Janette Sadik-Khan is on a mission to tame New York's mean streets. As transportation commissioner for New York City, she's closed off half of Times Square to traffic and converted 260 miles of city streets into bike lanes. Her goal is to reduce the city's carbon footprint and manage New York's notorious traffic, while possibly creating a blueprint for other cities around the world. However, her strategy is not without controversy in a city of more than eight million residents. Rock Center’s Harry Smith reports Monday, December 5, at 10pm/9c.