP write up on the city's BRT system, which carries 800,000 people each day.
Accepting the award, Lu Yuan, a Guangzhou government official said, "It is a big honor to win this award ... and in the future we will continue to grow green transportation" systems to create a "sustainable, low-carbon and happy Guangzhou."
The other cities in contention for the prize were: Tehran, Iran (which inadvertently caused a minor international incident); Leon, Guanajuato, Mexico; Lima, Peru; and Nantes, France. Previous winners include Ahmedebad, India; Bogota, Colombia; and New York City.