Rear-end bicycle collisions occur when a motor vehicle strikes a cyclist from behind. These accidents are particularly devastating because cyclists have virtually no protection from the impact and often cannot see the approaching vehicle. According to the National Highway Traffic Safety Administration (NHTSA), rear-end collisions account for approximately 40% of all bicycle-vehicle crashes resulting in serious injury or death.
In California, these accidents most commonly occur on busy urban streets, rural highways with narrow shoulders, and roads without dedicated bike lanes. Factors that increase the risk include poor lighting conditions, high-speed traffic, distracted driving, and inadequate infrastructure for cyclists. Many rear-end bicycle accidents happen during commute hours when traffic is heavy and drivers are rushed or distracted.
The physics of a rear-end bicycle collision are brutal. A cyclist traveling at 15 mph who is struck by a vehicle traveling at 35 mph experiences a differential impact speed of 20 mph or more. This force is often sufficient to throw the rider over the handlebars, into the windshield, or onto the pavement with devastating consequences. Understanding the mechanics of these collisions is crucial for building a strong legal case and demonstrating the severity of the impact.