Open container laws in Wyoming vehicles are straightforward once you understand them, but the consequences of violating them are real and can compound quickly if the stop involves other factors.

The Law: What Wyoming Statute Governs Open Containers in Vehicles

Wyoming Statute § 31-5-235 prohibits any driver or passenger from possessing an open alcoholic beverage container in the passenger area of a motor vehicle on a public street or highway.

The statute covers the passenger compartment, which is the area designed for the driver and passengers, and applies while the vehicle is on a public road. A sealed, unopened container is not a violation. The issue arises when a container has been opened, regardless of whether any alcohol was consumed from it.

The statute applies to all vehicles, not just those driven by someone who is impaired.

What Counts as an Open Container Under Wyoming Law

A container is considered open if the seal has been broken or if the container is otherwise uncapped, unsealed, or partially consumed.

An alcoholic beverage in a cup, a wine bottle with a broken seal, or a can that has been opened all qualify. The fact that the container currently appears full, or that very little was consumed, does not change the analysis.

Wyoming law also addresses where the container is located.

Who the Law Covers: Drivers, Passengers, and Tourists

One common misconception is that the open container law only applies to the person driving.

Wyoming Statute § 31-5-235 covers both drivers and passengers. A sober driver can receive a citation because of an open container held by a passenger. A passenger can be cited independently.

When a group is traveling through Wyoming after a festival, a concert, or a Fourth of July celebration, any open beverage in the passenger area creates a legal issue for everyone in the vehicle.

Tourists are particularly likely to run into this issue because open container rules vary significantly from state to state. Some states permit passengers, though not drivers, to possess open containers. Others have different rules depending on vehicle type, road type, or municipal ordinances.

How Open Container Violations Intersect with DUI Investigations

An open container violation on its own carries a financial penalty, but the more serious concern for most drivers is what the open container discovery does to the dynamic of a traffic stop.

Under Wyoming Statute § 31-5-233, driving or having actual physical control of a motor vehicle while impaired is a criminal offense. An open container does not prove impairment, but it gives law enforcement a basis to investigate further.

Officers who encounter an open container during a routine stop are legally positioned to ask additional questions, request field sobriety tests, or pursue chemical testing if their observations suggest impairment may be present. The container itself becomes a piece of documentation in the officer’s report. If the stop later results in a DUI investigation, the open container adds context that prosecutors have access to.

Wyoming’s Open Container Rules and Federal Highway Requirements

Federal law requires states to adopt open container restrictions that meet federal standards or face reductions in certain highway funding allocations. Wyoming’s statute satisfies those federal requirements.

The federal standards require that the law cover all occupants, apply to the passenger area of the vehicle, and cover public roads. Wyoming’s approach is consistent with these requirements, which is why the rules apply uniformly across the state rather than varying by county or city.

This federal framework also explains why open container laws in Wyoming vehicles tend to be enforced consistently by different law enforcement agencies. Whether a stop is made by the Wyoming Highway Patrol, a county sheriff’s deputy, or a municipal officer, the same statute applies.

Common Scenarios That Lead to Open Container Citations in Wyoming

Driving Between Events

Wyoming hosts numerous summer events, including rodeos, fairs, music festivals, and outdoor celebrations. Visitors often travel between venues or back to lodging after attending these events. Open containers left in the vehicle, forgotten in a bag, or held by passengers during the drive create exposure that might not have been considered during the event itself.

Road Trips Through Wyoming

Long stretches of scenic highway make Wyoming a popular road trip corridor. Travelers who bring along beverages for the drive, or who opened a bottle at a rest stop and kept it in the vehicle, may not realize the container is creating a legal issue for the entire drive through the state.

Camping and Recreation Transitions

Wyoming’s outdoor recreation areas draw visitors who carry coolers, beverages, and camping supplies. Moving between a campsite and a public road with open containers in the vehicle creates the same exposure. The open container law applies on public highways, and transitioning from a private or recreation area to a public road brings the statute into effect.

Practical Steps to Avoid Open Container Problems in Wyoming

The simplest way to avoid an open container citation in Wyoming is to keep any alcoholic beverage that has been opened secured in the trunk, or in a sealed bag in a cargo area behind the last row of seats if no trunk is available.

Once a container is sealed back up, the situation is different, though what began as an open container does not always resolve cleanly depending on what law enforcement already observed.

Planning for these logistics before a group gets into a vehicle is far easier than managing the consequences of a citation or a more involved investigation afterward.

What to Do After an Open Container Citation or a Stop That Escalated

An open container citation may seem minor in the moment, but it creates a record. If the stop escalated and resulted in a DUI investigation, the open container documentation becomes part of that case.

Wyoming Statute § 31-6-102 governs the implied consent process for chemical testing, and the decisions made during and immediately after the stop can affect what happens in both an administrative license proceeding and any criminal case.

If a stop resulted in anything beyond a standard open container ticket, speaking with Wyoming legal counsel before any deadlines pass is worth doing promptly.

Frequently Asked Questions About Open Container Laws in Wyoming Vehicles