Wyoming Ignition Interlock Restricted License: Requirements and Costs

Who Needs an Interlock in Wyoming

Not every first-offense DUI requires an ignition interlock device. Wyoming law (W.S. § 31-7-402) mandates an Ignition Interlock Restricted License for drivers in these situations:

• BAC of 0.15% or higher — the high-BAC threshold triggers a mandatory 6-month interlock requirement
• Chemical test refusal — refusing the evidentiary breath, blood, or urine test at the station
• Any situation where a probationary license is unavailable — drivers with test refusals cannot get a standard probationary license

If your BAC was between 0.08% and 0.14% with no refusal, you may qualify for a probationary (hardship) license instead, which doesn't require an interlock device. The IIRL is the only restricted driving option for high-BAC and refusal cases.

The Wait Period Before You Can Apply

For test refusal cases, there's a mandatory 45-day hard suspension before you can apply for an IIRL. During those 45 days, you cannot legally drive at all — no exceptions, no restricted permit, no essential travel allowance.

For high-BAC cases (0.15%+) without a refusal, you can apply for the IIRL without a wait period, though the device must remain installed for the full 6-month term.

Step-by-Step: Getting an IIRL

1. Select an approved vendor. Wyoming requires devices from state-certified manufacturers. Approved providers include:

• Intoxalock (833-210-8201)
• LifeSafer Inc (855-630-2517)
• RoadGuard Interlock (800-332-6858)
• Low Cost Interlock (844-218-6335)
• Smart Start Inc (800-880-3394)

2. Schedule in-state installation. A certified technician at an approved service center within Wyoming installs the device and uploads the installation certificate to WYDOT.

3. File SR-22 high-risk insurance. Your auto insurance carrier must file an SR-22 certificate directly with WYDOT. This SR-22 must remain active for 3 consecutive years — any lapse triggers automatic license suspension.

4. Submit the restricted license application. Pay the $50 reinstatement fee, your standard driver's license fee, and the $100 interlock administrative fee to WYDOT.

What the IIRL Lets You Do

Unlike the probationary license, which restricts you to essential travel (work, school, medical, court), the IIRL allows unrestricted driving — as long as every vehicle you operate has a certified interlock device installed. You can drive anywhere, anytime, for any purpose.

The interlock requires you to blow into the device before starting the engine. If it detects alcohol above the threshold, the vehicle won't start. It also requires random rolling retests while you're driving.

Total Cost Breakdown

Over a 6-month interlock term, the device costs alone run $490–$1,050 (installation plus 6 months of lease). Add the WYDOT fees and SR-22 costs, and the first year of an IIRL typically costs $1,200–$2,800.

Financial Assistance for SNAP Recipients

Wyoming Statute § 31-7-401 provides an indigent assistance program for drivers who can't afford interlock costs. If you're actively enrolled in SNAP (Supplemental Nutrition Assistance Program), WYDOT will:

• Pay half of the installation and lease costs
• Waive the $100 interlock administrative fee entirely

Apply through the oneWYO portal, by email to [email protected], or by mail to WYDOT Driver Services in Cheyenne. You'll need verified proof of active SNAP eligibility.

Common IIRL Mistakes

• Installing before filing SR-22: WYDOT won't issue the restricted license without an active SR-22 on file, even if the device is already installed
• Using an out-of-state vendor: The installation must happen at a certified service center within Wyoming
• Missing calibration appointments: Vendors schedule regular calibrations (typically monthly). Missing one can result in a device lockout and a violation report to WYDOT

Our Wyoming First-Offense DUI Guide includes a complete IIRL decision tree that walks you through vendor selection, the application timeline, and a month-by-month cost planner for the interlock period.

See more Wyoming guides →