If you hold a Class A or Class B license and you were just arrested for DUI — in your own car, on your own time — the criminal case is the smaller of your two problems. Here is the larger one.
A first DUI conviction disqualifies your commercial driving privilege for one year. Both Vehicle Code § 15300 and federal regulations require it, and it applies whether you were driving a truck or your personal pickup. There is no restricted commercial license, no work exemption, and no interlock option for commercial driving. For one year you cannot legally operate a commercial motor vehicle.
A second DUI conviction disqualifies you for life. Vehicle Code § 15302. Again, it does not matter what vehicle you were in.
Refusing the chemical test triggers the same one-year disqualification as a conviction. So does a conviction for leaving the scene of an accident, or for evading an officer in a commercial vehicle.
If you were driving a commercial vehicle at the time, the legal limit was 0.04%, not 0.08%. And if the vehicle was placarded for hazardous materials, the disqualification is three years.
None of that happens on arrest. It happens on conviction — which means the criminal case is where your license is won or lost, and the outcome that protects it is not the same outcome that a non-commercial driver would settle for. The rest of this page explains why, and what the strategy looks like.
Two proceedings, two clocks
A DUI arrest starts two separate cases. You have to defend both.
The DMV administrative case. Within ten days of the arrest you must request an administrative per se hearing or the DMV suspends your license automatically — 30 days after the arrest for a first offense. That suspension is of your entire driving privilege, commercial and non-commercial. After a first-offense suspension, a non-commercial driver can usually get a restricted license for work; a commercial driver can get a restricted license only for non-commercial driving. Your commercial privilege stays suspended for the full term. What happens at the hearing and how it can be won is covered in what happens at a DMV hearing for a DUI.
The criminal case. This is where the § 15300 disqualification is decided. The DMV imposes the one-year commercial disqualification when it receives a record of conviction for a listed offense. The criminal case’s outcome — conviction, reduction, or dismissal — is therefore the whole game for your CDL.
What triggers the disqualification, and what does not
Vehicle Code § 15300(a) is a list. The one-year commercial disqualification applies on conviction of:
- Driving under the influence under § 23152 or § 23153, in any vehicle.
- Driving a commercial vehicle with a blood-alcohol level of 0.04% or more.
- Leaving the scene of an accident.
- Using a vehicle in the commission of a felony.
- Refusing or failing to complete a chemical test under § 23612.
- Evading an officer under § 2800.1, § 2800.2, or § 2800.3 in a commercial vehicle.
- Driving a commercial vehicle while your commercial privilege is suspended or disqualified.
- Causing a fatality through negligent or criminal operation.
The list matters because of what is not on it. A conviction for reckless driving under § 23103 entered under § 23103.5 — the “wet reckless” — is not a conviction under § 23152, and it is not on the § 15300 list. That is why, for a commercial driver, the negotiation in a DUI case is not about the fine or the length of the DUI program. It is about the section number on the conviction.
I want to be careful here. A wet reckless is not a free pass. It is a priorable offense — if you are arrested for DUI again within ten years, it counts as a prior DUI for sentencing. It carries a DUI program, probation, and a fine. And commercial carriers and their insurers read driving records; a § 23103.5 notation on a commercial driver’s record is not invisible. But it does not carry the § 15300 one-year disqualification that a § 23152 conviction does, and for a driver whose livelihood is the license, that is the difference that matters.
Whether a wet reckless is achievable depends on the evidence. A blood-alcohol result near the limit, a stop with problems, a chemical test with timing or calibration issues, or field sobriety tests administered poorly are the facts that produce that outcome. Which is why the defense of the DUI itself — the same defenses any driver has — matters more for a commercial driver, not less.
The DUI defenses are the same; the stakes are not
Every defense available in an ordinary DUI case is available here.
The stop has to have been lawful. The field sobriety tests are voluntary and their results are only as good as the conditions and the officer’s administration; you were never required to take them. The breath or blood test is subject to challenge on calibration, chain of custody, timing relative to driving, and the rising-blood-alcohol problem. The objective symptoms the officer reports — odor, red eyes, slurred speech — have innocent explanations that a jury has to consider. I cover the full set in how to challenge evidence in a DUI case.
What changes for a commercial driver is the decision about what to do with those defenses. A non-commercial first offender with a 0.09% result and a clean stop will often take a standard first-offense plea because the alternative — trial — has a cost and the plea outcome is manageable. A commercial driver in the same position has a year of income on the other side of the ledger, and possibly a career if there is ever a second arrest. The case is worth fighting harder, and the negotiating target is different.
If you were driving the commercial vehicle
Two additional issues apply if the arrest happened while you were operating a commercial motor vehicle.
The 0.04% limit. Vehicle Code § 23152(d) makes it a DUI to drive a commercial vehicle with a blood-alcohol level of 0.04% or more — half the ordinary limit. A result that would be a non-issue in a passenger car is a DUI charge in a commercial vehicle.
The out-of-service order. Federal rules require an officer who detects any measurable alcohol in a commercial driver to place the driver out of service for 24 hours, even below 0.04%. That is not a criminal charge, but it is reported and it is the kind of thing carriers act on.
