218 A.3d 877
Pa.2019Background
- Plaintiff Joan Grove was struck by a bus; jury found both Grove and Port Authority negligent and allocated responsibility such that Grove’s share nearly barred recovery.
- At trial Grove requested a negligence per se instruction (that her alleged violation of statutes could be considered); the trial court refused and instructed only using standard comparative-negligence language about “percentage of negligence.”
- The jury explicitly asked about measuring Grove’s behavior against legal obligations but was instructed those obligations were immaterial to apportionment.
- The trial court used the Pennsylvania Suggested Standard Jury Instruction for comparative negligence without further defining what counts as a party’s “conduct.”
- The appellate majority held the trial-court error (omitting negligence-per-se guidance) harmless; the opinion excerpt is a dissent arguing the omission was not harmless because jurors reasonably could have assigned greater blame if allowed to consider statutory violations.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| May a jury consider negligence per se (statutory violations) when apportioning factual cause/"conduct"? | Grove: Yes — jurors should be allowed to measure conduct against legal duties; statutory breaches are relevant to comparative blame. | Port Authority: No — "conduct" for factual-cause allocation is the bare act that led to injury (e.g., stepping into the street); method of breach is immaterial. | Majority: "Conduct" limited to factual cause; negligence per se not required for allocation. Dissent: jurors should consider statutory violations. |
| Did the trial court err by refusing a negligence-per-se instruction? | Grove: Refusal was error because jury asked and evidence implicated statutory violations. | Port Authority: Any omission was harmless because jury already found negligence and factual causation. | Majority: Error was harmless. Dissent: Not harmless given jury’s close allocation result. |
| Do standard comparative-negligence instructions properly define "conduct" for allocation purposes? | Grove: No — standard instruction without clarification permits jurors to consider qualitative context, including law violations. | Port Authority: Yes — standard instruction confines jurors to apportioning based on factual cause alone. | Majority: Standard instruction sufficient. Dissent: Instruction was ambiguous and should have allowed consideration of statutory breaches. |
| Should jurors' common-sense qualitative judgments about blameworthiness inform apportionment? | Grove: Yes — jurors naturally evaluate moral/qualitative aspects (e.g., flouting safety laws) when assigning percentages. | Port Authority: No — apportionment should focus on causal contribution, not moral labeling. | Dissent: Jurors may and should make qualitative judgments; excluding them risks misleading the jury. |
Key Cases Cited
- Stewart v. Motts, 654 A.2d 535 (Pa. 1995) (standard for adequacy of jury charge: must not "mislead or confuse").
- Boyde v. California, 494 U.S. 370 (1990) (jurors interpret instructions using ordinary understanding, not technical parsing).
- Grove v. Port Auth. of Allegheny Cty., 178 A.3d 239 (Pa. Cmwlth. 2018) (appellate discussion/dissent below about factual-cause allocation and negligence per se).
- Sodders v. Fry, 32 A.3d 882 (Pa. Cmwlth. 2011) (negligence per se may establish breach but plaintiff must still prove proximate/legal cause).