Wyoming ignition interlock & DUI requirements
Wyoming requires an ignition interlock after a first DUI only at a BAC of 0.15 or higher (6 months); below that threshold it is not automatic, though other circumstances set by the statute can still require one. A repeat offense carries 1 year.
Ignition interlock device rules, approved vendors, SR-22 insurance filing, and license reinstatement in Wyoming, cited to the statute and Wyoming Department of Transportation (WYDOT), Driver Services.
- IID on first offense
- High-BAC only
- Minimum IID period (first)
- 6 months
- SR-22 filing
- Required · 3 years
The short answers
Do I need an interlock?
- First offense
- Required only above a high-BAC threshold
- Threshold
- BAC 0.15
- Minimum period
- 6 months
What the source says (2)
- First offense
“where the department's administrative action indicates the person had an alcohol concentration of fifteen one-hundredths of one percent (0.15%) or more, operate only vehicles equipped with an ignition interlock device, pursuant to W.S. 31-7-401 through 31-7-404, for a period of six (6) months.”
- Minimum period
“operate only vehicles equipped with an ignition interlock device, pursuant to W.S. 31-7-401 through 31-7-404, for a period of six (6) months.”
What it costs here
- State reinstatement fee
- $50
- Restricted-license fee
- $55
- Reduced-cost rule
- Ignition Interlock Assistance
- Interlock lease, national range
- $50–$150 per month
What the source says (4)
- State reinstatement fee
“(e) If a driver's license is reinstated after a period of suspension or revocation, the fee for the reinstatement shall be fifty dollars ($50.00) unless the final decision by the hearing examiner, or a court reverses the action taken by the department.”
- reinstatementFee_wydot
“Wyoming law requires a reinstatement fee of $50 be assessed for all suspensions, except for nonpayment of child support suspensions (which is a $5 fee).”
- Restricted-license fee
“If the suspension is alcohol related, you will be required to get an alcohol assessment before a probationary driver's license can be issued. If an SR-22 is required, it must be on file before a probationary license can be issued.”
- Reduced-cost rule
“Indigent persons (Wyoming Statute 31-7-401) required to operate only vehicles equipped with an ignition interlock device may have half the costs of obtaining and using such device paid from funds made available by the state.”
How to drive legally now
- Restricted license
- Available in some first-offense cases · Probationary License
- Hearing-request deadline
- 20 days from the notice
- Driving after a DUI in Wyoming: the restricted license
- How to get a license back in Wyoming
- Date the hearing deadline with the timeline calculator
What the source says (2)
- Restricted license
“Eligible for probationary driver license – If you have not had one in the past five years and you don’t have an ignition interlock requirement.”
- Hearing-request deadline
“Every request must be made, in writing, to the Department, and must be received or postmarked within 20 days of the date the Department gave the person notice of the intended action. The required fee must be included with the request.”
Approved interlock providers
Vendors listed here appear on the Wyoming licensing agency's approved-device list. Listing order is alphabetical and is not a ranking or endorsement. Installation locations are on each vendor's own locator.
Where to get it installed — the official approved-installer list: Agency approved-vendor list
| Vendor | Website | Location finder |
|---|---|---|
| Intoxalock | Intoxalock website | Find a location |
| LifeSafer | LifeSafer website | Find a location |
| Low Cost Interlock | Low Cost Interlock website | Find a location |
| RoadGuard Interlock | RoadGuard Interlock website | Find a location |
| Smart Start | Smart Start website | Find a location |
What Wyoming law requires
Wyoming's ignition interlock, SR-22, and reinstatement rules are set by the statute and agency rules cited below. The values in the tables on this page are taken from those sources and are not interpretations of how they apply to any particular case.
