A. A vehicle, including any load on the vehicle, shall not exceed a length of forty feet extreme overall dimension, including front and rear bumpers. This subsection does not apply to any of the following:

1. 1. A semitrailer when used in combination with a truck or a truck tractor.
2. 2. A truck that is equipped with a conveyor bed, that is used solely as a fiber and forage module mover and that does not exceed forty-eight feet in length.
3. 3. An articulated bus or articulated trolley coach that does not exceed a length of sixty feet.
4. 4. A bus that is not articulated and that does not exceed a length of forty-five feet.
5. 5. A recreational vehicle, a power unit, a farm vehicle, a horse trailer or wheeled equipment as defined in section 28-2153 if used in combination with two units and if the combination does not exceed sixty-five feet in length.
6. 6. A recreational vehicle as defined in section 41-4001, paragraph 33, subdivision (b) that does not exceed a length of forty-five feet.

C. The following restrictions apply:

1. 1. The length of a semitrailer operating in a truck tractor-semitrailer combination or a truck tractor-semitrailer-forklift combination shall not exceed fifty-seven feet six inches.
2. 2. The length of a semitrailer or trailer operating in a truck tractor-semitrailer-trailer combination shall not exceed twenty-eight feet six inches.
3. 3. The length of a trailer operating in a truck-trailer combination shall not exceed twenty-eight feet six inches.
4. 4. If the length of a semitrailer is more than fifty-three feet, the overall length of a truck tractor-semitrailer combination shall not exceed sixty-five feet on all highways, except for the national intercity truck route network designated by the United States secretary of transportation as required by the surface transportation assistance act of 1982 or on a system of highways that is designated by a local authority. In designating the streets, the local authority shall consider any reasonable restriction including such safety restrictions as structural hazards and street width and any other safety factors identified by the local authority as a hazard to the motoring public.
5. 5. A vehicle transporter and the semitrailer it draws shall not exceed a length of eighty feet with a front overhang of not more than four feet and a rear overhang of not more than six feet.
6. 6. A truck-semitrailer combination shall not exceed an overall length of sixty-five feet.

F. Pursuant to a permit issued pursuant to section 28-1103, a truck or a truck tractor-semitrailer may draw not more than two additional trailers or semitrailers. The department shall adopt rules governing the movement and safety of a combination of vehicles under this subsection and authorizing the issuance in advance of prepaid permits. The rules shall include the adoption of minimum speeds on grades, lighting, signing, identification and braking requirements and any other rules the department deems necessary. The permit issued pursuant to this subsection is limited to the following highways:

1. 1. An interstate highway that connects with two states if both states allow such combinations of trailers or semitrailers and if the interstate highway does not exceed forty miles between the connecting states.
2. 2. A state route or highway that is located within four miles of and extends to the border of this state and an adjacent state that allows such combinations of trailers or semitrailers.
3. 3. A state route or highway that extends at least ten miles through an Indian reservation, that does not cross the Colorado river and that is located within twenty miles of and extends to the border of this state and an adjacent state that allows such combinations of trailers or semitrailers.

G. Notwithstanding subsections B and C of this section:

1. 1. A motor vehicle may draw one single-axle tow dolly on which a motor vehicle may be transported. A person shall secure the raised end of any motor vehicle being transported pursuant to this paragraph to the tow dolly by two separate chains, cables or equivalent devices adequate to prevent shifting or separation of the drawn vehicle and the tow dolly.
2. 2. A truck or a truck tractor may draw a trailer or semitrailer that does not exceed a length of fifty-seven feet only on an interstate highway or on a highway that is within ten miles of an interstate highway if the trailer or semitrailer is manufactured in this state and is traveling with or without a load from its place of manufacture to be delivered for use outside this state.

3. 3. A recreational vehicle may pull two units if all of the following conditions are met:

   1. (a) The middle unit is equipped with a fifth wheel and brakes. The middle unit may be a farm vehicle or a horse trailer and shall have a weight equal to or greater than the rear unit.
   2. (b) If the rear unit has a gross weight of three thousand pounds or more, it is equipped with brakes.
   3. (c) The total combined gross weight of the towed units does not exceed the manufacturer's stated gross vehicle weight of the towing unit.
4. 4. A vehicle transporter may transport cargo or general freight on a backhaul in compliance with section 28-1100.

H. For the purposes of this section:

1. 1. "Backhaul" means the return trip of a vehicle transporter carrying cargo or general freight over all or part of the same route.
2. 2. "Farm vehicle" has the same meaning prescribed in section 28-2514.
3. 3. "Recreational vehicle" means a motor vehicle that is designed and customarily used for private pleasure, including vehicles commonly called motor homes, pickup trucks with campers and pickup trucks with a fifth wheel trailing device.