Crews responded to assist Salisbury Fire on a reported vehicle fire. Salisbury Rescue 1 arrived on the scene and confirmed a working fire from a tractor trailer. Rescue 1 pulled an 1 3/4" line for fire attack. Engine 643 arrived on the scene and shut down the off ramp and provided a water supply. Once water supply was established 643 personnel assisted with fire attack. A quick knock down was made and units later cleared the scene.