Primary source: Wyo. Stat. § 31-5-233(f) (with program provisions at Wyo. Stat. §§ 31-7-401 through 31-7-404)
Ignition interlock requirement
| Item | Wyoming rule |
|---|---|
| IID on first offense | Required only above a high-BAC threshold |
| Minimum IID period, first offense | 6 months (first conviction with BAC 0.15% or more) |
| Minimum IID period, repeat offense | 1 year (second conviction); 2 years (third); remainder of life for fourth or subsequent, with court removal possible after 5 years |
Under Wyo. Stat. § 31-5-233(f)(ii), a first conviction (or deferred prosecution under § 7-13-301) requires operating only vehicles equipped with an ignition interlock device for six months where the department's administrative action indicates an alcohol concentration of 0.15% or more. Threshold: 0.15%. WYDOT states the requirement applies to a first DUI conviction with a BAC of .15 or above and to any second or subsequent conviction regardless of BAC. Under § 31-5-233(n) the court may substitute or add a 24/7 sobriety program.
What the source says (5)
- IID on first offense
“where the department's administrative action indicates the person had an alcohol concentration of fifteen one-hundredths of one percent (0.15%) or more, operate only vehicles equipped with an ignition interlock device, pursuant to W.S. 31-7-401 through 31-7-404, for a period of six (6) months.”
- Minimum IID period, first offense
“operate only vehicles equipped with an ignition interlock device, pursuant to W.S. 31-7-401 through 31-7-404, for a period of six (6) months.”
- Minimum IID period, repeat offense
“for a second conviction, operate only vehicles equipped with an ignition interlock device, pursuant to W.S. 31-7-401 through 31-7-404, for a period of one (1) year;”
- Ignition interlock statute
“31-5-233. Driving or having control of vehicle while under influence of intoxicating liquor or controlled substances; penalties.”
- IID on first offense
“First DUI conviction with a BAC of .15 or above Second or subsequent DUI conviction regardless of the BAC level”
Removal: Fixed statutory period, no early removal. Full rule and source
SR-22 requirement
An SR-22 is a certificate an insurer files with the state to confirm that a driver carries the liability coverage the state requires. Some states use an FR-44 or a different form for alcohol-related offenses; where Wyoming does, the sources below say so.
| SR-22 filing required after a DUI | Yes |
|---|---|
| Filing period | 3 years |
SR-22 (not FR-44). WYDOT's interlock page requires the driver to file SR-22 insurance with the Department before an ignition interlock restricted (IIR) license is issued, and Wyo. Stat. § 31-7-402(c)(vi) requires an IIR applicant to file and maintain proof of financial responsibility for the period of the restricted license. Under § 31-7-128(e) a suspended driver must file and maintain proof of financial responsibility for a three-year period beginning on the date of suspension; § 31-7-127(c) imposes the same three-year requirement after a revocation; § 31-9-401(e) sets the general three-year maintenance period.
What the source says (2)
- SR-22 filing required after a DUI
“File SR-22 insurance with the Department; Apply for a special "IIR" restricted driver's license; Pay the $50 reinstatement fee, regular driver license fee, and the $100 ignition interlock administrative fee.”
- Filing period
“(e) Any person whose driver's license or nonresident operating privilege has been suspended shall, for a three (3) year period beginning on the date of suspension, file and maintain proof of financial responsibility as required in W.S. 31-9-401 through 31-9-414.”
Program costs
Fees set by the state are cited to the fee schedule. Vendor charges vary by vendor and are shown as published ranges with the month they were checked.
| Item | Amount | As of |
|---|---|---|
| License reinstatement fee | $50 | 2026-08-29 |
| Ignition interlock administrative fee for IIR license(WYDOT; 'Interlock Service Charge' on WYDOT fee list) | $100 | 2026-08 |
| Statutory cap on ignition interlock restricted license fee(Wyo. Stat. § 31-7-401(d)) | Not to exceed $125; not collected from qualifying indigent persons | 2026-08 |
| Indigent assistance(Wyo. Stat. § 31-7-401(b)(vii); WYDOT) | One-half of the cost of obtaining and using the device paid from state funds for persons eligible for SNAP; $100 administrative fee not required if approved | 2026-08 |
| Restricted license fee(WYDOT fee list) | $25 | 2026-08 |
What the source says (2)
- License reinstatement fee
“(e) If a driver's license is reinstated after a period of suspension or revocation, the fee for the reinstatement shall be fifty dollars ($50.00) unless the final decision by the hearing examiner, or a court reverses the action taken by the department.”
