Drivers who get stoned on 4/20 are just as dangerous as drivers who get drunk on Super Bowl Sunday

The doctors compared those figures to the days one week before and one week after April 20, when marijuana use was presumably more typical but all other conditions were roughly the same. During the identical 7-hour-and-40-minute period on April 13ths and April 27ths, there were 2,453 drivers involved in fatal crashes.