This fact sheet uses 2013 data. The following definitions apply to terms used throughout this fact sheet: Motorcycles are defined as mopeds, two- or three-wheeled motorcycles, off-road motorcycles, scooters, mini bikes, and pocket bikes. The motorcycle rider is the person operating the motorcycle; the passenger is a person seated
on, but not operating, the motorcycle; the motorcyclist is a general term referring to either the rider or passenger. NHTSA publications prior to 2007 may not reflect this terminology.