{"data":{"id":"us-ia/iowa-code-321.4","jurisdiction":"us-ia","citation":"Iowa Code § 321.4","heading":"Rules.","body":"The commissioner of public safety is authorized to adopt and promulgate administrative rules governing procedures as may be necessary to carry out the provisions of this chapter; and to carry out any other laws the enforcement of which is vested in the department of public safety.","path":["Title VIII - TRANSPORTATION (Ch. 306 - 330B)","Chapter 321 - MOTOR VEHICLES AND LAW OF THE ROAD"],"source_url":"https://www.legis.iowa.gov/docs/code/2026/321.4.pdf","current_through":"Iowa Code 2026 edition","vintage":"","retrieved_at":"2026-09-14T19:40:08Z","sha256":"5113142c2d5e0f50aa2639143eb94a6999b4f8a0370b18bb6362c3c599f1fce5","source_id":"us-ia","stale":false,"prev":"us-ia/iowa-code-321.3","next":"us-ia/iowa-code-321.5"},"notice":"GroundRules: Original legal text. Not legal advice."}