No person shall turn a vehicle from a direct course upon a highway unless and until such
movement can be made with reasonable safety and then only after giving a clearly audible
signal by sounding the horn if any pedestrian may be affected by such movement or after
giving an appropriate signal in the manner provided in sections 321.315 through 321.318 in
the event any other vehicle may be affected by such movement.
[S13, §1571-m18; C24, 27, 31, 35, §5032; C39, §5025.04; C46, 50, 54, 58, 62, 66, 71, 73, 75,
77, 79, 81, §321.314]
2021 Acts, ch 80, §171
Referred to in §321.316, 805.8A(6)(n)
For applicable scheduled fine, see §805.8A, subsection 6\n\nTue Dec 09 22:17:00 2025 Iowa Code 2026, Chapter 321 (137, 2)
§321.315, MOTOR VEHICLES AND LAW OF THE ROAD 200
\n
Notes of Decisions
Cited in
29
cases (
1 in the last 5 years), 1948–2022 · leading case:
State v. Malloy, 453 N.W.2d 243 (Iowa Ct. App. 1990).
State v. Malloy, 453 N.W.2d 243 (Iowa Ct. App. 1990).
· cites it 22× “The district court found defendant had failed to use a turn signal in violation of Iowa Code section 321.314 and that such a failure constituted probable cause for stopping defendant’s vehicle.”
Wagaman v. Ryan, 142 N.W.2d 413 (Iowa 1966).
· cites it 14× “As defendant admits, it is not entirely clear whether plaintiff intended to plead a violation of the part of section 321.314, Code, 1962, -which provides “No person shall turn a vehicle from *1356 a direct course upon a highway unless and until such movement can be made with…”
Clayton v. McIlrath, 44 N.W.2d 741 (Iowa 1950).
· cites it 8× “and fourth charges of negligence in plaintiff’s petition are that defendant was negligent in turning his vehicle from a direct course upon the highway (3) without first ascertaining if such movement could be made with safety and (4) without giving an appropriate signal to…”
Janvrin v. Broe, 33 N.W.2d 427 (Iowa 1948).
· cites it 16× “As heretofore noted, the court withdrew defendant’s counterclaim for the stated reason that defendant had not given the hand and horn signal required by section 321.314, Code of 1946, and was therefore negligent as a matter of law.”
Ruby Ex Rel. Ruby v. Easton, 207 N.W.2d 10 (Iowa 1973).
· cites it 8× “As to plaintiffs’ specification concerning failure to warn they first seek to invoke Code § 321.314. It provides in part: “When signal required.”
Soreide v. Vilas & Co., 78 N.W.2d 41 (Iowa 1956).
· cites it 4× “The first specification here, in effect, charges a violation of section 321.314, Code 1954, I.C.A. It follows from what we have said in Divisions III and IV hereof and from our conclusion it was proper to submit specification 2 above referred to, it was not error to submit the…”
Daniels v. Bloomquist, 138 N.W.2d 868 (Iowa 1965).
· cites it 4× “(4) Turning out to the left without giving 'an appropriate signal to plaintiff’s driver of defendant’s intention to' turn, contrary to section 321.314, and (5) Turning the pickup truck from a direct course upon the highway without first ascertaining such movement could be made…”
State v. Kinkead, 570 N.W.2d 97 (Iowa 1997).
· cites it 2× “Under Iowa Code section 321.314, drivers are only required to use turn signals when another vehicle may be affected by the turn.”
Miller v. McCoy Truck Lines, Inc., 52 N.W.2d 62 (Iowa 1952).
· cites it 6× “Appellants contend that under section 321.314, Code of 1950, they were authorized to turn their vehicle on the highway, and violated no statute in so doing.”
Mathews v. Beyer, 116 N.W.2d 477 (Iowa 1962).
· cites it 4× “Such signal might be *481 given by hand and arm in the manner provided by section 321.”
United States v. Obed Rodriguez-Lopez, 444 F.3d 1020 (8th Cir. 2006).
· cites it 2× “Discussion On appeal, Rodriguez-Lopez contends that his motion to suppress should have been granted because the stop of his vehicle was constitutionally invalid, as his failure to signal his turn did not constitute a traffic violation under Iowa Code § 321.314 . We hold that…”
Fischer v. Hawkeye Stages, 37 N.W.2d 284 (Iowa 1949).
· cites it 3× “So far as applicable here, sections 321.314, 321.315, and 321.318, Code,.”
Annotations are extracted automatically from the opinions in the
Syfert caselaw corpus and ranked by authority, recency, and
treatment. Dots show Syfertize treatment of the citing case itself.