Heavy Rain Leads to Multi-Vehicle Collision Behind Semi on Interstate Knoxville, Tennessee — Traffic camera footage captured a series of vehicles sliding into the rear of a semi-truck during a heavy rainstorm on a busy Tennessee interstate. The video shows steady rainfall and reduced visibility as water accumulates across multiple lanes. In the footage, the semi-truck slows as traffic compresses ahead. A sedan following behind brakes but appears to lose traction on the slick surface, sliding for