Specifications include, but are not limited to: This specification describes a tandem axle, diesel powered cab, and chassis for use by TxDOT for mounting a 13 foot long, 10 cubic yard dump body. Completed units will be used in dump, trailer towing, material spreading, and snow plowing applications. Truck(s) furnished to this specification shall be legally and structurally capable of transporting the specified Gross vehicle weight rating (GVWR) and Gross combination weight rating (GCWR) requirements, on highway, at speeds up to 70 MPH and off highway under conditions imposing more severe frame stresses without experiencing failure or permanent sets in the truck frame or any component of the unit. All specified components shall be original equipment manufacturer (OEM) chassis-factory installed, when offered by the vehicle manufacturer. Aftermarket components require TxDOT’s approval.