One of the most important factors that affect a person's risk of injury in a motor vehicle crash is the age of the person. This book investigates patterns of injury severity, location of injuries, and contact sources for the driver injuries by driver age. Also discussed in this compilation is how age-related declines in vision, cognition, and physical ability affect how older road users drive and use various other modes of transportation. Also, effective response to traffic incidents can enhance safety and mobility for both road users and responders.