You want insignificant? Starting in 2013/2014 car model years, all new cars must have a rearview camera system. This camera system will help prevent injury or deaths of 18,300 people nationwide (USA, and the death number is only 300). All because a congressman didn't lock a door or his wife take their granddaughter upstairs with them....
That is 0.00000522857143 of the population. 3 school bus wrecks isn't anything, but it will get eyes and ears for the local news (it is children...), which means more eyeballs on the screen increasing their ratings, which means they can increase ad rates....