321.121  Special trucks for farm use.
  1.  a.  Except as provided in paragraph “b”, the annual registration fee for a special truck with a gross weight of six tons shall be one hundred dollars, and the annual registration fee for a special truck with a gross weight exceeding six tons but not exceeding eighteen tons shall be as follows:
For a gross         And not                  The annual

 weight         exceeding:                  registration

 exceeding:                  fee shall be:

  6 Tons    7 Tons    $125

  7 Tons    8 Tons    $155

  8 Tons    9 Tons    $170

  9 Tons    10 Tons    $190

10 Tons    11 Tons    $205

11 Tons    12 Tons    $225

12 Tons    13 Tons    $245

13 Tons    14 Tons    $265

14 Tons    15 Tons    $280

15 Tons    16 Tons    $295

16 Tons    17 Tons    $305

17 Tons    18 Tons    $315
  b.  If the registration is a renewal for a special truck registered to the same owner prior to January 1, 2009, the annual registration fee shall be eighty dollars for a gross weight of six tons, one hundred dollars for a gross weight of seven tons, one hundred twenty dollars for a gross weight of eight tons, and in addition, fifteen dollars for each ton over eight tons and not exceeding eighteen tons. As used in this paragraph, “owner” includes a surviving spouse who is required to transfer title pursuant to section 321.46 or 321.47.
  c.  The annual registration fee for a special truck with a gross weight registration exceeding eighteen tons but not exceeding nineteen tons shall be three hundred twenty-five dollars and for a gross weight registration exceeding nineteen tons but not exceeding twenty tons the annual registration fee shall be three hundred seventy-five dollars.
  d.  The additional annual registration fee for a special truck for a gross weight registration in excess of twenty tons is twenty-five dollars for each ton over twenty tons and not exceeding thirty-two tons.
  2.  Upon approval of the application and payment of the proper fees, the county treasurer shall issue regular registration plates for the special truck. The department may adopt rules requiring the use of a sticker or other means to identify motor vehicles registered under this section.
  3.  A person convicted of or found by audit to be using a motor vehicle registered as a special truck for any purpose other than permitted by section 321.1, subsection 75, shall, in addition to any other penalty imposed by law, be required to pay regular annual motor vehicle registration fees for such motor vehicle.
[C71, 73, 75, 77, 79, 81, §321.121; 81 Acts 2d Ex, ch 2, §6]
82 Acts, ch 1062, §18, 38; 86 Acts, ch 1210, §3; 2008 Acts, ch 1113, §6, 11, 93; 2011 Acts, ch 38, §5; 2011 Acts, ch 68, §3, 5
Referred to in §321.1, §321.26, §321.106, §321.134, §331.557
Subsection 2 applies for registration plates issued during registration periods beginning on or after January 1, 2012; phased-in elimination of special truck plates; 
2011 Acts, ch 68, §4, 5