Established by Local Law No. 27 of 1977. The mission of the New York City Department of Transportation (DOT) is to provide for the safe, efficient, environmentally responsible movement of people and goods in New York City. To fulfill this mission, DOT controls and regulates traffic; builds and maintains streets, sidewalks, highways, bridges and municipal parking facilities; maintains and operates the Staten Island Ferry; and acts as an advocate and a voice for better transportation.