2019 Utah Code
Title 41 - Motor Vehicles
Chapter 6a - Traffic Code
Part 6 - Speed Restrictions
Section 602 - Speed limits established on state highways.

Universal Citation: UT Code § 41-6a-602 (2019)
Effective 5/10/2016
41-6a-602. Speed limits established on state highways.
  • (1)
    • (a) The Department of Transportation shall determine the reasonable and safe speed limit for each highway or section of highway under its jurisdiction.
    • (b) For each highway or section of highway, each speed limit shall be based on a traffic engineering and safety study consistent with the requirements and recommendations in the most current version of the "Manual on Uniform Traffic Control Devices."
    • (c) The traffic engineering and safety studies shall include:
      • (i) the design speed;
      • (ii) prevailing vehicle speeds;
      • (iii) accident history;
      • (iv) highway, traffic, and roadside conditions; and
      • (v) other highway safety factors.
  • (2) In addition to the provisions of Subsection (1), the Department of Transportation may establish different speed limits on a highway or section of highway based on:
    • (a) time of day;
    • (b) highway construction;
    • (c) type of vehicle;
    • (d) weather conditions; and
    • (e) other highway safety factors.
  • (3)
    • (a) Except as provided in Subsection (3)(b) and (c), a posted speed limit may not exceed 65 miles per hour.
    • (b) Except as provided in Subsection (3)(c), a posted speed limit on a freeway or other limited access highway may not exceed 75 miles per hour.
    • (c)
      • (i) The Department of Transportation may establish a posted speed limit on a freeway or other limited access highway that exceeds the maximum speed limit in Subsection (3)(b) if the speed limit is based on a highway traffic engineering and safety study.
      • (ii) If the Department of Transportation establishes a posted speed limit that exceeds the limit under Subsection (3)(b), the Department of Transportation shall evaluate the results and impacts of increasing a speed limit under this Subsection (3)(c).
    • (d) This Subsection (3) is an exception to the provisions of Subsections (1) and (2).
  • (4) When establishing or changing a speed limit, the Department of Transportation shall consult with the following entities prior to erecting or changing a speed limit sign:
    • (a) the county for state highways in an unincorporated area of the county;
    • (b) the municipality for state highways within the municipality's incorporated area;
    • (c) the Department of Public Safety; and
    • (d) the Transportation Commission.
  • (5) The speed limit is effective when appropriate signs giving notice are erected along the highway or section of the highway.


Amended by Chapter 137, 2016 General Session
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