Utah Code § 41-6a-1502: Motorcycles and all-terrain type I vehicles -- Operation on public highways.

(1)

(a) A motorcycle is entitled to full use of a lane.

(b) An individual may not operate a motor vehicle in a manner that deprives a motorcycle of the full use of a lane.

(c) This Subsection (1) does not apply to motorcycles operated two abreast in a single lane.

(2) The operator of a motorcycle may not overtake and pass in the same lane occupied by the vehicle being overtaken.

(3)

(a) Except as described in Subsection (3)(b), an individual may not operate a motorcycle between:

(i) lanes of traffic; or

(ii) adjacent lines or rows of vehicles.

(b) Subsection (3)(a) does not apply to an individual operating a motorcycle engaging in lane filtering as described in Section 41-6a-704.

(4) Motorcycles may not be operated more than two abreast in a single lane.

(5) Subsections (2) and (3)(a) do not apply to peace officers acting in the peace officers' official capacities.

(6) The provisions of this section also apply to all-terrain type I vehicles.

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