Many of the bike lanes in NYC are nothing but a stripe of paint along the side of a single-lane road, whose curbs are lined with parked cars. Cars double-parking for loading, etc will inevitably either block the bike lane or block the auto lane, causing cars to swerve into the bike lane.
eg, https://www.google.com/maps/@40.7784195,-73.9470116,3a,75y,2...