Utah Code Ann. § 41-6a-1502 – Motorcycles, motor-driven cycles, or all-terrain type I vehicles -- Operation on public highways.

(1)
1. (a) A motorcycle or a motor-driven cycle is entitled to full use of a lane.
2. (b) An individual may not operate a motor vehicle in a manner that deprives a motorcycle or motor-driven cycle of the full use of a lane.
3. (c) This Subsection (1) does not apply to motorcycles or motor-driven cycles operated two abreast in a single lane.
(2) The operator of a motorcycle or motor-driven cycle may not overtake and pass in the same lane occupied by the vehicle being overtaken.
(3)
1. (a) Except as described in Subsection (3)(b), an individual may not operate a motorcycle or motor-driven cycle between:
  1. (i) lanes of traffic; or
  2. (ii) adjacent lines or rows of vehicles.
2. (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 or motor-driven cycles 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.