When you hear “DUI,” most of us picture a drunk driver behind the wheel of a car. But under Colorado law, the definition of vehicle is broader—and the situations in which you can be charged for driving under the influence are more surprising. Let’s cover some strange scenarios below that could land you in hot water under Colorado law.
To be convicted of an alcohol-related traffic offense, you must be operating a “vehicle” under CRS § 42-4-1301. The statute that defines “vehicle” is CRS § 42-1-102 (112):
“Vehicle” means a device that is capable of moving itself, or of being moved, from place to place upon wheels or endless tracks. “Vehicle” includes, without limitation, a bicycle, electrical assisted bicycle, or EPAMD, but does not include a wheelchair, off-highway vehicle, snowmobile, farm tractor, or implement of husbandry designed primarily or exclusively for use and used in agricultural operations or any device moved exclusively over stationary rails or tracks or designed to move primarily through the air.
So, this can include things like bicycles, and e-scooters and even EPAMDs (electric personal assistive mobility devices). Yes, something like the Rascal scooters in the grocery store.
Notably, under CRS § 42-4-1301.1, the express consent statute uses the term “motor vehicle” not just “vehicle” like the DUI statute. Meaning, you could theoretically be charged with a DUI for a bike or other non-motorized vehicle, but you should not have driver’s license (DMV) consequences as a result.

Sitting in a Parked Car
Even if the car is parked, Colorado can still issue a DUI if you’re in “actual physical control” of the vehicle. That means if you’re in the driver’s seat with keys within reach—even if the engine’s off—law enforcement can charge you. Courts use factors like location of the car, whether seats are occupied, keys in ignition, or even if the heater’s running to determine control.
Avoiding a charge? Move to the back seat, remove keys, and clearly show you aren’t in control. Better yet, don’t even get in a car when you are intoxicated.
Driving a Boat (Boating Under the Influence – BUI)
Colorado—and federal law—treat boats similarly to motor vehicles when it comes to intoxication. While it’s technically called “Boating Under the Influence” (BUI), the principle stands: operating any watercraft while impaired is illegal and can result in penalties akin to a DUI. If you’re imbibing on a boat, you do NOT want to be the person operating/driving the watercraft. I think we’ve all seen it out on the lake where people like to crack open a cold one while they take turns waterskiing. If you are intoxicated, you do not want to get behind the wheel of your boat. Boating under the influence is very dangerous to yourself and others on the water. High speed, heavy equipment and intoxication are a deadly mix. It can be even more dangerous when water is added to the equation. Pick a Designated Driver for your boat, and have safe fun out on the lake.
Riding a Bicycle
Yes, you can absolutely get a DUI on a bike in Colorado. Under CRS § 42‑1‑102(112), “vehicle” includes any device capable of moving a person—including bicycles and e-scooters, but not wheelchairs, snowmobiles or tractors.
A BAC between 0.05% and 0.08% presumptively qualifies as Driving While Ability Impaired (DWAI); 0.08% or more is a DUI. Under‑21 riders face a near zero‑tolerance threshold of just 0.02% BAC.
Consequences? Fines, community service, possible jail, and even driver’s license suspension—particularly if you have prior offenses. Notably, license points are usually assessed only if the device was a motor vehicle, but the offense remains a criminal charge.
I have only seen one DUI on a bike in my career, and it was about 20 years ago. So, they are certainly uncommon. Many officers may not even know the law or might just tell the rider to walk their bike home safely. That is assuming they had a valid reason to stop a bicyclist in the first place.
Ultimately, biking under the influence is a safety issue for the bicyclist and for other vehicles on the road and pedestrians. I know some states have these mobile bar tours where people pedal a moving bicycle “bar” while an employee actually steers the contraption. Are the riders/drinkers simply passengers on this mobile bar? Probably. And I think an argument could be made that they aren’t in control of the vehicle (some states may not consider a bicycle a vehicle, so laws could vary).
Riding a Horse
Interestingly, horses are not considered vehicles under Colorado DUI statutes. That means you cannot be charged with a traditional DUI for riding a horse while intoxicated.
But… that doesn’t mean you’re free from legal consequences. If you’re drunk and riding dangerously, you may face a Class B traffic infraction under CRS § 42‑4‑805—for example, obstructing traffic or otherwise misbehaving—and a fine of $15–$100.
You could also be cited for disorderly conduct, reckless endangerment, or even animal cruelty if you harm or endanger the horse. You could also face city ordinance violations by riding your horse in locations that aren’t allowed. (check local ordinances in your city)
Golf Cart Operation
Even golf carts fall under DUI law in Colorado, assuming they meet the definition of a vehicle—and many do. Because DUI focuses on “vehicles,” not just motor vehicles, riding a golf cart while impaired can result in charges similar to a car DUI.
While specific Colorado case law on golf carts is limited, the statutory language and analogies (e.g., under state DUI rules, bicycles and e‑scooters count) suggest that being impaired in a golf cart could get you charged.
Skateboards (and other human-powered devices)
Skateboards? Possibly. Colorado law defines “vehicle” very broadly—as any device capable of moving a person or property. Some legal commentators argue that even human-powered devices like skateboards may qualify.
However, the “Express Consent” provisions (e.g., license suspension/duties to submit to a test) typically apply only to motor vehicles, not every “vehicle”.
So while a DUI charge for riding a skateboard drunk may be unusual, the broad statutory definitions leave room for interpretation. As I read the language of the definition for vehicle, a skateboard could certainly fit. I’ve never seen a DUI charged on a skateboard, but honestly, the last thing you want is to have to hire an attorney for your “skateboard DUI”. If you do get charged with a strange DUI, call me, let’s figure out some defenses together.
Summary Table
Mode of Operation | Vehicle under DUI Law? | Can You Get a DUI? |
Parked Car (Actual Physical Control) | Yes | Yes |
Boat (Watercraft) | Yes (BUI) | Yes |
Bicycle | Yes | Yes |
Horse | No | No (but other charges possible) |
Golf Cart | Likely Yes | Yes |
Skateboard/Human-Powered Devices | Possibly | Maybe, depending on facts |
Final Thoughts
Colorado’s DUI law is surprisingly expansive. Colorado DUI law revolves around the concept of a vehicle. That means bicyclists, boaters, or anyone operating an entity capable of movement while impaired can face serious charges. In other words, you don’t have to be in a car or truck to get a DUI. Even seemingly innocuous choices, like sleeping in a parked car—or hopping on a golf cart after a few drinks—can lead to criminal consequences. And while horses occupy a unique legal niche, they’re not a guaranteed a break from the law if your conduct endangers others or the animal.
If you are facing DUI or related charges under unusual circumstances, it’s crucial to consult an experienced attorney who understands the nuances of Colorado law. Drive safe, and drink responsibly. But also bike, skateboard, scooter, golf, boat, and even “Rascal” safely.
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