Idaho Open Container Law (2026): Rules and Penalties

As of September 2026, Idaho law makes it illegal for both the driver and any passenger to drink or possess an open container of alcohol in a vehicle on a public highway, under the state's general open container statute, Idaho Code § 23-505(2).

Jurisdiction scope: This article addresses Idaho's statewide open container law for motor vehicles under Idaho Code § 23-505 and the federal framework in 23 U.S.C. § 154. It does not address Idaho's DUI statute (which supplies the "actual physical control" standard used for penalty purposes), watercraft open container rules, or any local ordinance.

What Idaho's Open Container Law Prohibits

Idaho's operative open container statute is Idaho Code § 23-505(2), which provides that no person in a motor vehicle, while the vehicle is on a public highway or the right-of-way of a public highway, may drink or possess an open container of beer, wine, or liquor. The ban covers both drinking (consumption) and simple possession of an open container, and it applies to the driver and to every passenger, not just the person behind the wheel.

Idaho also has an older, narrower statute, Idaho Code § 23-1333, which bans possession of an open wine container in a vehicle and has not been amended since 1971. That statute predates § 23-505 and covers only wine. Both statutes remain in force. Unlike § 23-505(2), § 23-1333 contains no for-hire-vehicle or recreational-vehicle exception, so on its face a wine container in a taxi or in an RV's living quarters could still be prohibited under § 23-1333 even though § 23-505(2) would permit it. No repeal, preemption case, or Attorney General opinion resolving this conflict was found for this article.

Who the Law Applies To

Idaho's ban applies to "any person" in the vehicle, meaning the driver and every passenger are each individually subject to it. This is a broader rule than some neighboring states, where only the driver's own consumption or possession is restricted by statute.

Exemptions

Idaho Code § 23-505(1) prohibits breaking open, or drinking or using, a container of alcoholic liquor while it is being transported in the vehicle, but it permits an unsealed alcoholic beverage container to be transported in the vehicle's enclosed trunk compartment, or, in a vehicle without a trunk compartment, behind the last upright seat. Two further exemptions apply to specific categories of occupant:

• A passenger, other than the person in actual physical control of the vehicle, may drink or possess an open container in the passenger area of a for-hire vehicle, such as a taxi or limousine.
• A passenger may drink or possess an open container in the living quarters of a recreational vehicle.

Neither exemption extends to the driver or to the person in actual physical control of the vehicle.

Penalties

Idaho ties the penalty to the violator's role in the vehicle rather than setting a single flat offense. The person in actual physical control of the vehicle, defined the same way it is for Idaho's DUI statute (Idaho Code § 18-8004), commits a misdemeanor for violating § 23-505(2). Any other violator, such as a passenger, commits an infraction. Idaho's statute does not specify a dollar fine amount for either violation level within the text reviewed for this article, and this article does not state one.

How Idaho's Law Fits the Federal Rule

Federal law, 23 U.S.C. § 154, conditions a portion of each state's highway funding on having an open container law that meets minimum federal standards. Under 23 CFR § 1270.4, a compliant law must ban both possession and consumption, cover the driver and all passengers, apply on public highways, and be primarily enforced, while still permitting states to allow the trunk, locked-container, for-hire vehicle, and motorhome exemptions described above.

A state without a compliant law has 2.5 percent of certain federal highway funds reserved and redirected to highway safety programs rather than released for ordinary use. FHWA's FY2026 apportionment notice (Notice N4510.905, dated October 1, 2025) lists 12 states as non-conforming for this purpose: Alaska, Connecticut, Delaware, Hawaii, Louisiana, Maine, Mississippi, Missouri, Ohio, Tennessee, Virginia, and Wyoming. Idaho is not one of them. That absence from the list means Idaho's law was not flagged as non-conforming in the FY2026 notice; it is not the same thing as an independent, per-state federal certification of every detail of Idaho's statute.

Disclaimer: This article provides general legal information about open container laws in the United States as of September 2026. It is not legal advice. Open container statutes, exemptions, and penalties change; verify the current text of your state's law before relying on it, and consult a lawyer licensed in your state for advice about a specific situation.

For the federal framework and how every state compares, see the open container laws by state hub. Related reading: Idaho DUI laws and Idaho window tint laws.

Statutes cited reflect their in-force version as of 2026-09-16. Last updated: 2026-09-16.