Except as provided in this section and section 169.82, the provisions of sections 169.80 to 169.88 that govern size, weight, and load do not apply to an implement of husbandry while operated in compliance with this section.
(a) An implement of husbandry that is not self-propelled and is equipped with pneumatic tires may not be operated on a public highway with a maximum wheel load that exceeds 500 pounds per inch of tire width.
(b) After December 31, 2009, a person operating or towing an implement of husbandry on a bridge must comply with the gross weight limitations provided in section 169.824.
A towed implement of husbandry must be equipped with (1) safety chains that meet the requirements of section 169.82, subdivision 3, paragraph (b); (2) a regulation fifth wheel and kingpin assembly approved by the commissioner of public safety; or (3) a hitch pin or other hitching device with a retainer that prevents accidental unhitching.
Despite subdivision 2, a person operating or towing an implement of husbandry must comply with a sign that limits the maximum weight allowed on a bridge.
A person operating or towing an implement of husbandry that is higher than 13 feet six inches or wider than allowed under section 169.80, subdivision 2, must ensure that the operation or transportation does not damage a highway structure, utility line or structure, or other fixture adjacent to or over a public highway.
No person may operate or tow an implement of husbandry at a speed of more than 30 miles per hour.
(a) An implement of husbandry may not be operated or towed on an interstate highway.
(b) An implement of husbandry may be operated or towed to the left of the center of a roadway only if it is escorted at the front by a vehicle displaying hazard warning lights visible in normal sunlight and the operation does not extend into the left half of the roadway more than is necessary.
An implement of husbandry must be equipped with lights that comply with section 169.55, subdivisions 2 and 3.
Notwithstanding section 169.67:
(a) A self-propelled implement of husbandry must be equipped with brakes adequate to control its movement and to stop and hold it and any vehicle it is towing.
(b) A towed implement of husbandry must be equipped with brakes adequate to control its movement and to stop and hold it if:
(1) it has a gross vehicle weight of more than 24,000 pounds and was manufactured and sold after January 1, 1994;
(2) it has a gross vehicle weight of more than 12,000 pounds and is towed by a vehicle other than a self-propelled implement of husbandry; or
(3) it has a gross vehicle weight of more than 3,000 pounds and is being towed by a registered passenger automobile other than a pickup truck as defined in section 168.002, subdivision 26.
(c) If a towed implement of husbandry with a gross vehicle weight of more than 6,000 pounds, or more than 3,000 pounds if manufactured after January 1, 2011, is required under paragraph (b) to have brakes, it must also be equipped with brakes adequate to stop and hold it if it becomes detached from the towing vehicle.