South Dakota’s “Slight” Contributory Negligence Rule

South Dakota does not follow the same fault-allocation rules as most states. Instead, South Dakota applies a two-part legal standard established by statute that requires the finder of fact—usually the jury—to make two specific determinations:

1. Whether the plaintiff and defendant(s) were both negligent.
2. If the plaintiff was negligent, whether the plaintiff’s negligence was “more than slight” in comparison to the negligence of the defendant(s).

The term “slight” means “small.” The finder of fact is not asked to disclose a percentage of fault assigned to the plaintiff.

For this rule to apply, the injured person’s alleged contributory negligence must combine with the negligence of the defendant(s) to cause, or contribute to causing, the plaintiff’s injury.

How the Rule Works

If the jury determines that the injured person’s negligence was more than slight in comparison to the negligence of the defendant or defendants, the injured person cannot recover damages.

If the jury determines that the injured person’s negligence was slight in comparison to the defendant’s negligence—but not more than slight—the injured person may still recover damages. However, the damages must be reduced in proportion to the injured person’s contributory negligence.

Why This Matters

Under this statutory framework, the opportunity for an injured person to recover can be very narrow.

Any negligence by the injured person that a jury finds to be more than slight will bar recovery entirely. Even when the injured person is found negligent, but not more than slight in comparison to the defendant or defendants, the amount by which the jury may reduce damages based on the injured person’s contributory negligence can be difficult to predict.

Insurance companies are keenly aware of these realities. Insurance adjusters and defense attorneys are well-practiced at reframing the facts to push a plaintiff’s conduct past “slight.” They look for evidence that the injured person was distracted, speeding even marginally, unfamiliar with road conditions, or failed to take some precaution. Any of these can be packaged as more than slight negligence. A South Dakota comparative negligence attorney working for the plaintiff must be equally aggressive in countering that narrative with evidence, expert testimony, and a thorough reconstruction of what actually happened.

Hoy Law represents accident victims across South Dakota who face exactly these challenges. Whether the dispute involves a car crash on a rural stretch of highway, a commercial semi-truck collision near an interstate corridor, or another serious incident, our attorneys understand and the jury’s application of the comparative negligence standard will control whether injured persons are allowed to recover damages.

How South Dakota’s “More than Slight” Standard Works in Practice

In contrast to the comparative-fault systems used in most states, South Dakota does not rely primarily on relative percentages of fault assigned to the injured person and defendant(s). Instead, South Dakota’s contributory-negligence standard requires the finder of fact to decide whether an injured person’s negligence was “slight” or “more than slight” when compared with the negligence of the defendant or defendants. That distinction can create substantial uncertainty for injured plaintiffs. Courts and litigants have wrestled for decades with what “slight” and “more than slight” actually mean. Although those terms may sound simple, they can become major battlegrounds in contested litigation.

Insurance adjusters and defense attorneys are well-practiced at portraying and reframing the facts to claim that an injured person’s alleged negligence was “more than slight.” They often present evidence that the injured person was distracted, speeding even marginally, unfamiliar with road conditions, or failed to take some precaution. Any of these arguments can be packaged and presented as contributory negligence “more than slight” in comparison with the negligence of the defendants. Our attorneys know how to counter these arguments and present evidence compelling a finding of fault on behalf of the defendants.

Why Hoy Law Handles These Cases Differently

Hoy Law has accumulated over 150 years of combined attorney experience representing accident and injury victims in South Dakota and surrounding states. The firm holds a distinction that matters directly in serious collision cases: its attorneys include the only board-certified trucking accident lawyers in South Dakota. Board certification in trucking law reflects a depth of specialized knowledge in liability analysis, federal regulations, and complex fault disputes that general practitioners simply do not carry. In cases where comparative negligence is genuinely contested, that specialization affects how evidence is gathered, how experts are retained, and how arguments are framed before a jury.

