peeding—exceeding a speed limit or driving too fast for road or traffic conditions—is one of the most common factors in motor vehicle crashes in the United States. From 2005 through 2014, there were 112,580 fatalities that resulted from crashes in which a vehicle’s speed was indicated to be a factor, representing 31 percent of all traffic fatalities. Based on National Highway Traffic Safety Administration (NHTSA) Fatality Analysis Reporting System (FARS) and National Automotive Sampling System (NASS) General Estimates System (GES) data, speed-related crashes resulted in 9,283 fatalities and injured an estimated 336,742 people in 2014.