Appellants Roger Maher and Carl Roell ("Maher and Roell") appeal from the order granting summary judgment in favor of Federal Signal Corporation ("Federal Signal"), *1068 and dismissing all remaining claims. We affirm.

Maher and Roell are members of the Pittsburgh Bureau of Fire. They are parties in a mass tort products liability action commenced by approximately 247 firefighters who allegedly suffered permanent hearing loss due to exposure to siren noise from the Q2B siren ("Q-siren") manufactured by Federal Signal. Their cases were consolidated for trial with cases filed by six other firefighters (collectively "plaintiff firefighters") under the Dunlap caption and designated as Trial Group 1A. 1

The underlying complaint of the plaintiff firefighters is that the Q-siren is unreasonably dangerous and defective and negligently designed because it emits omnidirectional, high-decibel sound that, over time, causes permanent hearing loss to firefighters occupying the firetruck. They offered the expert testimony of Christopher J. Struck, an acoustics expert, to the effect that a shroud, particularly the Bromley Shroud, could be applied to the Q-siren to divert the noise to the front of the vehicle while still meeting industry standards for warning sirens. Instead of emitting sound in all directions, the shroud would funnel the noise in a cone-shaped direction in front of the firetruck, thereby reducing the noise level in the cab of that vehicle.

Federal Signal argued that attaching a shroud to reduce the angle at which the sound was emitted would render its product less safe for the pedestrians and motorists it was intended to warn. It pointed to the danger presented by the proposed design to motorists and pedestrians, especially at intersections, as the shroud would reduce the noise level of the siren to the rear and sides of the vehicle. The company contended that plaintiff firefighters had failed to offer prima facie evidence that the shrouded alternative was effective and safe for all users, including the pedestrians and motorists it was intended to warn.

After the completion of discovery and the filing of all expert reports, Federal Signal filed a Frye 2 motion to preclude the expert testimony of Mr. Struck, and a motion for summary judgment on the strict liability claim. The Group 1A plaintiff firefighters opposed both motions. Following argument on January 21, 2016, the trial court denied the Frye motion, but granted summary judgment on the strict products liability claim. In response to Federal Signal's motion for clarification of the order, the trial court pointed out that the plaintiff firefighters' negligence claim was still outstanding, and granted leave to Federal Signal to seek summary judgment on that claim as well. Federal Signal filed the motion, the firefighter plaintiffs opposed it, and on October 21, 2016, the trial court granted summary judgment in favor of Federal Signal on the remaining negligence claims.

Maher and Roell timely appealed and complied with the trial court's order to file a Pa.R.A.P. 1925(b) concise statement of errors complained of on appeal, and the trial court penned its Rule 1925(a) opinion. They raise one issue for our review:

Whether the [t]rial [c]ourt made an error of law in granting [Federal Signal's] [m]otion for [s]ummary [j]udgment and dismissing the action due to the lack of expert testimony on the issue of whether the proposed feasible alternative design "will provide as much protection *1069 to motorists, pedestrians, and firefighters occupying the fire truck as the design of the Federal Signal siren that provides unrestricted 360-degree noise projection." Memorandum of the Hon. R. Stanton Wettick, Jr., [4/14/16, at 8.]

Appellants' brief at 4.

It is well settled that "summary judgment is appropriate only in those cases where the record clearly demonstrates that there is no genuine issue of material fact and that the moving party is entitled to judgment as a matter of law." Truax v. Roulhac , 126 A.3d 991 , 996 (Pa.Super. 2015) ( en banc ) (quoting Summers v. Certainteed Corp. , 606 Pa. 294 , 997 A.2d 1152 , 1159 (2010) ). In ruling on such a motion, "the trial court must take all facts of record and reasonable inferences therefrom in a light most favorable to the non-moving party" and "resolve all doubts as to the existence of a genuine issue of material fact against the moving party." Id. "Where the non-moving party bears the burden of proof on an issue, he may not merely rely on his pleadings or answers in order to survive summary judgment." Babb v. Ctr. Cmty. Hosp. , 47 A.3d 1214 , 1223 (Pa.Super. 2012) (citations omitted). "[F]ailure of a non-moving party to adduce sufficient evidence on an issue essential to his case and on which he bears the burden of proof establishes the entitlement of the moving party to judgment as a matter of law." 3 Id. Thus, "a proper grant of summary judgment depends upon an evidentiary record that either (1) shows the material facts are undisputed or (2) contains insufficient facts to make out a prima facie cause of action or defense." Basile v. H & R Block, Inc. , 777 A.2d 95 , 100 (Pa.Super. 2001) (quoting McCarthy v. Dan Lepore & Sons Co., Inc. , 724 A.2d 938 , 940 (Pa.Super. 1998) ).

