Iowa Code

Iowa Code § 321.233 (2026)

Road workers exempted

✓ current as of July 2026

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This chapter, except sections 321.277 and 321.280, does not apply to persons and motor vehicles and other equipment while actually engaged in work upon the surface of a highway officially closed to traffic but does apply to such persons and vehicles when traveling to or from such work. The minimum speed restriction of section 321.285, subsection 5, and the\n\nTue Dec 09 22:16:59 2025 Iowa Code 2026, Chapter 321 (137, 2) §321.233, MOTOR VEHICLES AND LAW OF THE ROAD 170\n\nprovisions of sections 321.297, 321.298, and 321.323 do not apply to road workers operating maintenance equipment on behalf of any state or local authority while engaged in road maintenance, road blading, snow and ice control and removal, and granular resurfacing work on a highway, whether or not the highway is closed to traffic. [C39, §5017.06; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.233; 82 Acts, ch 1154, §1] 85 Acts, ch 167, §1; 86 Acts, ch 1220, §36; 90 Acts, ch 1230, §64; 97 Acts, ch 104, §18; 2009 Acts, ch 133, §239

Notes of Decisions

Cited in 3 cases, 1968–1978 · leading case: Hartwig v. Olson, 158 N.W.2d 81 (Iowa 1968).

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Hartwig v. Olson, 158 N.W.2d 81 (Iowa 1968). · cites it 4× “Code section 321.233 provides: “The provisions of this chapter shall not apply to persons, teams, motor vehicles and other equipment while actually engaged in work upon the surface of a highway but shall apply to such persons and vehicles when traveling to or from such work.”

State v. Wehde, 258 N.W.2d 347 (Iowa 1977). · cites it 2× “We cannot hold classifications under the statute and its exceptions are patently arbitrary.”

Hoth v. Clayton Cnty., 269 N.W.2d 133 (Iowa 1978). · cites it 3× “§ 321.233, The Code. The trial court instructed the jury that this provision applied to Amundson as a matter of law.”

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