- License reinstatement fee
“Wyoming law requires a reinstatement fee of $50 be assessed for all suspensions, except for nonpayment of child support suspensions (which is a $5 fee).”
Exemptions and special cases
Four questions readers ask once an interlock is ordered — motorcycles, employer vehicles, medical inability to give a breath sample, and reduced-cost programs — answered as Wyoming's interlock program page or statute states them.
| Question | Wyoming rule |
|---|---|
| Motorcycles | A device may be installed on a motorcycle WYDOT's Ignition Interlock Program brochure states that an interlock device can be installed on a motorcycle, subject to whether the individual approved vendor offers that option. The statutes (§§ 31-7-401 to 31-7-404, § 31-5-233(f)) and the WYDOT interlock web page do not mention motorcycles. What the source says“Can I install an interlock device on my motorcycle? Yes, but please check with the individual vendors to see if they offer this option.” |
| Employer-owned vehicle | Exempt with conditions Wyo. Stat. § 31-7-402(c)(ii): devices must be installed on all motor vehicles the licensee will drive, whether owned by the licensee or not, except that a licensee may operate an employer's vehicle without a device during normal business activities, provided the vehicle is not used by the licensee for nonbusiness purposes. No written-notice or in-vehicle proof condition is stated in the statute. What the source says“except that a licensee may operate an employer's vehicle without an ignition interlock device installed during normal business activities and not used by the licensee for nonbusiness purposes;” |
| Unable to provide a breath sample | Not addressed on the official pages read Neither Wyo. Stat. §§ 31-7-401 to 31-7-404 (ignition interlock licenses) and § 31-5-233(f) (interlock requirement), nor the WYDOT Ignition Interlock page, its 2018 program brochure, or the WYDOT Chapter 10 ignition-interlock rules address a person physically unable to provide a breath sample. |
| Reduced-cost / indigent program | Available — Ignition Interlock Assistance Under Wyo. Stat. § 31-7-401(b)(vii), indigent persons required to operate only IID-equipped vehicles may have one-half the costs of obtaining and using the device paid from state funds; a person is indigent if they produce evidence they are eligible and qualified for the federal Supplemental Nutrition Assistance Program (SNAP). The interlock restricted license fee (statutory cap $125; WYDOT charges $100) is not collected from a qualifying indigent person (§ 31-7-401(d)). WYDOT administers it: apply with the Ignition Interlock Assistance application online (oneWYO), by email or by mail to WYDOT Driver Services. What the source says“Indigent persons (Wyoming Statute 31-7-401) required to operate only vehicles equipped with an ignition interlock device may have half the costs of obtaining and using such device paid from funds made available by the state.” |
| Commercial driver's license holders | WYDOT states an ignition interlock restricted license is not issued to a person holding a CDL. What the source says“An ignition interlock restricted license shall not be issued to any person holding a commercial driver’s license (CDL).” |
| Out-of-state residents (Wyo. Stat. § 31-7-402(e)) | A person required to apply for an ignition interlock license who resides in another state may meet the requirement by completing the ignition interlock program in the other state for the period required by Wyoming law. What the source says“If a person required to apply for an ignition interlock license resides in another state, the person may meet the ignition interlock license requirement by completing the ignition interlock program in another state for the period required by Wyoming law.” |
| 24/7 sobriety program alternative (Wyo. Stat. § 31-5-233(n)) | For the interlock periods under § 31-5-233(f)(ii)-(iv), the court may, as an alternative or in addition, require participation in a 24/7 Sobriety Program; a person in the program as an alternative is granted a restricted license under § 31-7-109(m). What the source says“require a person otherwise restricted to operating only motor vehicles equipped with an ignition interlock device under W.S. 31-5-233(f)(ii) through (iv) to participate in a program established under the 24/7 Sobriety Program Act, W.S. 7-13-1701 et seq.” |
| Indigent fee waiver for the interlock restricted license fee (Wyo. Stat. § 31-7-401(d)) | The department's ignition interlock restricted license fee (not to exceed $125) is not collected from an indigent person who qualifies for the half-cost assistance; WYDOT states the $100 administrative fee is not required if assistance is approved. What the source says“but in no event shall the fee exceed one hundred twenty-five dollars ($125.00). The fee shall not be collected from any indigent person who qualifies for the benefits described by paragraph (b)(vii) of this section.” |
Compare: motorcycles by state · employer, medical and reduced-cost exemptions by state
Frequently asked questions
- When does Wyoming require an ignition interlock after a DUI?
