DUI Laws by State

Driving under the influence (DUI) laws prohibit operating a motor vehicle while impaired by alcohol or drugs. Penalties vary by state and may include fines, license suspension, jail time, and ignition interlock requirements.

Why DUI Laws Vary by State

The United States has a federal system, which means each state has authority to enact its own laws on most subjects. While federal law sets a floor in some areas, states are free to adopt stricter or different rules. That is why dui laws can look very different depending on where you live or where an incident occurred.

Courts also play a major role. State courts interpret statutes, and appellate decisions can change how a law is applied. Local ordinances may add another layer of regulation in cities and counties.

Common Questions About DUI Laws

Frequently Asked Questions

What is the legal BAC limit?

Answers vary by state. Select your state below for localized information, or consult a licensed attorney in your jurisdiction.

What are the penalties for a first DUI?

Answers vary by state. Select your state below for localized information, or consult a licensed attorney in your jurisdiction.

Can you refuse a breathalyzer?

Answers vary by state. Select your state below for localized information, or consult a licensed attorney in your jurisdiction.

How long does a DUI stay on your record?

Answers vary by state. Select your state below for localized information, or consult a licensed attorney in your jurisdiction.

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Important: The information on this page is for general educational purposes only and is not legal advice. Laws change frequently and may have exceptions. For advice about your specific situation, consult a licensed attorney in your jurisdiction. Read our full disclaimer.