In this section the following words have the meanings indicated. “Automobiles” means all assembled motor vehicles: Capable of being operated on a highway; and Authorized under this article to be operated on a highway. “Backhaul” means the return trip of a vehicle transporting cargo or general freight, especially when carrying goods back over all or part of the same route. “Maxi–cube vehicle” means a nonarticulating straight truck: In combination with a semitrailer which does not exceed 34 feet, and is designed to be loaded and unloaded through the semitrailer; or In combination with a trailer that does not exceed 28 feet. “Saddle–mount and full–mount combinations” means a truck tractor or unloaded truck towing one or more other truck tractors or unloaded trucks in combination. “Stinger–steered automobile transporter” means a truck tractor and semitrailer combination: Designed for the transportation of automobiles or boats; and In which the fifth wheel is located on a drop frame behind and below the rear axle of the power unit. For purposes of this subtitle, the length of a vehicle or combination of vehicles: Includes its front and rear bumpers and any part of its load that extends beyond the vehicle or combination of vehicles; and Does not include: Nonload–bearing safety and energy conservation devices, such as marker lamps, steps and handholds for entry and egress, front–mounted refrigeration units, and front–mounted air compressors; or Nonproperty carrying devices or their components that do not extend more than 24 inches beyond the rear of the vehicle and are needed for loading or unloading cargo. The measurement of a combination of vehicles engaged in the transportation of automobiles or boats shall not include the overhang of the transported vehicles or boats or any retractable device on the rear of the combination when in use to support a transported vehicle. This section does not apply to any vehicle or combination of vehicles carrying: Piling, poles, or mill logs that do not exceed 75 feet in length; or Crew or racing shells. This section does not prohibit: The use of a combination of vehicles to carry an indivisible load if the load is not over 70 feet long; or A backhaul by an automobile transporter. Except as otherwise provided in this section: A bus, single unit truck, or Class M motor home may not be over 40 feet long; and A publicly owned rigid bus may not be over 41 feet long. This subsection does not apply to a publicly owned rigid bus. A bus or a Class M motor home may be over 40 feet long but may not be over 45 feet long: When operated on an interstate highway or any part of the State highway system designated by the Secretary in conjunction with the United States Department of Transportation; or When operated on a highway that is not specified in item (i) of this paragraph if the bus or motor home is using the highway to travel the shortest practical route between a highway specified in item (i) of this paragraph and: The point of origin or destination of the bus or motor home on a particular day; A bus terminal; or For a distance not to exceed 1 mile, facilities for food, fuel, repairs, or rest. Except as otherwise provided in this section, a publicly owned articulated three–axle bus may not be over 60 feet long. Any other vehicle may not exceed a length of 35 feet. When a semitrailer and a trailer (double) are being operated in combination with a truck tractor, the combination of vehicles shall not be subject to an overall length limitation. This combination may only be operated on any part of the interstate system or other State system highways that are designated by the Secretary in conjunction with the U.S. Department of Transportation, or on a highway that is the shortest practical route between a designated highway and a truck terminal, or point of origin/destination for cargo, or for a distance not to exceed 1 mile, facilities for food, fuel, repairs, or rest. A semitrailer or trailer being operated in this combination may not exceed 28 feet in length for each unit. When a semitrailer (single) is being operated in combination with a truck tractor, the combination of vehicles shall not be subject to an overall length limit, however, the semitrailer may not exceed 48 feet in length. Except as otherwise provided in this section, and subject to § 24–105 of this subtitle: In a combination of vehicles with a power unit that is a cargo–carrying vehicle, the overall length of the combination may not exceed 62 feet; Any other combination of vehicles may not exceed 55 feet; and A truck or truck tractor and semitrailer combination designed for and engaged in the transportation of automobiles or boats may not exceed 65 feet in length; A stinger–steered automobile transporter may not exceed 80 feet in length; A maxi–cube vehicle described in subsection (a)(4)(i) of this section may not exceed 65 feet in length; and A maxi–cube vehicle described in subsection (a)(4)(ii) of this section may not exceed 60 feet in length; and Saddle–mount and full–mount combinations may not exceed 97 feet in length; No other length requirements may be applied to the combinations of vehicles described in item (i) of this item; and The combinations of vehicles described in item (i) of this item may only be operated on any part of the interstate system or other State system highways that are designated by the Secretary in conjunction with the U.S. Department of Transportation, or on a highway that is the shortest practical route between a designated highway and: A truck terminal; A point of origin/destination for cargo; or For a distance not to exceed 1 mile, facilities for food, fuel, repairs, or rest. Notwithstanding the provisions of subsection (j) of this section, when a semitrailer is being operated in combination with a power unit that is equipped with a dromedary box being used to transport explosives and munitions classified under 49 C.F.R. Part 173.50 that are intended for use by the United States Department of Defense, the combination of vehicles is not subject to an overall length limit, but the semitrailer may not exceed 48 feet in length. Notwithstanding the provisions of subsection (h) of this section, nothing shall prevent the operation of a combination of vehicles in which the semitrailer (single) does not exceed 48 1/2 feet in length or a combination of vehicles in which the semitrailer or trailer (double) does not exceed 28 1/2 feet in length for each unit; provided, the combination has been lawfully operated on the highways of this State prior to December 1, 1982. Notwithstanding the provisions of subsection (j)(1) of this section, nothing shall prevent a power unit, which was equipped with a dromedary box, deck, or plate and was legally operated in Maryland prior to December 1, 1982, in combination with a semitrailer or trailer from exceeding the overall length limit of 55 feet. In this subsection, “vehicle” means: A semitrailer as defined in § 11–158 of this article; or A trailer as defined in § 11–169 of this article. Notwithstanding the overall length of the combination, a truck tractor may not be operated on a highway in the State in combination with more than 2 vehicles. Subject to paragraph (2) of this subsection, a combination of noncommercial vehicles consisting of a power unit and a travel trailer may not exceed 65 feet in length. The combination of vehicles exceeding 55 feet but authorized under this subsection may only be operated on: Any part of the interstate system or other State system highways that are designated by the Secretary in conjunction with the U.S. Department of Transportation; or A highway that is the shortest practical route between a designated highway and: A point of origin or destination on a particular day; or For a distance not to exceed 1 mile, facilities for food, fuel, repairs, or rest.