Excellent overview of the current state of bicycling and walking initiatives in 50 largest US cities.  Promotes data collection and availability, measures progress and evaluates results, supports efforts to increase bicycling and walking, and makes the connection to health. Outcome benchmarks include mode share, safety, and public health. Policy section reports on city and state policies affecting bicycling and walking, levels of federal funding, and two of the “5E’s” of public health — education and encouragement initiatives.