. . "Officials blame black ice for an early-morning accident on U.S. 52 North that involved seven vehicles, including a fire truck and first responder???s vehicle.Just before 6:30 a.m., a 2006 Ford Ranger truck driven by Denise Vaughn of Dobson, age 26, hit a patch of black ice caused by snow melt in the curve on 52 North, just after 52 splits with I-74, according to Trooper James Selba with the North" . .