"A pedestrian, as defined for the purpose of this Traffic Safety Fact Sheet publication, is any person on foot, walking, running, jogging, hiking, sitting or lying down who is involved in a motor vehicle traffic crash. For the purpose of this Traffic Safety Fact Sheet a traffic crash is an incident that involves one or more vehicles where at least one vehicle is in-transport and the crash originates on a public traffic way. Crashes that occurred exclusively on private property, including parking lots and driveways, were excluded. In 2009, 4,092 pedestrians were killed and an estimated 59,000 were injured in traffic crashes in the United States. On average, a pedestrian was killed every two hours and injured every nine minutes in traffic crashes."
DOT HS 811 394; Department of Transportation Highway Safety 811 394
Transportation Research Board: http://www.trb.org/