Around 4:10 a.m. CHP and Anaheim Fire received calls of a traffic accident on the Westbound 91 Freeway just West of the 57 Freeway. Units arrived on scene to a smaller vehicle in the middle of the freeway smashed and a semi truck with front end damage. The driver of the small vehicle was struck by the semi truck and was found underneath it. He was transported in grave condition to a local trauma center. The Westbound 91 Freeway is shut down and motorists are being directed on the 57 Freeway.