- Under Wyo. Stat. § 31-5-233(f), a first conviction where the department's administrative action shows an alcohol concentration of 0.15% or more requires an ignition interlock for six months; a second conviction requires one year; a third requires two years; and a fourth or subsequent conviction requires it for the remainder of the offender's life, with the option to apply to the court for removal after five years.
- How does a person get an ignition interlock restricted license in Wyoming?
- WYDOT states that after notification of an interlock requirement the driver must have a Wyoming-approved device installed by a Wyoming-certified technician at an approved service center, provide the installation certificate to the Department, file SR-22 insurance, apply for a special IIR restricted license, and pay the $50 reinstatement fee, the regular driver license fee, and the $100 ignition interlock administrative fee. The interlock time does not start until the IIR license is issued.
- What is Wyoming's license reinstatement fee after a DUI suspension?
- Wyo. Stat. § 31-7-113(e) provides that if a driver's license is reinstated after a period of suspension or revocation, the reinstatement fee is $50 (unless the department's action is reversed). WYDOT's reinstatement page states that Wyoming law requires a $50 reinstatement fee for all suspensions, except child-support suspensions, which carry a $5 fee.
- Is there financial assistance for the interlock in Wyoming?
- Under Wyo. Stat. § 31-7-401(b)(vii), indigent persons required to use an interlock may have one-half of the costs of obtaining and using the device paid from state funds; a person is considered indigent if eligible and qualified for the federal Supplemental Nutrition Assistance Program. WYDOT states the $100 ignition interlock administrative fee is not required if the assistance application is approved.
- How long must SR-22 insurance be maintained in Wyoming after a DUI suspension?
- Wyo. Stat. § 31-7-128(e) requires any person whose license has been suspended to file and maintain proof of financial responsibility for a three-year period beginning on the date of suspension; § 31-7-127(c) applies the same three-year period after a revocation. WYDOT's interlock page states the driver must file SR-22 insurance with the Department before an ignition interlock restricted license is issued.
Sources
- Wyoming Statutes Title 31 (Motor Vehicles) - §§ 31-5-233, 31-7-113, 31-7-127, 31-7-128, 31-7-401 to 31-7-404, 31-9-401 - Wyoming Legislature (PDF)
- WYDOT Driver Services - Ignition Interlock (program, fees, approved companies, assistance)
- WYDOT Driver Services - Reinstatement
- WYDOT Driver Services - Frequently Asked Questions (fee list)
- WYDOT Driver Services - Ignition Interlock Program brochure (03/2018)
- WYDOT Driver Services - Suspensions/Ignition Interlock
Record history
- — approvedVendors: LifeSafer Inc: 855-630-2517 RoadGuard Interlock: 800-332-6858 Low Cost Interlock: 844-218-6335 Smart Start Inc: 800-880-3394 Intoxalock: 833-210-8201 → 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
- — approvedVendors: RoadGuard Interlock; Low Cost Interlock; Smart Start Inc; Intoxalock; LifeSafer Inc → RoadGuard Interlock; Low Cost Interlock; Smart Start Inc; Intoxalock; LifeSafer Inc
- — Record verified against primary sources.