The § 15300 disqualification is the same one year whether the arrest was in a commercial vehicle or a personal one. Hazardous materials transport at the time of the offense raises it to three years.
Refusal is a disqualification by itself
If you refused the chemical test after arrest, § 15300(a) treats the refusal as a disqualifying event on its own — one year — independent of whether the DUI is ever proven. The DMV also imposes a longer administrative suspension for a refusal than for a failed test. The implied consent law is the same for commercial drivers, but the consequence of refusing is heavier. A refusal case is defended on whether the officer gave a proper admonition and whether what happened was actually a refusal — those are real defenses, and they are raised at the DMV hearing and in court.
Your employer, the Clearinghouse, and your record
Three things commercial drivers ask about, in order of how often I hear them:
Do I have to tell my employer? Federal rules require you to notify your employer of any traffic conviction other than parking within 30 days, and of any license suspension, revocation, or disqualification by the end of the next business day. Notifying your employer of an arrest is a matter of your employment agreement, not the regulations. Carriers pull motor vehicle records at least annually, and a DUI conviction or an administrative suspension will appear on yours.
Does this go in the FMCSA Clearinghouse? A police DUI arrest or conviction is not itself a Clearinghouse entry. The Clearinghouse records DOT drug and alcohol testing violations — a positive DOT test, a refusal of a DOT test, or an actual-knowledge report by an employer. If your employer directs a post-incident DOT test and you refuse or fail it, that is a Clearinghouse violation on top of everything else. The DUI conviction reaches your carrier through the motor vehicle record instead.
Can the conviction be cleaned up later? A DUI conviction can be dismissed under Penal Code § 1203.4 after probation, and I explain that process in can you expunge a DUI conviction in California. But the § 15300 disqualification is a DMV action tied to the conviction date, and a later dismissal does not shorten it or remove it from the DMV record for CDL purposes. The time to protect the license is before the conviction, not after.
What a first-offense criminal sentence looks like
Apart from the license, the criminal sentence for a first-offense misdemeanor DUI is the same for a commercial driver as for anyone else: informal probation of three to five years, a fine in the range of $390 to $1,000 plus assessments, a three- or nine-month DUI program depending on blood-alcohol level, and — in Riverside County — typically no custody time on a first offense without aggravating facts. I cover the standard framework in first-time DUI in California. Where a commercial driver’s sentence differs is only in the collateral consequence, and that consequence dwarfs the sentence.
Your case at the Southwest Justice Center
A misdemeanor DUI arising anywhere in Southwest Riverside County — Murrieta, Temecula, Menifee, Wildomar, Lake Elsinore, Winchester, Canyon Lake, or French Valley — is heard on the misdemeanor calendar in Department S-104 at the Southwest Justice Center. In most misdemeanor DUI cases I can appear for you under Penal Code § 977 so you are not losing work days to court. The I-15 and I-215 corridors and the logistics employment around them mean commercial drivers are a regular part of that calendar, and the DA’s office is familiar with the CDL issue; it is raised in negotiation, not discovered at sentencing.
The sequence is: DMV hearing request within ten days; arraignment; discovery and review of the stop, the tests, and the chemical result; negotiation aimed at a disposition that is not on the § 15300 list; and, if that is not available on the evidence, a decision about trial made with the full cost of a conviction on the table.
Frequently asked questions
Will I lose my CDL for a DUI in my personal car? Yes, on conviction. The one-year disqualification under § 15300 applies to a DUI conviction in any vehicle. A second conviction is a lifetime disqualification.
Can I get a restricted commercial license during the disqualification? No. Restricted licenses after a DUI are available only for non-commercial driving. There is no work restriction, interlock restriction, or hardship exception for commercial driving.
Does a wet reckless protect my CDL? A wet reckless (§ 23103 per § 23103.5) is not on the § 15300 list of disqualifying convictions. It is still a priorable DUI-related offense with a program and probation, and it appears on your driving record. Whether it is available depends on the evidence in your case.
What is the legal limit for a commercial driver? 0.04% when operating a commercial motor vehicle. 0.08% in a personal vehicle. Any detectable alcohol in a commercial vehicle results in a 24-hour out-of-service order.
How long is the disqualification if I was hauling hazardous materials? Three years for a first offense.
Does the DUI go into the FMCSA Clearinghouse? Not by itself. The Clearinghouse records DOT drug and alcohol testing violations, not police DUI arrests or court convictions. Your carrier will see the conviction on your motor vehicle record.
What to do now
Request the DMV hearing. That is a ten-day deadline from the arrest and it is lost if missed. Then get the police report and the chemical test result in front of someone who can tell you whether the case has the kind of problems that produce a non-§ 23152 outcome — because that, not the fine or the program, is what determines whether you are driving commercially next year.
I have been handling DUI cases at the Southwest Justice Center since 1999, and commercial drivers are among the clients for whom the difference between a standard plea and a negotiated reduction is measured in a year of income. If you want to know where your case stands, call (951) 400-4357 for a free consultation.
