Semi-Truck Jackknifes on Busy Utah Highway Salt Lake City, Utah — March 12, 2025 A terrifying scene unfolded on a major interstate yesterday when a semi-trailer truck lost control, jackknifing across multiple lanes and nearly colliding with several passenger vehicles. The incident, captured on a motorist's dashcam, shows the massive vehicle swerving violently as it travels at highway speeds, sending a cloud of dust and smoke into the air. As the truck begins to skid, the trailer swings around, e