Can You Get a DUI on a Bike in California?

Yes, you can get a DUI on a bike in California. California Vehicle Code section 21200.5 makes it a misdemeanor to ride a bicycle upon a public highway while under the influence of alcohol and drugs, sometimes called cycling under the influence (CUI) or biking under the influence (BUI). The state treats this as a separate offense from a traditional DUI: the maximum fine is $250, there is no blood alcohol content BAC legal limit, and there is generally no loss of driving privileges for adults.

Is a BUI the Same as a Car DUI?

The standard DUI provision (Vehicle Code section 23152) applies to those operating motor vehicles like cars, trucks, and motorcycles with a blood alcohol concentration BAC at or above 0.08%. That rule does not cover bicycles. Instead, § 21200.5 creates a separate, lighter charge where any level of impairment that makes it unsafe to ride can lead to a citation, with no specific threshold required.

Why Are Bikes Treated Differently Than Cars Under California Law?

Under state law, a “vehicle” is defined as a device by which someone or property may be propelled, moved, or drawn upon in a public way. This definition excludes devices moved exclusively by human power. That is why bikes are covered by § 21200.5 (the cycling-specific statute) rather than § 23152 (the general provision for related offenses). If what you are riding is legally treated more like a motorized craft, for example, certain mopeds, an electric scooter, or a motorized scooter that moves without pedaling, the full provision may apply instead.

Does This Apply to E-Bikes?

Yes. The state classifies e-bikes (Class 1, 2, and 3 electric e-bikes) under § 312.5 as different classes of bicycle. E-bikes especially in Class 3 can reach higher speeds, but they are treated the same under the statute. If you ride an e-bike while under the influence, you face the same BUI citation and penalties as someone on a standard pedal bike. Unlike a boat or other recreational craft, e-bikes follow the cycling-specific rules rather than the DUI penalties that apply to drunk driving.

Can You Get a BUI on a Cycling Path or Private Road?

CVC § 21200.5 only applies when riding “upon a highway.” In this state, that term means any public road or street (CVC § 360). It does not include private property, a driveway, parking lots, or paths that are not adjacent to public roads. If you were riding on private property or a separated path when stopped, you may have a valid legal defense. Freeways are also excluded: cycling is prohibited on freeways, so an intoxication charge on a freeway does not typically hold.

What Are the DUI Penalties for Riding While Intoxicated?

A standard car DUI carries both criminal penalties and administrative DMV consequences (license suspension, an ignition interlock device, mandatory DUI school attendance). For a BUI, the DMV track mostly does not apply.

What Happens on a First BUI?

A conviction for riding under the influence is punishable by a fine of up to $250 plus court costs. There is no mandatory jail time. A BUI is a criminal offense and will appear on your criminal record and background checks, which can affect employment. A CUI charge is eligible for expungement after you complete all court-ordered requirements (typically just paying the fine however the fine plus additional fees can add up).

If the incident involved a collision that caused bodily injury to another person, the consequences extend beyond the fines: medical bills, property damage, and liability disputes over who caused the crash.

What Happens If You Get Multiple BUI Citations?

The state has no statutory penalty escalation for repeat BUI offenses. Prosecutors and judges often treat repeat conduct as a sign that the rider will not self-correct, and repeat offending can result in harsher punishment in certain circumstances.

The statute does not clearly define aggravating factors, but additional prosecution is possible in situations such as:

• A crash with injury (which can lead to prosecution beyond the impairment citation and also civil liability)
• Property damage
• Riding into traffic in a way that creates a major hazard
• A child passenger

How Does a BUI Affect Your Future?

If you are between 13 and 21, courts can suspend your license (or delay issuing one) for one year (CVC § 13202.5). A 16-year-old caught riding drunk at night can lose eligibility for a full year.

For adults, there are no DMV points and no suspension. However, a DUI conviction can still create problems with insurance underwriting, background checks, or hiring policies. If you were injured in a crash while under the influence, the insurer might use your impairment to lower your compensation.

A CUI does not count as a “prior” for a car charge. If you are later arrested for drunk driving, a prior CUI will not trigger second-time or third-time penalties. The BUI is a standalone charge that does not contaminate your record for future enhancement. This is the opposite of Florida, where an impaired-riding charge counts as a prior for all future sentencing. The differences between these approaches highlight why understanding your local statute matters.

