Opting to get home by bicycle after a night of drinking may seem like the safe choice compared to getting behind the wheel of a car, but in California this decision could still come with legal consequences in addition to putting your safety and others at risk.
Alcohol raises the chances of a bicycle accident by about 400%, according to data from the U.S. Department of Transportation. Additionally, the same report shows that about 15% of bicycle injuries involve the cyclist having consumed alcohol.
Just like in cars, operating a bicycle under the influence often comes with impaired judgement, higher speeds, and usually the risk for more mistakes. These mistakes can be dangerous, deadly, and even when nobody is hurt, they can come with a legal penalty.
The bottom line is that getting on a bicycle as an alternative to getting behind the wheel is not always safer or without consequences.
Here’s what cyclists in California should know about the law when they’ve consumed alcohol.
Understanding California’s law
Newcomers to California may not suspect that they’re doing anything wrong when they hop on a bicycle after a fun night out. Afterall, the law in California is not the same as it is in other places across the country. Laws differ greatly from state to state.
In some states, including California, bicycles are not part of the vehicle DUI law, but have a separate statute that dictates what is legal and what is not. In California, this is a CUI, cycling under the influence, and is classified as a misdemeanor.
In other states, bicycles may be considered a vehicle under the main DUI law and cyclists may face similar punishments as those who operate a vehicle under the influence (Colorado, D.C., Florida, and others) or there may be no law governing DUIs and cycling at all (Michigan, Maine, and New Jersey are among the states that fall into this category).
In California, the penalty for operating a bicycle under the influence of alcohol or drugs is a maximum $250 fine, and no jail time. This differs significantly from the DUI law for vehicle operators. In California, a vehicle DUI may come with larger fines, points against the driver’s license, and, depending on the offense, jail time.
The law does direct that a chemical test be made available to the cyclist if the cyclist asks for it. However, there is no determined blood alcohol concentration (BAC) level in the CUI law like there is in the DUI law, so punishment may be on a case-by-case basis.
“…Any person arrested for a violation of this section may request to have a chemical test made of the person’s blood, breath, or urine for the purpose of determining the alcoholic or drug content of that person’s blood pursuant to Section 23612, and, if so requested, the arresting officer shall have the test performed,” the law says.
California’s law is statewide, so it applies to all cities. The legal consequences for cycling under the influence are the same in San Francisco, Los Angeles, San Diego, and everywhere in between – but by having no designated BAC or legal limit, courts and police have been known to differ on the penalties. What might be a warning in Oakland or San Jose might be a ticket elsewhere and vice versa.
If a cyclist under the influence is involved in a crash, there may be other penalties or legal implications.
Does BAC matter?
Often, news stories capture the tragedies cyclists face when a person gets behind the wheel, but those same stories can translate to cyclists and pedestrians.
On Aug. 27, 2025 a San Jose woman was hit by a cyclist who, police say, was suspected of being under the influence and days later died from the injuries sustained during the crash. These kinds of incidents may result in higher legal action than a $250 fine and more significant consequences for the cyclist.
It’s a reminder to all that what starts as a way to minimize harm by avoiding the driver’s seat after a night of drinking can actually be a detriment to safety for roadusers of all kinds.
In California DUIs, the BAC is .08%, which often indicates a person lacks speed control, has impaired perception, and has reduced information processing capabilities. Reaching this rate, of course, all depends on the amount of alcohol consumed and how it metabolizes in a person. This is again why it’s important to play it safe. Two cocktails over the course of a happy hour for one person may manifest much differently than another.
Even with a lower BAC, like .05%, a person can start to show signs of impairment. Federal research shows that this level of BAC can lead to reduced coordination, difficulty steering, and reduced response to emergency situations.
While the CUI law doesn’t have a designated BAC indicated, it still matters when considering the implications alcohol has on decision making and perception.
Involved in a CUI or under the influence during a crash?
Whether you’re involved in a crash or not while cycling under the influence, it can be beneficial to seek out a legal expert to guide you through the process. In many CUI cases, the $250 fine is clear cut, but if there are other implications, the process can quickly become complex. This is especially true when alcohol is involved in a crash.
Bay Area Bicycle Law is the only northern California personal injury law firm to focus solely on legal matters that pertain to cyclists, so they know the nuances that may accompany a case, a cyclist’s rights, and the options available to a cyclist. Using a specialist has several benefits, including knowledge of the law and how it pertains to cyclists.
To get your free consultation with a specialist in bicycle-related legal matters, reach out today. Call (414) 466-8717 or visit the Bay Area Bicycle Law website.