Utah Code § 41-6a-1501: Motorcycle-- Place for operator to ride -- Passengers.

(1) An individual operating a motorcycle shall ride only on the permanent and regular seat attached to the motorcycle.

(2)

(a) Except as provided in Subsection (2)(b):

(i) an individual operating a motorcycle may not carry any other individual on the motorcycle; and

(ii) a passenger may not ride on a motorcycle.

(b) If a motorcycle is designed to carry more than one individual, a passenger may ride on:

(i) the permanent and regular seat, if designed for two individuals; or

(ii) another seat firmly attached to the motorcycle at the rear or side of the operator.

(3) An individual shall ride on a motorcycle only while sitting astride the seat, facing forward, with one leg on either side of the motorcycle.

(4) An individual may not operate a motorcycle while carrying a package, bundle, or other article that prevents the operator from keeping both hands on the handlebars.

(5) An operator of a motorcycle may not carry an individual and an individual may not ride in a position that interferes with:

(a) the operation or control of the motorcycle; or

(b) the view of the operator.

(6) A violation of this section is an infraction.