On appeal, this Court

may reverse a grant of summary judgment if there has been an error of law or an abuse of discretion. But the issue as to whether there are no genuine issues as to any material fact presents a question of law, and therefore, on that question our standard of review is de novo . This means we need not defer to the determinations made by the lower tribunals.

Truax , supra at 996 (quoting Weaver v. Lancaster Newspapers, Inc. , 592 Pa. 458 , 926 A.2d 899 , 902-03 (2007) ). "To the extent that this Court must resolve a question of law, we shall review the grant of summary judgment in the context of the entire record." Id. at 996-97 .

Thus, our responsibility as an appellate court is to determine whether the record either establishes that the material facts are undisputed or contains insufficient evidence of facts to make out a prima facie cause of action, such that there is no issue to be decided by the fact-finder. If there is evidence that would allow a fact-finder to render a verdict in favor of the non-moving party, then summary judgment should be denied.

Id. (quoting Reeser v. NGK N. Am., Inc. , 14 A.3d 896 , 898 (Pa.Super. 2011) ) (citations omitted).

Implicated herein is Pennsylvania's strict products liability law governing design defects. The *1070 Restatement (Second) of Torts § 402A remains the law of Pennsylvania in such actions. In Tincher v. Omega Flex, 628 Pa. 296 , 104 A.3d 328 , 399 (2014), our Supreme Court declined to adopt the Restatement (Third) of Torts, but clarified that a plaintiff could prove defective design in two ways: 1) by showing that the product's danger is unknowable and unacceptable to the average consumer (the consumer expectations test); or 2) that a reasonable person would conclude that the probability and gravity of the harm caused by the product outweigh the burden or cost of taking precautions (the risk-utility standard).

Plaintiff firefighters proceeded under the risk-utility test. The relevant factors for such an analysis were set forth in Tincher :

1. The usefulness and desirability of the product - its utility to the user and the public as a whole.

2. The safety aspects of the product - the likelihood that it will cause injury, and the probable seriousness of the injury.

3. The availability of a substitute product which would meet the same need and not be as unsafe.

4. The manufacturer's ability to eliminate the unsafe character of the product without impairing its usefulness or making it too expensive to maintain its utility.

5. The user's ability to avoid danger by the exercise of care in the use of the product.

6. The user's anticipated awareness of the dangers inherent in the product and their availability, because of general public knowledge of the obvious condition of the product, or the existence of suitable warnings or instructions.

7. The feasibility, on the part of the manufacturer, of spreading the loss by setting the price of the product or carrying liability insurance.

Tincher , supra at 398-99 (quoting John W. Wade, On the Nature of Strict Tort Liability for Products , 44 Miss. L. J. 825 , 837-38 (1973) ). The Tincher Court recognized that trial courts would not necessarily have the expertise to balance these factors, and thus, in the majority of cases, experts would be required to analyze them.

According to Maher and Roell, their design for the shrouded siren would eliminate the unsafe character of the siren without impairing its usefulness as a warning device. They claim that the trial court erred in requiring expert testimony to the effect that the proposed alternative design would provide as much protection to motorists, pedestrians, and firefighters occupying the fire truck as Federal Signal's Q-siren. They contend first that the trial court looked at the risk-utility test, focused on the third factor, and incorrectly expanded it to include non-users of the product, namely pedestrians and motorists. In addition, Maher and Roell contend that such expert testimony is unnecessary in light of evidence that the proposed alternative design, the shrouded siren, meets all industry requirements set forth in SAE J1849. 4

Federal Signal counters first that Maher and Roell's argument based on the SAE standard is not properly before this Court, as the standard and testimony regarding its promulgation were only submitted to the trial court with the motion for reconsideration. They maintain that evidence that was not before the trial court in ruling *1071 on the motion for summary judgment is not part of the record on appeal.

