Urban bike commuters might want to study this graphic. It’s taken from a recent paper published in the American Journal of Public Health and it shows injury risk based on the type of urban bike route taken by commuters. The further to the left a given route type sits, the higher the risk for injury. The higher up a route type sits, the more bicyclists favor it. It's probably not shocking that the highest risk of injury in the study was associated with bike routes on busy streets with parked cars and no bike lanes, but the Canadian scientists conducting the study were surprised by how much less risk they saw in protected bike lanes, which they call "cycle tracks."