With an aggressive, cut-through-bureaucracy style of a Robert Moses and the values of a Jane Jacobs, Janette Sadik-Khan changed the streetscape of New York City when she served as Mayor Bloomberg's Commissioner of the Department of Transportation from 2007 to 2013. During her tenure, she built one of the largest bike share programs in the country, created a network of 400 miles of dedicated bike lanes and over 50 pedestrian plazas. In her book, Streetfight: Handbook for an Urban Revolution, she lets us in on a little secret. These major street changes don't have to be expensive. All you need is some paint and planters to make major changes in how our city streets are used.