A Delaware court has upheld the dismissal of a negligence case involving a car accident between Maureen Leyva and Jason Lee Klingman, a truck driver for Republic/BFI Waste Services LLC. The Superior Court ruled on August 25, 2026, that Leyva's failure to provide expert testimony was a critical factor in the decision to dismiss her case. This ruling may impact future negligence claims that require specialized knowledge to establish liability.
The case, Leyva v. Klingman, was filed under docket number N26A-02-001 CLS. It stemmed from a collision that occurred in July 2024 when both parties were turning at an intersection in Wilmington, Delaware. Leyva claimed that Klingman's truck violated federal weight regulations and bridge height clearance rules, but she did not specify which regulations were breached.
In her original complaint, Leyva alleged that Klingman’s operation of the truck was negligent and led to the accident. Following the incident, she served Klingman with interrogatories seeking specific measurements of the truck and its compliance with relevant regulations. However, after Klingman objected to these interrogatories, Leyva filed a motion to compel responses, which the trial court denied, agreeing that expert testimony was necessary to prove her claims.
As the case progressed, the trial court set deadlines for expert disclosures, requiring Leyva to provide an expert witness by January 12, 2026. Leyva later informed the court that she was unable to find an expert to support her claims, stating that the costs of hiring one were prohibitive. On January 23, 2026, the trial court granted Klingman’s motion for summary judgment, effectively dismissing Leyva's case due to her lack of expert testimony.
In the appeal, Leyva argued that the trial court erred in requiring expert testimony to prove her case. However, the Superior Court, led by Judge Calvin L. Scott, Jr., affirmed the lower court's decision, stating, "The court did not err as a matter of law by granting Appellee’s Motion for Summary Judgment because there was no evidence that the truck violated any federal or state regulations, let alone caused Appellant’s alleged injuries." The court emphasized that to prevail in a negligence action, a plaintiff must demonstrate that a defendant's actions breached a duty of care that directly caused the plaintiff's injuries.
The court also noted that under Delaware law, violations of safety regulations can constitute negligence per se, but the plaintiff must establish that such violations occurred. In this case, Leyva's failure to provide expert testimony meant there was no evidence to support her claims regarding the truck's compliance with weight regulations.
Furthermore, the court clarified that expert testimony is necessary when the facts of a case are not within the common knowledge of laypeople. It stated, "Opinions based on scientific, technical, or other specialized knowledge can only be offered by an expert qualified under D.R.E. 702." Leyva's arguments that she could rely on her own research or that Klingman could testify as an expert were deemed insufficient by the court.
This ruling has significant implications for future negligence cases in Delaware, particularly those involving complex regulations that require specialized knowledge. Plaintiffs may need to be more diligent in securing expert testimony to support their claims, especially in cases involving vehicle regulations and safety standards.
Looking ahead, Leyva could potentially seek further legal recourse by appealing to a higher court, although the filing did not indicate whether she plans to do so. There are no related cases pending at this time, but the outcome of this case may influence similar future litigation involving negligence and expert testimony requirements.