Car accidents and slip and falls are both common causes of closed traumatic brain injuries. Among young adults, auto accidents (including car, truck, bicycle, motorcycle, bus, pedestrian, and boat accidents) are the number one cause of TBI among younger adults. Being struck by an object is a common cause of construction accident TBIs, while slip and falls can occur anywhere a dangerous condition exists on a property, whether private or public. In some cases, a work accident can lead to a traumatic brain injury.