New York's streets? You just need to reimagine your streets

"The work of a transport commissioner isn't just about stop signs and traffic signals," explains Janette Sadik-Khan, who was appointed to that role in New York City in 2007. In this funny and thought-provoking talk, she details the thinking behind successful initiatives to reshape street life in the 5 boroughs, including the addition of pedestrian zones in Times Square and the arrival of Citi Bikes. Watch for the special cameo at the end of the talk.