Chances are that unless you've ever ridden a bike in a traffic-congested city like New York, you probably don't even know what "dooring" is. For anyone who has ridden in NYC traffic, however, the threat of ramming into a door swung open into a bike lane is all too real and could easily be avoided by a little bit of awareness. The NYC DOT seems to understand this, and has released an anti-dooring campaign called LOOK! For Cyclists, with 26,000 posters on the rear passenger windows of NYC taxi cabs and a short video showing passengers a few tips for exiting cars that might save some cyclists lives, check it out below:

[via Velojoy]