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South Dakota DUI Laws

DUI Defense in South Dakota

Statutes, Penalties, and Defense Strategies

What you are facing, the deadlines that bind you, and the questions an attorney needs to answer — under South Dakota (SD) DUI law.

BAC Limit

0.08

Enhanced BAC

0.17

Higher penalties above this

Lookback Period

10 years

Prior offenses count within

First Offense Penalties in South Dakota

Jail TimeUp to 1 year
FinesUp to $2,000
License Suspension30-day license revocation + 180-day restricted
Ignition Interlock

Plain language

A breath-tester wired into the car ignition. The car will not start without a clean sample.

May be ordered by the court

Implied Consent and Test Refusal

South Dakota has an

implied consent law

Plain language

By driving on the state's roads, you have already agreed to a chemical test if an officer has probable cause to think you are impaired.

like every state. The test can be breath, blood, or urine. Refusing carries its own penalty, listed below.

Refusal Penalty

1-year license revocation

South Dakota-Specific Detail

South Dakota's 24/7 Sobriety Program, which requires twice-daily alcohol testing, has been studied as a national model for reducing repeat DUI offenses.

Is your South Dakota DUI defense on track?

The Masked Researcher’s First Read checks 10 critical defense behaviors specific to DUI cases. Takes 2 minutes. Instant results.

Take the Free Defense Score

DUI Defense Playbook — $127

26 questions that change how your next attorney meeting goes, a case stage roadmap, red flag checklist, and a case progress scorecard. Instant PDF download — calibrated for South Dakota DUI defendants.

Get the DUI Playbook — $127Read the Free DUI Guide

Other South Dakota defense topics

Facing a different charge in South Dakota? Penalty ranges, enhancements, and defense questions for related crimes:

Drug Possession in South DakotaAssault in South DakotaDomestic Violence in South Dakota

Important: This page provides general legal information about South Dakota DUI laws as of the date of publication. Laws change frequently. This is not legal advice. For guidance specific to your case, speaking with a South Dakota-licensed attorney is one option, or take the free Masked Researcher’s First Read to see where your case stands.