Abstract: A folding platform assembly for the top deck of motor vehicle carrier trucks. The platform features a grate, whereupon a person may safely and comfortably walk along the length of the truck. The platform also features a safety net system affixed to the grate to catch a person in the event of a slip, trip, or fall from the grate. The grate has an access panel for easy ingress and egress to the platform from a ladder or set of steps. When storing or transporting the platform, a folding mechanism pushes the platform into its closed, substantially-vertical position. This same mechanism pulls the platform into its open position when it is ready for use.