St. Patrick's Day brings to mind shamrocks, leprechauns, pots of gold, and good luck. But no amount of luck can save you from a drunk-driving crash. Unfortunately, March 17 has become a deadly day in the United States, with a dramatic spike in drunk-driving fatalities. According to the National Highway Traffic Safety Administration, (NHTSA) during the St. Patrick’s Day weekend in 2013 (6 p.m., March 16 to 5:59 a.m., March 18), more than a third (40%) of all crash fatalities involved drunk drivers.