01/16/2026
Washington State implemented significant changes to its DUI (Driving Under the Influence) laws effective January 1, 2026, primarily through Engrossed Substitute House Bill 1493 (ESHB 1493), passed in the 2024 legislative session (with some references to 2025 signing/confirmation). These updates focus on repeat offenders, rehabilitation options, and enforcement tools, balancing tougher penalties with expanded treatment pathways.
Key Changes Effective January 1, 2026
1. Extended Lookback Period for Felony DUI The “lookback” window for prior impaired driving offenses (DUI or physical control) that can elevate a new charge from gross misdemeanor to felony increased from 10 years to 15 years.
• Under the old rule: Three or more priors within 10 years → felony.
• New rule: Three or more priors within 15 years → felony (class B or higher, with potential prison time instead of just jail).This means older convictions (e.g., from 2011–2015) that previously “aged out” can now count toward felony charging and harsher sentencing for repeat offenders. For first or second DUIs (misdemeanors), the sentencing enhancement lookback generally remains 7 years.
2. Expanded Deferred Prosecution Options Previously, deferred prosecution (avoiding conviction by completing treatment/probation) was limited to one lifetime use for DUI-related offenses.
• Now, a second deferred prosecution is possible in limited cases if:
• The person successfully completed a prior deferred prosecution.
• They have remained conviction-free for a significant period.
• No disqualifying priors (e.g., no vehicular homicide/assault or felony DUI).This provides a narrow second chance for rehabilitation-focused individuals who have shown long-term sobriety and compliance.
3. New Sentencing Alternative for Felony DUI A Drug Offender Sentencing Alternative (DOSA)-style program was introduced for some felony DUI convictions.
• Eligible offenders can receive reduced prison time in exchange for mandatory substance use disorder treatment and supervision.
• This aims to address root causes (addiction) rather than purely punitive incarceration.(Note: Some sources indicate a related felony DUI sentencing alternative was delayed to July 1, 2029 in 2025 legislation, but the core DOSA-DUI option appears tied to the 2026 effective date for ESHB 1493.)
4. Oral Fluid (Roadside) Testing Authorization Law enforcement can now use optional oral fluid testing (e.g., saliva swabs) during DUI investigations as a preliminary tool.
• It’s voluntary for the driver.
• Results cannot be used as evidence in court (only for probable cause to request further testing).This supplements breath/blood tests, especially for drug impairment.
Other Related Notes
• No Change to BAC Limit Yet: The standard per se BAC remains 0.08% (or 5 ng/mL THC). Proposals like Senate Bill 5067 (to lower it to 0.05%, potentially effective July 2026) were introduced in 2025 but did not pass into law for the January 2026 changes. It may resurface in future sessions amid rising impaired driving concerns.
• Administrative and Other Impacts: Changes also clarify ignition interlock device (IID) exemptions, probationary licenses, and treatment requirements in deferred cases. Felony-level penalties now include longer IID mandates, probation, and record impacts.
• Overall Intent: These reforms aim to reduce recidivism through better treatment access while imposing stricter accountability on habitual offenders, responding to data on impaired driving’s role in crashes.
These are the primary DUI-specific updates as of January 2026. Laws can evolve further (e.g., via 2026 legislative session), so for personalized advice, current statutes (RCW 46.61.502 et seq.), or if facing charges, check the Washington State Legislature website, Department of Licensing (DOL), or consult a licensed Washington DUI attorney. Prioritizing alternatives like rideshares remains the safest choice.
