![Dan Piatkowski.jpg Dan Piatkowski.jpg](https://progressive.org/downloads/20584/download/Dan%20Piatkowski.jpg?cb=6163c2e2069ac3d1c578468c3b4f7d77&w={width}&h={height})
Dan Piatkowski is an urban planner and bicycle expert from Phoenix, Arizona. Dan is the author of the book Bicycle City: Riding the Bike Boom to a Brighter Future.
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