According to the BHSI, 540,000 bicyclists visit the ER with injuries every year. One in eight of these people suffer a brain injury. Most injuries and fatalities involve collisions with motor vehicles. As a result, it's a good idea to ride the road less traveled. Many motorists are unclear on the rules of the road when they involve cyclists. Ironically, between 45 to 88 percent of these injuries can be prevented with a helmet. Limit your rides to the early hours - research shows that riding in the late afternoon or early evening increases the risk of being injured, presumably because of visibility issues on the part of cyclists or motorists. Use your noggin and wear a helmet.