Utah Code § 41-6a-605
Minimum speed regulations
Redline — January 1, 2025 → current.View current text →
Current — October 1, 2026
As of January 1, 2025
(1) A person may not operate a motor vehicle at a speed so slow as to impede or block the normal and reasonable movement of traffic except when: (a) a reduced speed is necessary for safe operation; (b) upon a grade; or (c) in compliance with a traffic-control device.
(1) An individual may not operate a motor vehicle at a speed so slow as to impede or block the normal and reasonable movement of traffic except when: (a) a reduced speed is necessary for safe operation; (b) upon a grade; or (c) in compliance with a traffic-control device.
(2) Operating a motor vehicle on a limited access highway at less than the speed limit side by side with and at the same speed as a vehicle operated in the adjacent right lane is evidence of a violation of Subsection (1).
(2) Operating a motor vehicle on a limited access highway at less than the speed limit side by side with and at the same speed as a vehicle operated in the adjacent right lane is evidence of a violation of Subsection (1).
(3) (a) If, based on an engineering and traffic investigation, a highway authority determines that slow speeds on any part of a highway under its jurisdiction consistently impede the normal and reasonable movement of traffic, the highway authority may post a minimum speed limit. (b) If a minimum speed limit is posted under this Subsection (3), a person may not operate a vehicle at a speed below the posted minimum speed limit except: (i) when necessary for safe operation; or (ii) in accordance with Section 41-6a-205. (c) The minimum speed limit is effective when appropriate signs giving notice are erected along the highway or section of the highway.
(3) (a) If, based on an engineering and traffic investigation, a highway authority determines that slow speeds on any part of a highway under the highway authority's jurisdiction consistently impede the normal and reasonable movement of traffic, the highway authority may post a minimum speed limit. (b) If a minimum speed limit is posted under this Subsection (3), an individual may not operate a vehicle at a speed below the posted minimum speed limit except: (i) when necessary for safe operation; or (ii) in accordance with Section 41-6a-205. (c) The minimum speed limit is effective when appropriate signs giving notice are erected along the highway or section of the highway.
(4) An individual operating a classic vehicle as described in Section 41-28-102 is exempt from the requirements of this section.
(5) A violation of this section is an infraction.
Official source: Utah State Legislature. Reproduced from public-domain Utah statutes; confirm against the official source for the current text. Not legal advice.