`` Black ice was involved '' in Oregon crash that killed 39 , hurt 9 , attorney says . Haeng Kyu Hwang had had 7 Â½ hours of sleep the night before the crash , suggesting that fatigue was not a factor , and said there is `` no indication '' that drugs and alcohol were involved . Driver had 7 1/2 hours of sleep 7 1/2 hours before , attorney says . Korean bus company had record of violations in Oregon before fatal wreck .
`` Black ice was involved '' in Oregon crash that killed 39 , hurt 9 , attorney says . Driver had 7 1/2 hours of sleep 7 1/2 hours before , attorney says . Korean bus company had record of violations in Oregon before fatal wreck .