The provisions of §§ 46.2-1126 and 46.2-1127 shall not apply to a covered heavy duty tow and recovery vehicle when operating on an interstate highway. This section shall not permit the violation of any lawfully established load limit on any bridge. Covered heavy duty tow and recovery vehicles shall have reasonable access to terminals and facilities for food, fuel, repairs, and rest as designated by the Commissioner of Highways. For purposes of this section, “covered heavy duty tow and recovery vehicle” means a vehicle that is transporting a disabled vehicle from the place where the vehicle became disabled to the nearest appropriate repair facility and has a gross vehicle weight that is equal to or exceeds the gross vehicle weight of the disabled vehicle being transported.