Rule 31-1-10.8 - When to use Registered Gross Weight1.Miss. Code Ann. § 63-1-75, Subsection (o), defines gross vehicle weight rating as meaning the value specified by the manufacturer as the maximum loaded weight of a single or a combination (articulated) vehicle, or registered gross weight, whichever is greater. The gross vehicle weight rating of a combination (articulated) vehicle (commonly referred to as the "gross combination weight rating") is the gross vehicle weight rating of the power unit plus the gross vehicle weight rating of the towed unit or units.2. The registered gross weight rating referred to in this section will be used only when the value specified by the manufacturer as a maximum loaded weight of a single or combination (articulated) vehicle cannot be determined.Miss. Code Ann. §§ 45-1-3 and 63-1-201