A fatal crash involving at least four vehicles is slowing drivers along eastbound Interstate 20 near Duncanville Wednesday afternoon. According to the Dallas County Sheriff’s Department, the crash took place near Cedar Ridge Drive, just east of Spur 408. From Texas Sky Ranger it appeared that the crash involved a FedEx truck pulling a doubler-trailer, a flatbed car hauler and a sedan that were both rolled onto their sides, and a pickup truck.