Understanding How South Carolina Separates DUI And DUAC Charges
A traffic stop late at night in South Carolina can feel routine at first. A driver pulls over, an officer asks a few questions, and then suddenly the situation shifts into something far more serious. What many people do not realize in that moment is that South Carolina law allows for two closely related but distinct alcohol-related charges: DUI and DUAC.
At Matt Bodman, P.A., we have seen how confusing this distinction can be for people who are already overwhelmed by an arrest. The terminology sounds similar, the consequences overlap, and yet the legal paths behind each charge are not the same. Understanding that difference often becomes the first step in building a defense strategy that actually reflects what happened during the stop.
Why South Carolina Has Two Separate Alcohol Charges
South Carolina treats impaired driving through two different legal frameworks, even though both involve alcohol and driving.
A DUI charge focuses on impairment itself. That means the state is trying to prove that a driver’s ability to operate a vehicle was noticeably affected by alcohol or drugs, even if their exact blood alcohol level is not the centerpiece of the case.
A DUAC charge, on the other hand, is based more directly on blood alcohol concentration. It applies when a driver is found to have a BAC of 0.08% or higher, even where outward signs of impairment may not have appeared obvious during the stop.
That difference may sound technical, but it can shape how a case is built from the very beginning.
How DUI Charges Work In South Carolina
A DUI charge in South Carolina is built around observation and behavior. Officers and prosecutors often rely on what happened on the road and during the stop itself.
That can include things like:
- Erratic or unsafe driving patterns before the stop
- Performance on field sobriety tests
- Physical signs such as slurred speech or unsteady movement
- Officer observations during questioning
- Chemical test results, when available
The key point is that DUI does not always depend on a specific BAC number. Even if a driver tests below 0.08%, they can still be charged if law enforcement believes their ability to drive was impaired.
How DUAC Charges Work in South Carolina
DUAC stands for “Driving With an Unlawful Alcohol Concentration.” Unlike DUI, this charge is almost entirely tied to chemical testing results.
In most cases, a DUAC charge is based on:
- A blood alcohol concentration of 0.08% or higher
- Results from breath or blood testing
- The timing of the test in relation to driving
- Whether proper testing procedures were followed
The important distinction is that DUAC does not require proof of impaired driving behavior. If the test result meets the legal threshold, the charge can stand even if the driver did not show obvious outward signs of impairment during the stop.
That means someone can be charged with DUAC even if they felt fine, drove without incident, and showed few outward signs of impairment.
Where The Two Charges Overlap
Although DUI and DUAC are separate charges, they often arise from the same traffic stop. In some cases, a driver may even face both charges at the same time based on the same set of facts.
That overlap creates a situation where the state has multiple theories of prosecution, which can make the case feel heavier than expected. It also means the defense often has to examine both the testing process and the officer’s observations at the same time.
Key areas that often become important in both types of cases include:
- Whether the traffic stop itself was legally justified
- Whether field sobriety tests were properly administered
- Whether the breath or blood testing equipment was accurate and calibrated
- Whether environmental factors affected testing results
- Whether the timeline between driving and testing was reliable
In South Carolina, these cases can also trigger separate administrative license suspension issues tied to chemical testing and implied consent laws, even before the criminal case is resolved.
Why The Difference Matters For Your Defense
The difference between DUI and DUAC often shapes how evidence is challenged and what strategies may be available in court.
A defense approach may involve:
- Questioning whether the testing equipment produced accurate results
- Reviewing whether officer observations were subjective or consistent
- Challenging the legality of the initial stop
- Examining whether medical or environmental factors influenced performance
- Analyzing whether procedures were followed correctly from start to finish
At Matt Bodman, P.A., we know how quickly these cases can move from a traffic stop to a criminal charge with lasting consequences. A conviction can affect employment, licensing, and long-term opportunities in ways that are not always obvious at the outset.
Get The Help You Need After A DUI Or DUAC Arrest
A DUI or DUAC charge in South Carolina is not something to ignore or try to navigate alone. The details matter, and the way those details are interpreted can determine the direction of the entire case.
Attorney Matt Bodman, a former prosecutor, understands how these cases are built from both sides. That experience often becomes critical when evaluating whether the state’s evidence actually supports the charge being filed.
If you are facing a DUI or DUAC charge in Columbia or anywhere in South Carolina, reaching out early allows your defense to start before key decisions are made. A conversation at the right time can help clarify what happened and what options may be available to you. Contact Matt Bodman, P.A., and get started on moving forward.
"Matt is an awesome, down-to-earth guy who knows his stuff, a guy who truly cares here to help you out when you need it the most. Can not thank him enough!" - Owen K., ⭐⭐⭐⭐⭐
