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AB 366

Ignition interlock devices.

2025-2026 Regular Session Introduced by Juan Alanis and 20 co-sponsors

AB 366 adjusts California's mandatory ignition interlock device requirements for DUI offenders, modifying installation periods and eligibility to balance public safety with offender practicality.

Chaptered by Secretary of State - Chapter 689, Statutes of 2025.
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Bill Summary · AB 366

Legislative bill overview

AB 366 modifies California's ignition interlock device (IID) requirements for DUI offenders by adjusting mandatory installation periods and eligibility criteria. The bill, now law as Chapter 689 of the 2025 Statutes, alters when and for how long these breath-alcohol monitoring devices must be installed in vehicles of convicted drunk drivers.

Why is this important

Ignition interlock devices are a critical public safety tool that prevent impaired individuals from operating vehicles, reducing repeat DUI incidents and related fatalities. Changes to IID requirements directly affect both public safety effectiveness and the financial/practical burden on offenders, making this legislation consequential for traffic safety policy and criminal justice outcomes.

Potential points of contention

  • Cost burden on offenders: IID installation and monthly monitoring fees can exceed $1,000-$1,500 annually, raising equity concerns about whether financial hardship should affect DUI penalties
  • Effectiveness vs. inconvenience trade-off: Shorter mandatory periods may reduce compliance costs but could compromise deterrent effect; longer periods increase effectiveness but may create undue hardship
  • Scope of application: Disagreement likely exists over whether all DUI convictions warrant IID requirements or if distinctions should exist based on blood-alcohol level, prior offenses, or other factors

Compiled from official sources — confirm details with the bill’s official record.

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