321E.8A  Self-propelled implement of husbandry — annual permit.
  1.  A self-propelled implement of husbandry equipped with flotation tires that is designed to be loaded and operated in the field and used exclusively for the application of organic or inorganic plant food materials, agricultural limestone, or agricultural chemicals, and that, as newly manufactured, exceeds the axle weight limits under section 321.463 when unloaded, may be operated on noninterstate highways in a county pursuant to a permit issued by the department for travel within the county, provided the vehicle does not violate posted weight limitations on bridges. Prior to issuing a permit, the department shall collect a fee of six hundred dollars for each county in which the vehicle will be operated during the period of the permit beginning July 1 and ending June 30, provided that a permit shall not be issued for a vehicle for operation in more than ten counties and the total amount of fees collected for a vehicle for the period of the permit shall not exceed three thousand five hundred dollars. Moneys collected by the department on behalf of the counties in which the vehicle will be operated shall be allotted equally to those counties and deposited in the secondary road funds of those counties. A vehicle for which a permit is issued under this section shall be assigned a permit number that shall be displayed on the door of the vehicle in numbers that contrast sharply in color with the background on which the number is placed, be readily legible during daylight hours from a distance of fifty feet when the vehicle is stationary, and be maintained in a manner that retains the legibility. Only vehicles originally purchased or ordered prior to February 1, 2007, are eligible for a permit. New permits shall not be issued on or after July 1, 2007; however, a permit issued for a vehicle under this section prior to July 1, 2007, may be renewed for that vehicle annually upon payment of the appropriate county fees.
  2.  A vehicle described in subsection 1 shall not be operated on a highway without a permit issued under this section. The owner of a vehicle that is operated in violation of section 321E.7, subsection 4, or this section is subject to a civil penalty of ten thousand dollars, in addition to any other penalties that may apply.
2007 Acts, ch 143, §20; 2008 Acts, ch 1124, §12