City of Cedar Rapids v. Marla Marie Leaf, 923 N.W.2d 184

Cedar Rapids enacted a municipal ordinance authorizing an automated traffic enforcement (ATE) system and contracted with Gatso USA to install, maintain, and process ATE images; the police department reviewed and approved potential violations before notices were mailed.
Leaf received a notice alleging she sped (68 mph in a 55 mph zone) on I-380; she requested an administrative hearing, lost, then elected to have the City file a municipal infraction in small claims court.
At the small claims bench trial Leaf admitted she was driving at the cited time/place, disputed speeding due to icy conditions, and challenged the ATE process (calibration, administrative hearing, delegation, IDOT rules, equal protection).
Magistrate found Cedar Rapids proved the violation by clear, convincing, and satisfactory evidence (calibration testimony, police approval of notice); assessed $75 plus costs; district court and court of appeals affirmed.
On further review, the Iowa Supreme Court affirmed: substantial evidence supported the finding, Leaf’s procedural and substantive constitutional claims failed, IDOT rule/preemption claims were unpreserved or resolved by other precedent, and no unlawful delegation to Gatso was shown.

Issue	Plaintiff's Argument (Leaf)	Defendant's Argument (Cedar Rapids)	Held
Sufficiency of evidence that Leaf sped	Evidence was hearsay and calibration records inadequate; eyewitnesss (Leaf/ passenger) said she was not speeding	Officer testimony and calibration records (and Leaf’s admission she was driving) suffice; hearsay admissible in small claims	Court: Substantial evidence supports clear-and-convincing showing of violation
Procedural due process of ATE administrative process	Administrative hearing biased, misleading notices, limited scheduling, volunteer hearing officer; denies fair process	Administrative hearing optional; full small‑claims judicial review available; no prejudice	Court: No procedural due process violation given available de novo judicial process in small claims
Delegation of police power to private contractor and volunteer hearing officers	Gatso screened and mailed notices; volunteers heard appeals — unlawful delegation to private actors	Police department retains decision to approve notices; Gatso’s role ministerial; hearing officers act as city agents	Court: No unlawful delegation shown; approval decision remains with police
Preemption by IDOT rules or other administrative law	IDOT rule/location order made City’s enforcement improper	IDOT rules challenged elsewhere; Leaf didn’t preserve claim; IDOT lacked authority for ATE rules per precedent	Court: Preemption claim unpreserved or resolved against Leaf by City of Des Moines v. Iowa Dep’t of Transp.

City of Des Moines v. Iowa Dep’t of Transp., 911 N.W.2d 431 (Iowa 2018) (IDOT lacked authority to promulgate ATE rules)
Lujan v. G & G Fire Sprinklers, Inc., 532 U.S. 189 (U.S. 2001) (when ordinary judicial process is available, it satisfies procedural due process)
Hughes v. City of Cedar Rapids, 840 F.3d 987 (8th Cir. 2016) (upholding similar ATE ordinance against constitutional challenges)
Brooks v. City of Des Moines, 844 F.3d 978 (8th Cir. 2016) (rejecting delegation preemption/related challenges to municipal ATE enforcement)
Davenport v. Seymour, 755 N.W.2d 533 (Iowa 2008) (discussing municipal authority and related procedural points)