SecondChanceInfo

Ignition Interlock Device (IID) in South Dakota

South Dakota uses the term "DUI" for impaired driving offenses. IID requirement: required for repeat offenses only. First offense scope: Not required (unless BAC 0.17%+; then 6 months). Confirm your actual notice and license status.

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Required for repeat offenses only

Quick Answer

South Dakota requires IID for second and subsequent DUI convictions. First-offense DUI does not require IID. The state also requires IID for any DUI involving a BAC of 0.17% or higher, even on first offense.

IID Duration by Offense

OffenseIID Duration
1st OffenseNot required (unless BAC 0.17%+; then 6 months)
2nd Offense1 year
3rd Offense1 year
4th+ Offense2 years

BAC threshold: 0.17% BAC for first offense; all repeat offenses

Confirm the device, provider and written quote

Check the responsible authority’s current approval information for the particular device and installer. Request the billing unit, included services, actual paid visit schedule, taxes, fees and removal terms in writing. Confirm financial assistance separately.

Add your own quoted charges in the IID worksheet. Unknown charges stay unknown; no local price or appointment count is assumed.

Restricted License with IID

Available

South Dakota allows a restricted license with IID for work and essential driving.

Tampering / Circumvention Penalties

Tampering with an IID in South Dakota carries fines and extension of the IID requirement.

Early Removal

South Dakota does not allow early removal.

South Dakota-Specific Notes

South Dakota is one of the less strict states for first-offense IID — standard first-offense DUI does not require IID unless BAC was 0.17% or higher.

Frequently Asked Questions

Is an IID required for a first DUI in South Dakota?
Not for standard first-offense DUI. If your BAC was 0.17% or higher, IID is required for 6 months.
How long do I need an IID in South Dakota?
Second and third offense: 1 year. Fourth or more: 2 years.
How much does an IID cost in South Dakota?
Get a written quote for your vehicle and program. Confirm the billing period, included service, separately paid visits, taxes, state/program fees and removal charges. Verify any financial assistance before assuming a discount. A generic state price range is not your quote.

Related South Dakota Guides

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Disclaimer: This is informational only, not legal advice. IID requirements, costs, and approved providers change frequently. Verify current requirements with the South Dakota DMV, your IID provider, or a qualified DUI attorney in South Dakota.
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Sources

NHTSA: interlock device and program background. This national reference does not verify every state rule above. Confirm the applicable law and current instructions with the authority named on your order or licensing notice.