Second, Federal Signal argues that the trial court correctly granted summary judgment since Maher and Roell did not present expert testimony necessary for a prima facie case. Not only were the plaintiff firefighters required to demonstrate a feasible alternative design, but also that the alternative design was effective and did not introduce a new or greater hazard. Mr. Struck's expert testimony did not address the general effectiveness of the shrouded siren versus the Q-siren vis-à-vis the public.

Third, Federal Signal argues that even if the SAE standard is considered, compliance therewith is not de facto proof that a siren is safe and effective. It maintains that the standard only sets minimum noise outputs in the front of the vehicle and does not contemplate the general risk to pedestrians and motorists.

Finally, Federal Signal maintains that the trial court properly considered the safety of the public, namely pedestrians and motorists, as well as firefighters in determining whether the product's design was defective. It points to language in Tincher , supra at 399, advising courts to consider the "utility to the user and to the public as a whole." Federal Signal observes that Maher and Roell cite no authority in support of their contention that pedestrians and motorists are not users of the warning device.

As the trial court noted, sirens are dangerous products. They emit noise calculated to warn motorists and pedestrians of the presence of a speeding emergency vehicle. In order to prevail in the instant products liability action, plaintiff firefighters had to prove that Federal Signal's Q-siren was unreasonably dangerous, and that exposure to the noise caused the firefighters' hearing loss. The trial court found that the medical evidence in the record, if credited by the factfinder, established the requisite causation. Unreasonably dangerous design could be established with proof of an alternative feasible design that would reduce the decibel level of the noise experienced by the firefighters, but still provide effective warnings to the public. 5 The court found that proof lacking.

Plaintiff firefighters' acoustics expert, Mr. Struck, presented an alternative siren design that would afford greater protection for firefighters from hearing loss by adding a Bromley Shroud, which would direct the noise to the front of the fire truck and away from the cab. However, he focused solely on the benefits of the shrouded design to the firefighters occupying the cab of the firetruck; he did not opine whether that design would protect the public. The expert offered no opinion whether this alternative design was as effective in warning all users, including pedestrians and motorists, located to the side and rear of the vehicle. In addition, Mr. Struck expressly stated that he had no opinion as to what specific angle the siren needed to project in order to be effective as a warning device, and that he "would simply defer to the industry standard, the SAE J1849." Struck Deposition, 4/19/13, at 150.

The trial court concluded that, after Tincher , expert testimony was required regarding the alternative product's effectiveness as a warning device for all users. It rejected the notion that the SAE J1849 *1072 standard, or the proposed alternative's compliance with the standard, was a substitute for such expert testimony, as it was only a minimum industry standard. 6 We agree for the reasons that follow.

For decades after Section 402A became the law of Pennsylvania, defendants in strict products liability actions sought to introduce proof of their product's compliance with minimum industry standards in order to negate the existence of a design defect. We held such evidence to be inadmissible under the then-prevailing law of Azzarello v. Black Bros. Co. , 480 Pa. 547 , 391 A.2d 1020 (1978) ( overruled by Tincher , supra ), reasoning that compliance with minimum standards is not proof of non-defective design and that negligence concepts have no place in strict liability.

This Court recently noted in Webb v. Volvo Cars of America, LLC , 148 A.3d 473 (Pa.Super. 2016), that the prohibition against evidence of government or industry standards had "its genesis in the now-defunct Azzarello regime." Id. at 483 . Nonetheless, we concluded therein that the overruling of Azzarello did not provide a sufficient basis to disregard the evidentiary rule espoused in Lewis v. Coffing Hoist Div., Duff - Norton Co., Inc. , 515 Pa. 334 , 528 A.2d 590 (1987), and Gaudio v. Ford Motor Co. , 976 A.2d 524 , 547 (Pa.Super. 2009), that a product's compliance with government standards is irrelevant and inadmissible in a strict products liability action. 7 Id. at 483. In particular, we found that Tincher did not undermine the concern, identified in Lewis , that defective design could be widespread in the industry, and hence, evidence that a product comported with industry standards was not proof of non-defectiveness. See Lewis , supra at 594. 8

*1073 The question herein is whether Maher and Roell adduced sufficient evidence on the effectiveness of their proposed alternative design to withstand summary judgment. They argue that proof that their design comported with industry standards is enough to prove its effectiveness for all users.

