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Janette Sadik-Khan was Mayor Michael Bloomberg’s transportation commissioner from 2007 to 2013. Under her watch, she led a very public battle to add 400 miles of bike lanes and establish more than 60 pedestrian plazas in the city, most notably -- and controversially -- closing five blocks of Broadway to cars in Times Square.

She tells her story in the new book Streetfight: Handbook for an Urban Revolution. In a blurb on the back cover, Bloomberg refers to her as "the child that Robert Moses and Jane Jacobs never had." Sadik-Khan discusses lessons learned from the epic opponents.