Semi-Truck Slides Off Snowy Mountain Road After Losing Traction High Mountain Pass — A harrowing winter crash was captured after a semi-truck lost control on an icy mountain roadway and slid off the edge, tearing through a guardrail before plunging downward. The video shows the tractor-trailer drifting toward the shoulder as packed snow and ice leave the driver with little ability to steer or brake. As the truck’s front wheels reach the edge, the guardrail buckles and snaps under the weight of t