Janette Sadik-Khan is one of the world’s foremost authorities on transportation and urban transformation. She served as New York City’s transportation commissioner from 2007 to 2013 under Mayor Michael Bloomberg, overseeing historic changes to the city’s streets—closing Broadway to cars in Times Square, building nearly 400 miles of bike lanes and seven rapid bus lines, launching the largest bike share program in North America and creating more than 60 plazas citywide. A founding principal with Bloomberg Associates, she works with mayors around the world to reimagine and redesign their cities. She chairs the National Association of Transportation Officials and the Global Designing Cities Initiative, implementing new, people-focused street design standards that have been adopted by nearly 150 cities and organizations around the world. She is the author of Streetfight: Handbook for an Urban Revolution.