Once Again The Tennessee Department Of Transportation Will Be Sending Several Lime-Yellow Special “Help” Trucks To The Tri Cites This Weekend. The Vehicles Will Be Assisting With The Heavy Traffic Anticipated In Conjunction With Nascar Events At Bristol Motor Speedway. The Help Trucks Are Four-Wheel Drive And Equipped With Push Bumpers, Top-Mounted Arrow Boards, Emergency Work Lights, Air Compressors, And Other Tools To Help Motorists. Operators Can Perform A Variety Of Functions From Clearing A Stalled Vehicle To Changing A Flat Tire.