What Happens If You Ride While Intoxicated?

A stop for riding under the influence can start like any other traffic stop: a swerve across the lane line, running a stop sign, riding without lights at night, or a crash that brings a police officer to the scene. Law enforcement usually focuses on two questions:

• Are you impaired?
• Are you creating a safety risk for yourself or others in traffic?

Some riders get cited and released. Others get arrested, especially when there is a collision, an injury, or unsafe behavior in traffic. In DUI cases like these, the facts of the stop often determine the outcome.

Can Police Give You a Breathalyzer?

Officers can use the same tools used in impairment investigations:

• Observations (odor of an alcoholic beverage, balance issues)
• Questions about drinking
• Field sobriety tests

You might be asked to walk in a straight line, stand on one leg, or follow an object with your eyes. This evidence can be used to establish the elements of the crime.

Cyclists are not legally required to take a chemical test. However, if you believe the assessment is wrong, the person subject to this section may request a chemical test made available by the agency by blood breath test or urine analysis, and one must be performed if requested. This is the opposite of a car DUI, where implied consent means refusing triggers automatic suspension.

What Happens If a Person Is Arrested?

If a person arrested for this violation is formally processed, the steps typically include:

1. Detention and arrest on suspicion of violating § 21200.5
2. Booking (fingerprints, paperwork, and release terms)
3. A court date, with formal charges filed (or sometimes declined) after review

A criminal defense attorney can advise you on defenses at every stage.

Can You Get a DUI on a Bike in Other States?

How each state treats riding under the influence depends on how its statute defines this term. The approach in this state (a separate, lighter provision) is unique.

Even in states where you cannot be charged, you can still face penalties for public intoxication, reckless behavior, and public endangerment. Operating a boat while impaired is a crime in every state.

For the full breakdown, check out our state-by-state analysis.

How Dangerous Is Drunk Cycling?

California remains among the most dangerous states in the US for cyclists. Our accident statistics show 145 cyclist fatalities in 2023, the second-highest in the country. Riders made up 3.6% of all traffic fatalities, higher than the national average of 2.8%.

About 37% of crashes that resulted in rider deaths involved an alcoholic beverage, meaning that impairment was present for the driver and/or the pedalcyclist, as reported by NHTSA. Out of those crashes, 20% involved specifically riding under the influence (with 0.08% or more) or while impaired. In most accidents, all parties were sober.

Even low levels of alcohol impair reaction time and decision-making, which can increase your chances of crashing due to defects on roads or sustaining more severe head injuries. Scooters and other non-motorized or low-speed craft offer no protection in a collision, and riders who travel at higher speeds face even greater risk.

How Do Crash Statistics Compare Nationally?

Nationally, 34% of fatal accidents involved impairment of drivers and/or riders in these situations. In around 18% of those crashes, a rider had measurable impairment. Riding under the influence is not rare in fatal crash data, and it often mixes with impaired driving by motorists. The facts from NHTSA show similar patterns nationally, with differences in state reporting methods making exact comparisons difficult.

How Can You Avoid a BUI?

If you have been drinking, do not ride. Alcohol changes your balance and your confidence in a way that makes bad decisions feel smart. Safer options:

When Should You Consult a Lawyer?

A simple BUI citation may not require legal representation. Contact a criminal defense attorney for a free consultation if you believe the allegations are untrue, the stop or investigation crossed legal lines, or you are facing additional DUI charges. In more complex cases, a lawyer can clarify what defenses apply, especially for driving offenses and related matters that carry heavier penalties.

Hiring an attorney is especially important if you had a collision while under the influence and sustained injuries. If a driver hits you and shifts the blame onto you for being impaired, the pure comparative fault system (Civil Code § 1714) means you can still recover damages, reduced by your percentage of blame. A cyclist found 30% at fault can still recover 70% of their damages. An attorney can determine who is at fault and what your claim is worth. See our guide on accident settlements for how impairment might factor into compensation. Contact us today if you need help evaluating your case.

Posted by Robert Goldwater

Since his academic days at the UC Berkeley School of Law, Robert Goldwater has remained a committed advocate for victims of other people’s negligence. His tort law background, together with his unquenchable thirst for justice, helped young Robert found a now-successful law firm – Bicycle Accident Lawyers Group, gathering same-minded and promising attorneys from all over the country.

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