(a) Implements of husbandry, as defined by regulation under AS 28.05.011, are not subject to restrictions adopted under AS 19.10.060(a)(1) unless the implement is the load of another vehicle. Implements of husbandry may be operated on highways subject to the department's jurisdiction without obtaining a permit, as provided in this section.
(b) The incidental operation of an implement of husbandry up to 12 feet wide on a state highway is authorized without a permit if the implement
(1) is operated only during the period from one-half hour after sunrise to one-half hour before sunset;
(2) displays a slow-moving vehicle emblem on the rear of the implement;
(3) displays a red flag on the implement in a location that affords greatest visibility; and
(4) is moving from one farm operation to another within 50 miles of the home base of the implement of husbandry.
(c) An implement of husbandry that is more than 12 feet wide may be operated on a state highway without a permit if it meets the provisions of (b) of this section and is preceded by a pilot car during operation on the highway.