N.D. Cent. Code § 39-12-04 (2025)
1. Vehicles operated on a highway in this state may not exceed a total outside width, including load thereon, of eight feet six inches [2.59 meters]. This limitation does not apply to: a. Construction and building contractors' equipment and vehicles used to move such equipment which does not exceed ten feet [3.05 meters] in width when being moved by contractors or resident carriers. b. Implements of husbandry being moved by resident farmers, ranchers, governmental entities, dealers, or manufacturers between sunrise and sunset. Furthermore, the limitation does not apply to implements of husbandry being moved between sunset and sunrise by resident farmers, ranchers, governmental entities, dealers, or manufacturers on public state, county, or township highway systems other than interstate highway systems. c. Hay in the stack or bale being moved along the extreme right edge of a roadway between sunrise and sunset by someone other than a commercial mover. d. Commercial movement of haystacks or hay bales with vehicles designed specifically for hauling hay, commercial movement of self-propelled fertilizer spreaders and self-propelled agricultural chemical applicators, whether operating under their own power or being transported by another vehicle, commercial movement of portable grain cleaners, commercial movement of forage harvesters, and the commercial movement of hay grinders, which may be moved on the highway after obtaining a seasonal permit issued by the highway patrol. The highway patrol shall issue seasonal permits that are valid during daylight hours on any day of the week, or that are valid at all times for the movement of self-propelled fertilizer spreaders and self-propelled agricultural chemical applicators, to any commercial entity otherwise qualified under this subdivision. Self-propelled fertilizer spreaders and self-propelled agricultural chemical applicators operating under their own power between sunset and sunrise must display vehicle hazard warning signal lamps as described in subsection 3 of section 39-21-19.1. The seasonal permit is in lieu of registration requirements for the permit period. No seasonal permit may be issued, unless proof of financial responsibility in a minimum of three hundred thousand dollars is filed and the appropriate permit fee is paid. The seasonal permit may also be issued for hauling hay bales with vehicles or vehicle combinations other than those
designed specifically for hauling haystacks. This seasonal permit, however, will not be in lieu of registration requirements. All permit fees must be deposited in the state highway distribution fund.
system as designated by the director, only when federal law requires the exemption.
g. Safety and energy conservation devices and any additional length exclusive devices as determined by the highway patrol for the safe and efficient operation of commercial motor vehicles. Length exclusive devices are appurtenances at the front or rear of a commercial motor vehicle semitrailer or trailer, whose function is related to the safe and efficient operation of the semitrailer or trailer.
5. Motor homes, house cars, travel trailers, fifth-wheel travel trailers, camping trailers, and truck campers may exceed eight feet six inches [2.59 meters] in width if the excess is attributable to an appurtenance that extends beyond the body of the vehicle no more than six inches [15.24 centimeters] on either side of the vehicle. For purposes of this subsection, the term appurtenance includes a shade awning and its support hardware, and any appendage that is intended to be an integral part of a motor home, house car, travel trailer, fifth-wheel travel trailer, camping trailer, or truck camper.