New York City has never been like other cities when it comes to bike riding (or, for that matter, anything else). But now, with the long-anticipated CitiBike bikeshare program up and running, the mean streets of Manhattan — and Brooklyn — are being inundated with new riders. So whether you're a long-time cyclist or a first-timer, it's a good idea to brush up on the unwritten rules of the road. So, we wrote some of them down. Here's How To Ride A Bike In NYC Without Being A Douchebag (Or Getting Yourself Killed). Good luck out there.