They do enforce it. My office is on one of the major feeders to the Holland Tunnel (Broome/Watts Street), so it gets extremely congested everyday from 4 to 6. E

They do enforce it. My office is on one of the major feeders to the Holland Tunnel (Broome/Watts Street), so it gets extremely congested everyday from 4 to 6. Every light cycle, several cars block the box, and a small team of traffic cops sprints out from their hiding spot around the corner, ready to write tickets. I think it's just a matter of scaling that tactic out to other intersections where traffic comes to a complete stop for twenty seconds at a time, allowing cops to give and explain tickets in the intersection without disrupting the flow of traffic.