STATE v. OLSEN Case Brief

Supreme Court of South Dakota1990
462 N.W.2d 474

Complete case briefs with LSD+

Every LSD.Law brief pairs a full IRAC analysis with opinion summaries at three levels of depth, written by a team of Harvard Law and MIT graduates - a quick synopsis when you are pressed for time, the complete reasoning when you need to go deep.

Adaptive Case Views

Toggle between Flash, Standard, and Expanded. Get what you need, when you need it.

Exam-Ready IRAC Format

We deliver the precise structure professors look for in exam answers.

Complex Cases, Clarified

We break down dense legal reasoning into something digestible, helping you grasp core concepts.

Case Brief Summary & Legal Analysis

3 min read

tl;dr: A farmer fatally struck a car while making a left turn. The court held his failure to see the oncoming vehicle was negligence, not the “conscious disregard of a substantial risk” required for a manslaughter conviction, and affirmed the dismissal of the charge.

Legal Significance: This case clarifies the critical distinction between criminal recklessness and ordinary negligence. For a manslaughter conviction, the prosecution must prove the defendant had a subjective awareness of the substantial risk their conduct created; mere inadvertence or a fatal traffic violation is insufficient.

STATE v. OLSEN Law School Study Guide

Use this case brief structure for your own legal analysis. Focus on the IRAC methodology to excel in law school exams and cold calls.

Case Facts & Court Holding

Key Facts & Case Background

The defendant, Michael Olsen, was operating a slow-moving tractor on a highway on a clear day. After pulling to the shoulder to allow a car to pass, he initiated a left turn toward a gravel road. As he crossed the opposite lane, his tractor was struck by an oncoming vehicle, resulting in the death of that vehicle’s driver. An eyewitness who had been following Olsen saw the oncoming car and anticipated the collision. Immediately after the crash, Olsen repeatedly stated, “I didn’t see it.” The State charged Olsen with second-degree manslaughter under a statute requiring a “reckless killing.” At the preliminary hearing, the investigating trooper testified that Olsen claimed he had looked but did not see the approaching vehicle. The magistrate court found the evidence insufficient to establish the requisite recklessness and dismissed the complaint for lack of probable cause. The State appealed.

Court Holding & Legal Precedent

Issue: Does a driver’s failure to see an oncoming vehicle before making a fatal left turn constitute “reckless” conduct sufficient to establish probable cause for second-degree manslaughter?

No. The court affirmed the dismissal of the manslaughter charge. The State Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor

Read the full analysis

The complete holding, rule, and analysis for this case are available to LSD+ subscribers.

Start 14-Day Free Trial

IRAC Legal Analysis

Premium Feature Unlock

About IRAC analysis

IRAC (Issue, Rule, Analysis, Conclusion) is the structure professors expect in exam answers. Each LSD.Law brief states the issue, the governing rule with citations, the court's application of that rule, and the conclusion - the same reasoning pattern you will use on exams and in practice.

Legal Issue

Does a driver’s failure to see an oncoming vehicle before making a fatal left turn constitute “reckless” conduct sufficient to establish probable cause for second-degree manslaughter?

Conclusion

This decision reinforces the high threshold for criminal liability in vehicular homicide Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nis

Legal Rule

Under South Dakota law, second-degree manslaughter requires a "reckless killing." Recklessness is Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commod

Legal Analysis

The court's analysis centers on the mens rea element of second-degree manslaughter: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lo

Flash-to-Full Case Opinions

Summary unavailable

No flash summary is available for this opinion.