Earlier quoted context omitted.
> Vancouver took their 2-lane each way (4 total) roads and dedicated the outer lane to bikes. They protected that lane from car with planters. So, it can definitely be done. Makes snowplowing a mess. NYC can’t just shutdown like Vancouver does every time it snows :)
It is street parking that ruins winter for bikes. The snow plows can't get to the edge of the road, so the bike lane which marks the parking/plowable road area suffers. I don't think it's a big deal because we don't really get a lot of snow in NYC. A plan to improve the 50 weeks a year without snow on the ground is better than not doing the plan because a couple weeks in February will be miserable.
http://www.copenhagenize.com/2010/12/ultimate-bike-lane-snow...