David J. Muñoz | August 24, 2025 | DUIs

Drunk driving laws are tough–and for good reason–but the terminology used to describe impaired driving offenses can be confusing. Whether you’re seeing “DUI,” “DWI,” or “DWAI” on court documents, news articles, or insurance policies, you might wonder what these acronyms really mean—and how they differ from each other.

Here’s what you need to know about the terms and their applicability to California residents. 

What is a DUI? 

DUI stands for “Driving Under the Influence.” It’s one of the most commonly used terms for impaired driving in the U.S. A person can be charged with a DUI for driving under the influence of alcohol, drugs (including prescription medications), or a combination of both.

Many states, including California, use the DUI label. In California, you’re considered legally intoxicated if your blood alcohol concentration (BAC) is 0.08% or higher. However, you can still be charged with DUI even if your BAC is below that limit, especially if drugs are impairing your ability to drive safely.

What is a DWI? 

DWI can mean “Driving While Intoxicated” or “Driving While Impaired,” depending on the state. In some states, DUI and DWI are interchangeable. In others, DWI might refer to a more severe level of impairment or strictly to alcohol-related offenses.

For example, in Texas, DWI is the standard term for drunk driving, while DUI might apply to underage drivers with any detectable alcohol.

What is a DWAI?

DWAI, or “Driving While Ability Impaired,” is used in a handful of states like New York and Colorado. It typically refers to driving while slightly impaired—even if your BAC is below the legal limit.

In New York, a DWAI might be charged if your BAC is between 0.05% and 0.07%. It’s considered less severe than a DUI or DWI, but it still carries consequences like fines, license suspension, and possible jail time.

Key Differences Between DUI, DWI, and DWAI

To better understand how these terms compare, here’s a quick breakdown of their differences:

• DUI (Driving Under the Influence): The most common term; applies to alcohol, drugs, or both. It is the official charge here.
• DWI (Driving While Intoxicated/Impaired): Used in some states, sometimes interchangeable with DUI.
• DWAI (Driving While Ability Impaired): Recognized in a few states, usually for lower BAC levels.

While each acronym has its own meaning, the important distinction is that in California, DUI is the single term used for all forms of impaired driving.

California’s Driving Under the Influence Laws

In California, the legal limit for most adult drivers is a blood alcohol concentration (BAC) of 0.08%. However, several additional rules apply depending on the driver’s age, license type, and situation:

• Drug impairment: This includes illegal substances, prescription medication, or even certain over-the-counter drugs.
• Zero tolerance for under-21 drivers: A BAC of 0.01% or higher can trigger charges.
• Commercial drivers: Held to a stricter standard with a 0.04% BAC limit.

In addition, California enforces implied consent laws, requiring drivers to submit to chemical testing when lawfully arrested. Refusing the test can result in an automatic license suspension and additional penalties.

What Are the Penalties for Driving Under the Influence in California?

The consequences of a DUI conviction vary based on circumstances and prior history. Common penalties include:

• First offense: Fines, probation, license suspension, DUI education, and possible jail time.
• Repeat offenses: Longer suspensions, mandatory ignition interlock devices, higher fines, and more jail time.
• Aggravating factors: Accidents, injuries, or very high BAC levels can bring enhanced punishment.

No matter the details, DUI convictions leave lasting consequences, from higher insurance premiums to a permanent criminal record.

What To Do if an Intoxicated Driver Injures You

Being hit by a drunk or drug-impaired driver can change your life in an instant. If you were injured, it’s important to act quickly to protect your health, your rights, and your potential injury claim. 

Here are the steps you should take:

• Call 911 immediately: Report the crash and request medical assistance. Law enforcement will investigate and likely perform field sobriety tests or breathalyzer testing on the impaired driver, which can be critical to your case.
• Seek medical attention: Even if your injuries seem minor, get checked out. Some serious conditions, like internal injuries or traumatic brain injuries, aren’t always immediately visible.
• Document everything: Take photos of the crash scene, vehicle damage, and your injuries. If there are witnesses, get their names and contact information.
• Do not discuss fault: Avoid making statements about who was at fault to the other driver or their insurance company. Let the facts—and your lawyer—speak for you.
• Contact a personal injury lawyer: A DUI-related accident often involves both criminal and civil components. An attorney can handle the insurance claims process and help you seek compensation for medical bills, lost wages, and pain and suffering.

Acting fast is critical. The sooner you get legal guidance, the stronger your case may be.

Contact the Car Accident Law Firm of Mission Personal Injury Lawyers Today To Get More Information

After a crash caused by an intoxicated driver, you may be overwhelmed with physical pain, emotional trauma, and financial stress. A San Diego DUI accident lawyer can be your strongest advocate during this time. While the legal process can be complex, having the right attorney by your side can make all the difference. With skilled representation, you can focus on healing while your lawyer handles the fight for justice and accountability.

For help and to learn more about seeking compensation if you are injured in a DUI accident in California, contact Mission Personal Injury Lawyers. We offer a free consultation.

If you’ve been injured in San Diego or Chula Vista, please call Mission Personal Injury Lawyers for a free case evaluation with a personal injury lawyer or contact us online.

We proudly serve San Diego County and throughout California.

Mission Personal Injury Lawyers – San Diego Office
3666 Fourth Ave, San Diego, CA 92103
(619) 777-5555

Mission Personal Injury Lawyers – Chula Vista Office
690 Otay Lakes Rd #130, Chula Vista, CA 91910
(619) 722-3032

We also serve the state of Texas. For legal assistance, contact our personal injury law office in El Paso today.
Mission Personal Injury Lawyers – El Paso Office
201 E Main Suite 106, El Paso, Texas 79901
(915) 591-1000