Driving Under the Influence Interlock Laws by State as of March 2026

Laws requiring interlocks for alcohol impaired driving offenders vary by state but are crucial in cutting down drunk driving crashes. The table below highlights each state's specific laws and requirements.

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This material has been prepared for general information purposes only. It is not guaranteed to be current and should be independently verified. Do not rely on it when considering how a law may apply to your circumstances.

Chart: Simmrin Law GroupSource: IIHSDownload imageCreated with Datawrapper