Drivers Abandon Cars to Warn Oncoming Traffic as Ice Turns Road Into Collision Zone Allegheny County, PA — A stretch of roadway became a scene of unfolding danger when hidden ice sent car after car sliding out of control, forcing stranded drivers to step into traffic in a desperate attempt to warn others before it was too late. The tense moments were captured on a roadside camera as chaos mounted with each passing second. The video opens on a two-lane road glazed with a nearly invisible layer of