# Iowa HF 181: A bill for an act prohibiting open containers of beverages containing tetrahydrocannabinol in the passenger area of motor vehicles on highways, and making penalties applicable. (Formerly HSB 29.) Effective date: 07/01/2025.

Iowa HF 181, A bill for an act prohibiting open containers of beverages containing tetrahydrocannabinol in the passenger area of motor vehicles on highways, and making penalties applicable. (Formerly HSB 29.) Effective date: 07/01/2025., is a 91st General Assembly (2025–2026) House bill sponsored by COMMITTEE ON PUBLIC SAFETY; status signed, last action 2025-03-28 (Signed by Governor.) (as of 2026-10-18).

- Canonical: https://policyrisk.com/state-bill/IA-HF181-2025-2026
- As of: 2026-10-18
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: Iowa HF 181
- State: Iowa
- Session: 91st General Assembly (2025–2026)
- Title: A bill for an act prohibiting open containers of beverages containing tetrahydrocannabinol in the passenger area of motor vehicles on highways, and making penalties applicable. (Formerly HSB 29.) Effective date: 07/01/2025.
- Status: signed
- Chamber: House
- Introduced: 2025-01-30
- Last action: 2025-03-28, Signed by Governor.
- Sponsor: COMMITTEE ON PUBLIC SAFETY
- Cosponsors: 0
- Touches household money: no
- Roll calls: 2 (134 yes, 1 no in all)
- Economic provisions PRIA read: 2

## Summary

No summary available.

## Bill overview: provisions PRIA read

- Underage alcohol penalties exclude THC-only possession: benefit, low. Beginning July 1, 2025, the underage alcohol penalty tied to Iowa's vehicle open-container rules applies only to alcohol possession. A person under 21 does not trigger that specific penalty by possessing a THC drink alone. This does not exempt THC drinks from the vehicle open-container ban.
- Open THC drinks restricted inside vehicles: cost, low. Beginning July 1, 2025, Iowa's vehicle open-container ban covers drinks containing any amount of THC, alongside alcohol. Drivers and passengers on public streets or highways cannot possess open or unsealed drinks in the passenger area. This includes seating areas, the glove compartment, and places…

## Sponsors and cosponsors

- Sponsor: COMMITTEE ON PUBLIC SAFETY

## Roll call votes

| Date | Chamber | Motion | Result | Yes | No | Other |
| --- | --- | --- | --- | --- | --- | --- |
| 2025-03-12 | Senate | Passed Senate | pass | 48 | 0 |   |
| 2025-03-10 | House | Passed House | pass | 86 | 1 |   |

## Actions (12)

- 2025-03-28: Signed by Governor. (House)
- 2025-03-28: Reported correctly enrolled, signed by Speaker and President, and sent to Governor. (House)
- 2025-03-18: Explanation of vote. (House)
- 2025-03-12: Message from Senate. (House)
- 2025-03-12: Immediate message. (Senate)
- 2025-03-12: Passed Senate, yeas 48, nays 0. (Senate)
- 2025-03-12: Substituted for SF 392. (Senate)
- 2025-03-10: Read first time, attached to SF 392. (Senate)
- 2025-03-10: Message from House. (Senate)
- 2025-03-10: Immediate message. (House)
- 2025-03-10: Passed House, yeas 86, nays 1. (House)
- 2025-01-30: Introduced, placed on calendar. (House)

## Bill text

- As Introduced: [PDF](https://www.legis.iowa.gov/docs/publications/LGI/91/HF181.pdf)
- Enrolled: [PDF](https://www.legis.iowa.gov/docs/publications/LGE/91/HF181.pdf)

## Related bills

- HF 2801: A bill for an act modifying the major economic growth attraction program, and including effective date provisions. (Formerly HSB 785.) Effective date: 10/02/20… (signed)
- SF 2472: A bill for an act relating to state and local government taxes, fees, financial authority, and budgets, by modifying property assessment provisions, divisions… (signed)
- HF 2601: A bill for an act relating to campaign finance, including participation in ballot issue campaigns by foreign nationals and investigations of election misconduc… (signed)
- SF 2471: A bill for an act relating to fees for lifetime fur harvester licenses. (Formerly SF 2317, SSB 3121.) Effective date: 07/01/2026. (signed)
- SF 2399: A bill for an act relating to bail and bond amounts and conditions. (Formerly SSB 3162.) Effective date: 07/01/2026. (signed)
- SF 2299: A bill for an act relating to the district-to-community college sharing or concurrent enrollment program. (Formerly SF 2176.) Vetoed 6-2-26. (vetoed)

## Sources
- [As Introduced (PDF)](https://www.legis.iowa.gov/docs/publications/LGI/91/HF181.pdf)
- [Enrolled (PDF)](https://www.legis.iowa.gov/docs/publications/LGE/91/HF181.pdf)

## Related
- [HF 2801: A bill for an act modifying the major economic growth attraction program, and i…](https://policyrisk.com/state-bill/IA-HF2801-2025-2026)
- [SF 2472: A bill for an act relating to state and local government taxes, fees, financial…](https://policyrisk.com/state-bill/IA-SF2472-2025-2026)
- [HF 2601: A bill for an act relating to campaign finance, including participation in ball…](https://policyrisk.com/state-bill/IA-HF2601-2025-2026)
- [SF 2471: A bill for an act relating to fees for lifetime fur harvester licenses. (Former…](https://policyrisk.com/state-bill/IA-SF2471-2025-2026)
- [SF 2399: A bill for an act relating to bail and bond amounts and conditions. (Formerly S…](https://policyrisk.com/state-bill/IA-SF2399-2025-2026)
- [SF 2299: A bill for an act relating to the district-to-community college sharing or conc…](https://policyrisk.com/state-bill/IA-SF2299-2025-2026)
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Source: PRIA, https://policyrisk.com/state-bill/IA-HF181-2025-2026 (as of 2026-10-18).