{"data":{"id":"us-ia/iowa-code-321.310","jurisdiction":"us-ia","citation":"Iowa Code § 321.310","heading":"Towing four-wheeled trailers.","body":"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.\n2. 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.","path":["Title VIII - TRANSPORTATION (Ch. 306 - 330B)","Chapter 321 - MOTOR VEHICLES AND LAW OF THE ROAD"],"source_url":"https://www.legis.iowa.gov/docs/code/2026/321.310.pdf","current_through":"Iowa Code 2026 edition","vintage":"","retrieved_at":"2026-09-14T19:40:08Z","sha256":"f8dc6d639257b5eeac2a855ad11c3bf2d63e1807c9f47ac6f5b553d5381cc7cc","source_id":"us-ia","stale":false,"prev":"us-ia/iowa-code-321.309","next":"us-ia/iowa-code-321.311"},"notice":"GroundRules: Original legal text. Not legal advice."}