Arizona Revised Statutes

Ariz. Rev. Stat. § 28-702 (2026)

State highway speed limits

✓ current as of May 2026
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A. If the director determines on the basis of an engineering and traffic investigation that any maximum speed limit is greater or less than is reasonable or safe under the conditions found to exist on any part of a state highway, the director may determine and declare a reasonable and safe maximum speed limit or varying speed limits for the location.

B. The maximum speed limit determined pursuant to this section is effective when appropriate signs giving notice of the maximum speed limit are erected.

C. The director may declare a maximum speed limit that is determined pursuant to this section to be effective at all times or at such times as indicated on the speed limit signs. The director may establish varying speed limits for different times of day, different types of vehicles, varying weather conditions and other factors bearing on safe speeds. The varying limits are effective when posted on appropriate fixed or variable signs.

Notes of Decisions
Cited in 2 cases, 1965–1977 · leading case: State v. Rich, 563 P.2d 918 (Ariz. Ct. App. 1977).
State v. Rich, 563 P.2d 918 (Ariz. Ct. App. 1977). “The speed limits set forth in this section may be altered as authorized in §§ 28-702 and 28-703. D. The maximum lawful speed as provided in this section shall be reduced to that which is reasonable and prudent under the conditions and having regard to the actual and potential…”
Hunsaker v. Smith, 399 P.2d 185 (Ariz. Ct. App. 1965). · cites it 2× “The appellants cite no authority whatsoever to this effect, and base their argument entirely upon the wording of the statute in question.”
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