By trial, error, word of mouth and/or logging a bunch of miles we all figure out what roads not to take because it seems to have a bunch of crazy drivers. Some roads are just inherently dangerous for biking for one reason or another and seem almost a magnet for bike crashes. Thanks to this site cyclists can now find out what roads to avoid with maps of bicycle crashes in all the major cities. It’s pretty cool and worth checking out before you get on two wheels in these major cities. Be safe out there!