The “slight and “more than slight” standards create substantial road blocks that make recovering very challenging when some fault can be attributed to the injured person. Hoy Law’s approach involves examining police reports, reviewing black box data from commercial vehicles, obtaining witness statements early before memories fade, and working with accident reconstruction professionals when the facts require it. The firm does not allow insurance companies to set the terms of a fault analysis. It builds its own version of the evidence record and uses that record to define how negligence is characterized throughout the case.

Clients throughout Sioux Falls and across the state have come to the firm after being told by insurers that their own actions contributed to a crash and that their claim was worth little or nothing. In many of those situations, the underlying conduct did not rise above slight negligence under a proper legal analysis. Recovering that distinction is often the difference between meaningful compensation and nothing at all.

Situations Where “Slight” Contributory Negligence and “More than Slight” Become the Central Issues

• Multi-vehicle highway collisions: On stretches of I-90, I-29, and US-14 that cross South Dakota, high-speed multi-vehicle crashes often involve questions about lane changes, following distances, and reaction time, making comparative fault disputes nearly inevitable.
• Semi-truck and commercial vehicle accidents: When a semi-truck driver or trucking company tries to deflect liability, they frequently argue that the passenger vehicle operator contributed to the crash; the “slight” and “more than slight” standard gives them a legal hook to push for a complete bar to recovery.
• Winter road conditions and driver conduct: South Dakota winters produce black ice, whiteout conditions, and icy bridges; insurers routinely argue that driving in adverse conditions is itself a form of negligence, making the characterization of that conduct critical.
• Intersection accidents in Sioux Falls and Rapid City: Urban crashes at signalized or uncontrolled intersections often involve disputed accounts of who had the right of way, and both parties frequently claim the other was at fault.
• Rear-end collisions with contested following distance claims: Even in crashes where liability seems clear, defense teams may argue that the front driver’s sudden braking or failure to signal contributed enough to push their fault above slight.
• Motorcycle accidents: Motorcyclists are disproportionately targeted in comparative negligence arguments, with insurers arguing lane positioning, speed, or visibility choices constituted more than slight fault.
• Premises liability incidents with shared responsibility claims: When someone is injured on a property and the owner argues the visitor should have noticed a hazard, the “slight” and “more than slight” analysis becomes the framework for determining whether any recovery is possible. 

What to Do When Fault Is Being Disputed After a South Dakota Accident

The moments after an accident are when the factual record gets built, for better or worse. Photographs taken at the scene, witness contact information gathered immediately, and a consistent account given to police all contribute to the foundation of a comparative negligence analysis. If you were injured and physically able, documenting road conditions, signage, traffic control devices, and vehicle positions before anyone moves them is among the most valuable things you can do. If you were not able to do that yourself, getting an attorney involved quickly enough to preserve evidence is the next best step.

South Dakota generally requires a personal injury lawsuit to be commenced within three years after the cause of action accrues, which is usually the date of accident causing the injuries. That deadline is not a reason to delay. Evidence degrades, witnesses become harder to locate, and surveillance footage from nearby businesses is often overwritten within days or weeks. The sooner a legal team can begin working a case, the stronger the evidentiary position becomes.

If an insurance adjuster contacts you before you have legal representation, understand that anything you say can be used to characterize your conduct as more than slightly negligent. Adjusters are trained to ask questions in ways that elicit admissions. A statement that you “didn’t see them coming” or “could have braked sooner” can later be presented as evidence that your negligence was more than slight. The safest course is to say very little until an attorney is involved.

South Dakota personal injury cases involving vehicle accidents typically pass through the Seventh Judicial Circuit Court for Minnehaha County cases in Sioux Falls, or through other circuit courts depending on where the accident occurred. Pennington County cases involving Rapid City accidents are handled through the Seventh Judicial Circuit as well. Understanding local court procedures and how judges in these venues approach comparative negligence questions is part of what distinguishes a firm with genuine South Dakota roots from one without them. Police reports can be obtained through the South Dakota Highway Patrol or the relevant municipal police department, and medical records should be preserved and organized early for use in damages calculations.

Questions about Contributory Negligence in South Dakota

Can I still recover compensation if I was partly at fault for the accident?

