Wyoming Statutes

Wyo. Stat. § 31-5-303 (2026)

Establishing maximum speed limits by local

✓ current as of May 2026

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authorities.

    (a)   Repealed By Laws 2002, Ch. 68, § 2.

     (b) Except as provided in subsection (f) of this section,
in compliance with rules promulgated by the department, local
authorities in their respective jurisdictions may determine the
proper maximum speed for all streets and highways within their
respective corporate jurisdiction which maximum speed is
reasonable and safe and which may be greater or less than the
maximum speed permitted under this act. The rules promulgated by
the department shall adopt standards consistent with national
practices. The department shall not promulgate rules that
require a speed study before a local authority establishes a
maximum speed limit for unpaved roads in accordance with
subsection (f) of this section.
     (c) Any altered limit established under this section shall
be effective during hours of darkness or at other times as may
be determined when appropriate signs giving notice thereof are
erected upon the street or highway.

     (d) Any alteration of maximum limits on state highways or
extensions thereof in a municipality by local authorities is not
effective until the alteration has been approved by the
superintendent.

     (e) Not more than six (6) alterations authorized under
this section shall be made per mile along a street or highway,
except in the case of reduced limits at intersections, and the
difference between adjacent limits shall not be more than
fifteen (15) miles per hour.

     (f) A local authority may decrease a maximum speed limit
to not less than thirty-five (35) miles per hour for unpaved
roadways under W.S. 31-5-301(b)(iv) without first conducting a
speed study. A local authority may establish a temporary speed
limit of less than thirty-five (35) miles per hour without
conducting a speed study and for a period not exceeding one (1)
year for purposes including, but not limited to, construction,
maintenance, special events, emergency situations and changes in
use. Before establishing a temporary speed limit of less than
thirty-five (35) miles per hour, the local authority shall
consult with the local authority's engineer or road and bridge
superintendent and law enforcement with jurisdiction over the
roadway.

Notes of Decisions

Cited in 4 cases, 1983–2019 · leading case: State, Dep't of Revenue & Taxation, Motor Veh. Div. v. Andrews, 671 P.2d 1239 (Wyo. 1983).

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State, Dep't of Revenue & Taxation, Motor Veh. Div. v. Andrews, 671 P.2d 1239 (Wyo. 1983). · cites it 3× “31-131 [§ 31-5-302] and 31-132 [§ 31-5-303].” The district court decided that the “50-mile hour zone” violation relied upon by the department must be considered for purposes of § 31-5-1201(c), W.”

State, Dept. of Rev. & Tax., Motor Veh. v. Andrews, 671 P.2d 1239 (Wyo. 1983). · cites it 3× “31-131 [§ 31-5-302] and 31-132 [§ 31-5-303]." The district court decided that the "50-mile hour zone" violation relied upon by the department must be considered for purposes of § 31-5-1201(c), W.”

State, Dep't of Revenue & Taxation v. Guadagnoli, 677 P.2d 823 (Wyo. 1984). “31-131 [§ 31-5-302] and 31-132 [§ 31-5-303].”, (emphasis added), and we then said: “It is our conclusion that reliance by the appellee and by the district court upon § 31-5-1201(c), W.”

Caldwell v. UNUM Life Ins. Co. (10th Cir. 2019). “Wyo. Stat. Ann. § 31-5-303 (b) (West 2018).”

— Wyo. Stat. § 31-5-303(a) — 2 cases

State, Dep't of Revenue & Taxation, Motor Veh. Div. v. Andrews, 671 P.2d 1239 (Wyo. 1983). “31-131 [§ 31-5-302] and 31-132 [§ 31-5-303].” The district court decided that the “50-mile hour zone” violation relied upon by the department must be considered for purposes of § 31-5-1201(c), W.”

State, Dept. of Rev. & Tax., Motor Veh. v. Andrews, 671 P.2d 1239 (Wyo. 1983). “31-131 [§ 31-5-302] and 31-132 [§ 31-5-303]." The district court decided that the "50-mile hour zone" violation relied upon by the department must be considered for purposes of § 31-5-1201(c), W.”

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