narcotics other than alcoholic drinks for example., marijuana and heroine) are involved in about eighteen percent of vehicle crashes. Other harmful narcotics are usually used in combination with alcohol. 2/3 of young passengers ages fourteen and younger who died in crashes from intoxicated drivers during the years ninteen ninety-seven to two thousand two were riding with the intoxicated driver; only 32% of them were wearing their seatbelt as the crash happened.