Potentially, yes. Under South Dakota’s comparative fault standard, if your negligence was only slight, you can still recover damages, but those damages will be reduced in proportion to your share of contributory negligence. Hiring Hoy Law early can help protect your claim and improve your chances of recovery when fault is disputed.

Does South Dakota use a percentage threshold like the 50 percent bar in other states?

No. South Dakota does not use a percentage of fault to determine liability. The standards used are the “slight” negligence and “more than slight” comparisons, without mathematical assignments of fault in terms of percentages.

How do insurance companies use this standard to deny claims?

Insurers invest heavily in gathering evidence that pushes the plaintiff’s conduct past the threshold of slight negligence. They may hire investigators, request phone records, review social media, or obtain surveillance footage to build an argument that the injured person was distracted, speeding, impaired, or otherwise more than minimally responsible. By arguing that the plaintiff’s negligence was not slight, the insurer attempts to eliminate any recovery obligation entirely. This is why having legal representation that understands how to counter this strategy matters.

What if both drivers say the other one caused the crash?

Competing accounts of fault are common in South Dakota accident cases. When both sides dispute liability, the case often turns on physical evidence, expert reconstruction, witness testimony, and data from vehicle systems. A thorough investigation that predates any loss or destruction of evidence can be decisive. Early investigations and the preservation of evidence are essential. Hiring Hoy Law early can help protect your claim and improve your chances of recovery when fault is disputed.

Can the South Dakota Comparative Negligence standards affect a semi-truck accident case differently than a regular car accident?

Yes. Semi-truck accident cases involve additional layers of liability because trucking companies, cargo owners, and maintenance contractors may all share fault. That complexity actually creates more opportunities for defendants to point fingers at each other or at the injured party. At the same time, federal trucking regulations set a high standard of care for commercial carriers, which provide another potential layer of fault on behalf of the defendants. A South Dakota comparative negligence attorney with trucking case experience understands how to use those regulations to the best advantage.

Does comparative negligence apply to motorcycle accident claims in South Dakota?

Yes. The “slight” negligence and “more than slight” standards also apply to motorcycle accident cases. Motorcycle drivers also face additional challenges because of common biases against motorcycles. Defense teams often argue that riding a motorcycle reflects a disregard for personal safety, because of lane positioning or speed choices, lack of seat belts and helmet issues. Rebutting those arguments requires specific evidence and, in some cases, expert testimony about motorcycling standards and safe riding practices.

Is it worth pursuing a claim if the insurance company has already told me I was partially at fault?

An insurer’s initial fault determination is not a legal ruling. It is a negotiating position. Insurers routinely overstate a claimant’s comparative fault to reduce or eliminate the payout they face. Whether your actual conduct rises above slight negligence under the law is a question that depends on the evidence, the applicable standard of care, and how the facts are presented and contested. Many people who are told they share fault ultimately recover meaningful compensation after proper legal analysis and advocacy. The insurer’s characterization of your conduct is the beginning of a conversation, not the end of it.

Representing South Dakota Comparative Negligence Clients Statewide

Because of the unique nature of our comparative negligence laws, many people injured in accidents that take place in South Dakota face the same legal challenges when contributory negligence is alleged. Our attorneys are familiar with South Dakota’s highways, rural roads, and urban intersections, as well as the accident patterns and liability questions that each location presents. Hoy Law applies the same rigorous approach to comparative negligence analysis regardless of where a particular accident occurred.

Talk to a South Dakota Comparative Negligence Attorney About Your Case

Under the South Dakota Comparative negligence laws, the margin between recovering full compensation and recovering nothing at all can be razor thin. Our attorneys have the experience, the resources, and the litigation background to build the strongest possible case for clients whose fault is being disputed.

The firm offers free consultations so that anyone dealing with these questions can get a direct, honest assessment of where their case stands before making any decisions. Reach out to Hoy Law and speak with a South Dakota comparative negligence attorney who will focus on you and the specific circumstances of your case.