Iowa Code » Chapter 321 — MOTOR VEHICLES AND LAW OF THE ROAD
Iowa Code

Iowa Code § 321.490 (2026)

Conviction not to affect credibility

✓ current as of July 2026
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The conviction of a person upon a charge of violating any provision of this chapter or other traffic regulation less than a felony shall not affect or impair the credibility of such person as a witness in any civil or criminal proceeding. [C39, §5037.07; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.490]

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Notes of Decisions
Cited in 3 cases, 1964–2011 · leading case: Book v. Datema, 131 N.W.2d 470 (Iowa 1964).
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Book v. Datema, 131 N.W.2d 470 (Iowa 1964). · cites it 8× “Although apparently not considered by the trial court defendant also contends the evidence of his plea of guilty was barred by Code section 321.490, I.C.A. It provides: "Conviction not to affect credibility.”
Lee v. Small, 829 F. Supp. 2d 728 (N.D. Iowa 2011). · cites it 6× “” Iowa Code § 321.490 . While § 321.489 precludes admissibility of the “record of conviction” and § 321.”
Sayre Ex Rel. Sayre v. Andrews, 146 N.W.2d 336 (Iowa 1966). · cites it 2× “We need not determine what our holding would be in interpreting section 321.490 if such testimony is offered for impeachment and the question is properly raised in the trial court.”
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