321.310  Towing four-wheeled trailers.
  1.  A motor vehicle shall not tow a four-wheeled trailer with a steering axle, or more than one trailer or semitrailer, or both in combination. However, this section does not apply to a motor home, motorsports recreational vehicle, multipurpose vehicle, motor truck, truck tractor or road tractor nor to a farm tractor towing a four-wheeled trailer, nor to a farm tractor or motor vehicle towing implements of husbandry, nor to a wagon box trailer used by a farmer in transporting produce, farm products, or supplies hauled to and from market.
  2.  Any four-wheeled trailer towed by a truck tractor or road tractor shall be registered under the semitrailer provisions of section 321.123; provided that the provisions of this subsection shall not apply to motor vehicles drawing wagon box trailers used by a farmer in transporting produce, farm products, or supplies hauled to and from market, or to a four-wheeled trailer towed by a motorsports recreational vehicle.
[C39, §5024.14; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.310]
84 Acts, ch 1226, §1; 2014 Acts, ch 1127, §10
Referred to in §805.8A(12)(a)
For applicable scheduled fines, see §805.8A, subsection 12, paragraph a