A lot of what people believe about DUIs comes from television, from a friend's story, or from a confident voice at a party. Some of it is harmless. Some of it leads people to make decisions that hurt their case before they ever talk to a lawyer. I am Joel Brand, and I defend DUI cases across California. Here are nine of the most common California DUI myths I hear, and what the law actually says.
Myth 1: Coffee, water, or time will sober you up before you drive
Only one thing lowers your blood alcohol level, and that is time, at a rate your body controls. Coffee, a cold shower, fresh air, and a big meal can make you feel more alert, but they do not speed up how fast alcohol leaves your system. Worse, your blood alcohol can still be rising after you stop drinking, so you can be higher at the roadside than you were when you left. That rising-alcohol effect is actually a recognized defense issue, which I explain in the rising BAC defense. Feeling fine is not the same as being under the limit.
Myth 2: You have to do the roadside field sobriety tests
The walk-and-turn, the one-leg stand, and the follow-my-pen eye test are voluntary for most drivers. They are not designed to help you. They are designed to gather evidence against you, and they are scored on subtle clues that are easy to fail even when sober. You can decline these roadside tests, and many people are surprised to learn that. I break down how they work, and how flawed they are, in refusing field sobriety tests and the walk-and-turn test.
Myth 3: The little handheld breath device at the roadside is mandatory
People confuse two very different breath tests. The small handheld device used at the roadside, called a PAS, is generally optional for adult drivers who are 21 or older and not already on DUI probation. The evidentiary test you are asked to take after a lawful arrest is a different matter, because California's implied consent law requires it, and refusing that one carries its own penalties. The distinction is important and widely misunderstood, so read the chemical test refusal rules and post-arrest refusal before you assume either way.
Myth 4: A breath test result is unbeatable
Breath machines are not infallible. They have to be properly calibrated and maintained, the officer has to follow a specific observation and operation procedure, and conditions like residual mouth alcohol, certain medical issues, or a recent burp can throw off a reading. A number on a printout is evidence, not the final word. I cover two of the most common challenges in the bad calibration defense and the mouth alcohol defense.
Myth 5: If I was under 0.08, I cannot be charged
The 0.08 percent limit is not a safe harbor. You can still be charged with driving under the influence under Vehicle Code 23152(a) if an officer concludes you were actually impaired, even with a lower number, and that charge reaches drugs as well as alcohol. Drivers under 21 are held to a zero-tolerance standard where almost any measurable alcohol is a problem, which I explain in underage DUI and zero tolerance. The number matters, but impairment, not just the number, is what the law reaches.
Myth 6: A first DUI is no big deal
A first DUI is a criminal misdemeanor, not a traffic ticket. Even a first offense can mean probation, an alcohol program, fines and heavy court assessments, an ignition interlock requirement, and a license suspension, on top of insurance and background-check consequences that last for years. None of that is meant to scare you, only to correct the idea that you can shrug it off. The real picture is laid out in the legal consequences of a first-time DUI.
Myth 7: I was just sitting in a parked car, so it cannot be a DUI
Whether you can be charged for sitting in a stopped or parked car depends on the facts, and it is more complicated than people assume. California requires actual driving for a DUI conviction, but officers and prosecutors often build a circumstantial case from things like a warm hood, the keys in the ignition, or your own statements. This cuts both ways, because the lack of proof that you drove can be a defense. I cover both sides in sleeping in your car and the no-driving defense.
Myth 8: You cannot get a DUI on legal prescription medication or cannabis
Legal does not mean safe to drive on. You can be charged with a DUI for driving while impaired by a prescription drug you took exactly as directed, or by cannabis, because the law is about impairment, not whether the substance is legal. Because there is no simple per se limit for most drugs, these cases turn on contestable evidence of impairment. See how prescription drugs affect your DUI defense and marijuana DUI in California.
Myth 9: DUIs cannot be won, so I might as well plead guilty
This is the myth that costs people the most, because it leads to giving up before anyone has looked at the evidence. DUI cases are challenged and reduced all the time, on the stop, the testing, the procedure, and the strength of the proof. Pleading guilty at the first court date throws away every one of those opportunities. Before you decide your case is hopeless, read the top California DUI defenses and how a charge can sometimes be reduced to a lesser offense.
The takeaway
The common thread in all of these myths is that they push you toward doing nothing or giving up. The reality is that a DUI is serious, the evidence is challengeable, and the early decisions matter. If you want a clear, honest read on your own situation instead of party-wisdom, get a free written case analysis below, or call me directly at (888) 271-6644. I answer my own phone, 24/7. You can also read more from the DUI blog.