The City of NY hosts a website that contains the entire administrative code that governs the city. If you ever have a need to board a pedicab and want to know where it is legal to do so, the administrative code is the place to go.
The relevant link for blocking a private driveway of a single or 2 family dwelling is here http://72.0.151.116/nyc/AdCode/Title19C1_19-169.asp?zoom_highlight=blocking+a+driveway