Most law enforcement officers have seen first-hand the devastating effects of fatal crashes on U.S. roadways, and the toll they take on victims, their families, and entire communities. Take, for example, the following incidents:

On July 21, 2014, a large truck entering a work zone on I-55 in Illinois triggered a chain reaction crash involving three stopped vehicles. Five people were killed, including an 11-year-old girl.

On December 16, 2013, New York State Trooper David Cunniff, 35, was killed while conducting a traffic stop of a speeding vehicle on the New York State Thruway in Mohawk Valley. Trooper Cunniff was parked on the shoulder when a tractor trailer hit his cruiser from behind.