Utah Code Ann. § 41-6a-1706 – Occupancy of a trailer or semitrailer while being moved on highway prohibited.

(1) A person may not occupy a trailer or semitrailer while it is being drawn by a motor vehicle on a public highway.
(2) This section does not apply to a:
1. (a) livestock trailer or livestock semitrailer;
2. (b) trailer or semitrailer being used for participation in a parade; or
3. (c) trailer or semitrailer being used in an agricultural operation.

Renumbered and Amended by Chapter 2, 2005 General Session