The trial court concluded that expert opinion to that effect was necessary and that, although Mr. Struck opined that the proposed alternative design was safer for firefighters, he did not offer any expert opinion regarding the effectiveness of that design in warning motorists and pedestrians. In lieu of expert opinion on that subject, Mr. Struck merely deferred to the SAE standards, which are minimum requirements only.

In ruling on the motion, the trial court considered evidence of the industry standards and the compliance of the firefighters' proposed design with those standards. The court determined that compliance with standards alone was not prima facie evidence that a product's design was non-defective and effective, and held that expert opinion was necessary to establish that the proposed alternative design was effective and met the need of all users, not just firefighters.

At issue are technical matters that are beyond the ken of ordinary persons and within the knowledge of expert witnesses available to the parties. We agree with the trial court that expert opinion on the effectiveness of the alternative design as a warning for pedestrians and motorists was required, and that it was lacking herein. 9 While Maher and Roell offered expert opinion that their proposed alternative design was safer for firefighters, they failed to adduce competent expert opinion that it also met the need for an effective warning for motorists and pedestrians. Maher and Roell's proof that their proposed design met the industry standard was not enough to establish a prima facie case that it was more effective for all users than the Q-siren.

Order affirmed.

Judge Ott joins the opinion.

Judge Lazarus files a dissenting opinion.

I am constrained to disagree with the learned Majority's conclusion that this Court's decision in Webb definitively reestablished a bright line evidentiary rule barring evidence of a product's compliance *1074 with governmental and/or industry standards. Therefore, I respectfully dissent.

Prior to Tincher , Pennsylvania courts had long prohibited defendants from including governmental and industry standard evidence in cases that implicated a so-called cost/risk-benefit analysis. In Lewis , our Supreme Court determined that evidence of industry standards relating to the design of a product in strict products liability cases creates a strong likelihood of diverting the jury's attention away from the product to the reasonableness of the manufacturer's conduct in choosing its design. Later, in Gaudio , this Court similarly held that manufacturers could not attempt to prove the quality of the design of their product by showing that it comports with industry or governmental standards or is in widespread industry use. However, as the Majority correctly states, the Lewis and Gaudio Courts premised these evidentiary rules on Azzarello , which strictly prohibited the introduction of negligence concepts into strict liability claims. Later, the Tincher Court concluded that the firm division between strict liability and negligence concepts no longer exists and reopened the question of whether the prohibition against governmental and industry standard evidence was still valid.

Following Tincher , the Webb Court revisited whether courts must prohibit defendants from presenting evidence of governmental or industry standard evidence in strict liability cases. The plaintiff in Webb was involved in a fatal automobile crash between a 1997 Volvo sedan and another vehicle. Webb, like Maher and Roell here, sued Volvo Cars of North America on various theories of liability, including both negligence and strict product liability, alleging the Volvo sedan was defective because it lacked rear door bars to prevent side-impact intrusion during a side-impact collision. Following a jury trial, the trial court entered non-suit on Webb's negligence claim against Volvo and later directed a verdict in favor of Volvo on Webb's strict product liability claim. In doing so, the trial court allowed the jury to consider Federal Motor Vehicle Safety Standards ("FMVSS") evidence proffered by Volvo while deliberating Webb's strict product liability claim, over Webb's objection. On appeal, Webb argued that governmental standard evidence, i.e., the FMVSS evidence proffered by Volvo, became irrelevant to Webb's strict product liability claim after the negligence claim was non-suited. The Webb Court determined that the trial court erred in permitting the jury to consider FMVSS evidence in connection with Webb's strict product liability claims. Specifically, the Court concluded that the acknowledgement of the commonalities between strict product liability and negligence theory, as stated in Tincher , does not provide a sufficient basis for disregarding the evidentiary rules expressed in Lewis and Gaudio prohibiting governmental and industry standard evidence in strict product liability cases. The Majority believes the Webb Court, in stating that Tincher did not provide "a sufficient basis for disregarding the evidentiary rule expressed in Lewis and Ga u dio ," definitively reestablished a bright line rule barring governmental/industry standard evidence in strict product liability cases. I disagree.

I believe that, contrary to the Majority's assertion, the Webb holding is narrow and does not sufficiently discuss the negligence and strict liability principles underlying the evidentiary rule barring governmental/industry standard evidence. To the extent that the Webb Court discusses its rationale for barring the FMVSS evidence proffered by Volvo, it states only that Tincher does not undermine the rationale that that "a defective design could be widespread in an industry."

