In California, driving under the influence of alcohol or drugs is a criminal offense. The legal term used in the state is DUI, which stands for Driving Under the Influence.
A person can be charged if their blood alcohol concentration (BAC) is 0.08% or higher, or if they are impaired by drugs.
Many people ask about the difference between a DWI and a DUI, but in California, the law mainly uses the term “DUI.” California takes impaired driving very seriously. Police officers actively look for signs of drunk or drugged driving.
If you are stopped and arrested, you may face both criminal penalties and action from the Department of Motor Vehicles (DMV). Because of this, it is important to understand how these laws work.
DUI vs. DWI in California
In some states, DWI (Driving While Intoxicated) and DUI are separate charges. However, in California, DUI is the standard term used in the law. The state does not officially use DWI as a separate offense.
Still, the meaning is similar. Both terms generally refer to driving while impaired by:
- Alcohol
- Illegal drugs
- Prescription medication
- Over-the-counter drugs that cause drowsiness
So, even if people use the words differently, the legal focus in California is on DUI.
Legal BAC Limits
Now that we understand the terminology, it helps to look at the legal limits.
In California, the BAC limits are
- 0.08% for drivers age 21 and older
- 0.04% for commercial drivers
- 0.01% for drivers under 21
The state also follows a “zero tolerance” policy for underage drivers. This means even a small amount of alcohol can lead to penalties.
It is also important to know that you can be charged with a DUI even if your BAC is below 0.08%. If an officer believes your driving is impaired, you may still face charges.
DUI Involving Drugs
DUI laws in California do not only apply to alcohol. You can also be arrested for driving under the influence of drugs (DUID). This includes:
- Marijuana
- Cocaine or other illegal drugs
- Prescription painkillers
- Anxiety medication
- Sleep aids
Even if you have a valid prescription, you can still be charged if the drug affects your ability to drive safely.
What Happens After a DUI Arrest?
After an arrest, two separate processes usually begin:
- Criminal Court Case
- DMV Administrative Action
The criminal court handles fines, jail time, and probation. The DMV handles license suspension. You only have a short time, usually 10 days, to request a DMV hearing to challenge the suspension.
Because of these two processes, DUI cases can move quickly.
Penalties for a First DUI
The penalties depend on your record and the facts of the case. For a first offense, possible penalties may include:
- Fines and court fees
- DUI education classes
- Probation
- License suspension
- Possible jail time
The court may also require the installation of an ignition interlock device (IID). This device checks your breath for alcohol before your car will start.
Penalties increase with each new offense.
Enhanced Penalties
Certain factors can make the punishment more serious. These include:
- Very high BAC levels
- Causing an accident
- Injuring another person
- Having a child in the car
- Refusing a chemical test
For example, if someone is injured, the charge may become a felony. Felony DUIs can lead to longer prison sentences and larger fines.
Implied Consent Law
California has an implied consent law. This means that by driving in the state, you agree to take a chemical test if lawfully arrested for DUI.
If you refuse a breath or blood test:
- Your license may be suspended longer.
- You may face added penalties.
- The refusal can be used against you in court.
Understanding this rule is important before you decide how to respond during a traffic stop.
Long-Term Consequences
A DUI conviction can affect more than just your driving record. It may also lead to:
- Higher car insurance rates
- Trouble finding certain jobs
- Professional license issues
- A permanent criminal record
Because of these risks, many people choose to speak with a criminal defense attorney right away.
Key Takeaways
- In California, DUI is the official legal term for impaired driving.
- Many people ask about the difference between a DWI and a DUI, but California mainly uses DUI.
- The legal BAC limit is 0.08% for most adult drivers.
- DUI charges can involve alcohol or drugs, including prescriptions.
- After arrest, both the court and DMV may take action.
- Penalties can include fines, probation, license suspension, and jail time.
- Refusing a chemical test can lead to extra penalties.