*1075 Webb , 148 A.3d at 483 . The Majority echoes this in its opinion. However, the Webb Court goes on to say that

[w]hile it is clear after Tincher that the firm division between strict liability and negligence concepts no longer exists, it is not clear that the prohibition on evidence of government or industry standards no longer applies.

...

It is possible that government/industry standards could be admissible under [the consumer expectation and risk-utility] theories[.] ... It is also possible that the admissibility of such evidence will depend upon the circumstances of a case.

Webb , 148 A.3d at 483 (emphasis added).

Based on the foregoing, I believe we must interpret the Webb Court's holding narrowly. The Webb Court explicitly states only that the Tincher decision does not undermine the rationale that a defective design could be widespread in an industry, which I believe is distinct from the rationale the Majority relies on. 1 The Webb Court also stated that it "believe[s] the continued vitality of the prohibition on governmental and industry standards evidence is a question best addressed in a post- Tincher case." Id. I believe this belies the Majority's contention that the validity of the evidentiary rule in question remains intact.

In other words, the Webb Court acknowledges the necessity of additional post- Tincher cases discussing the negligence and strict liability principles underlying the reestablishment of a bright line rule definitively barring government/industry standard evidence. Namely, it calls for cases discussing the fundamental principle underlying the decisions in Lewis and Gaudio - i.e., governmental and industry standard evidence creates a strong likelihood of diverting the jury's attention from the product to the reasonableness of the manufacturer's conduct in choosing its design. The Webb court simply did not rely on such a rationale in determining that the trial court erred in permitting the jury to consider FMVSS evidence following non-suit of plaintiff's negligence claim; the reasonableness calculus critical to negligence theory was sparsely discussed. See generally Webb , 148 A.3d at 483 . Therefore, I believe the question of whether governmental/industry standard evidence is admissible in some products liability cases post- Tincher remains mostly unanswered.

It remains, though, that paramount to strict product liability theory, as Lewis and Gaudio suggest, is the understanding that liability attaches regardless of the reasonableness of a manufacturer's actions even if the defendant exercised all possible due care. See Restatement (Second) of Torts § 402A. Accordingly, to prove a strict products liability claim, a plaintiff need only show that a seller (i.e., a manufacturer or distributor) placed in the market a product in a defective condition. Post- Tincher analysis should focus on the product itself rather than the reasonableness of the manufacturing, design, or distribution the product. Therefore, I agree that nothing in Tincher , as recognized by *1076 Webb , necessarily allows factfinders to consider governmental or industry standard evidence as dispositive in strict liability cases.

Even so, a plaintiff in a strict product liability action, like Maher and Roell here, may open the door to the introduction by a defendant of evidence of compliance with industry or governmental standards if a plaintiff introduces witness testimony regarding such standards during direct or cross-examination. Plaintiffs may be willing to assume this risk, but to the extent that a plaintiff introduces governmental/industry standard evidence, the opening so created should be reasonably related in scope to the substance of the offending testimony. See Gaudio , 976 A.2d at 544 .

Here, Maher and Roell, not Federal Signal, proffered through Expert Struck testimony regarding industry standards for sirens, but only to show their alternative design was effective. As proffered, such evidence does not: (1) draw our attention to the reasonableness of Federal Signal's conduct in choosing its design; or (2) suggest defective designs are widespread in the siren industry. Rather, it purportedly proves that a different design that comports with siren industry standards is still effective.

In sum, I do not believe this Court's decision in Webb stands for the broad holding the Majority characterizes in its opinion. The Webb Court, multiple times, expressly states that the question of whether governmental or industry standard evidence is admissible in strict products liability cases remains open. See generally Webb , 148 A.3d at 483 . Therefore, I disagree that we must disregard the evidence in this case purporting to show Maher and Roell's alternative design is effective for purposes of the risk-utility standard. The evidence of record is sufficient to make a prima facie case that the Q-siren was defective and Maher and Roell's proposed alternative design provided as much protection to the public as the Q-siren. Thus, plaintiff's product liability claim should have survived summary judgment.

Accordingly, I would reverse the order of the trial court granting summary judgment in favor of Federal Signal.