OPINION OF THE COURT
I. Introduction
In this appeal we address the arbitrability of a dispute regarding coverage under an automobile insurance policy. The insurer, State Farm Mutual Automobile Insurance Company (“State Farm”), argues that the dispute should be settled in the courts, while the insured, Mary Coviello (“Coviello”), insists that it should be settled via arbitration, pursuant to an arbitration clause in the relevant insurance policy. The District Court credited Coviello’s arguments, concluding that “[t]he arbitration clause clearly encompasses [the] coverage dispute” between the parties, and therefore dismissed State Farm’s declaratory judgment action. App., Vol. I, at A-12.
State Farm contends that resolution of the parties’ dispute turns on a question of public policy, and urges us to reverse the *712 District Court based on the broad proposition that under Pennsylvania law, the courts — and not arbitrators — should assume jurisdiction over such matters. Alternatively, State Farm argues that the District Court erred in ruling that the dispute falls within the scope of the relevant arbitration provision. We agree with State Farm that resolution of the parties’ disagreement hinges on a question of public policy; moreover, we believe that whether this dictates that the dispute should be heard in the courts is a question that could have broad future implications, and is worthy of our consideration. However, we base our decision on an alternative ground presented by the parties, namely, the scope of the arbitration provision. In our view, the Pennsylvania courts would conclude that they should take jurisdiction over this matter because the arbitration clause at issue does not encompass the parties’ coverage dispute. We will, reverse and remand.
II. Facts and Procedural Background
The parties have stipulated to many of the relevant facts in this case, and no material facts are in dispute. On June 23, 1998, Coviello was injured in a single-vehicle accident in Dickson City, Pennsylvania. She was a passenger in an automobile operated by her husband, Leonard Coviel-lo. The Coviellos admit that Leonard was at fault in the accident, which is not surprising given that the accident did not involve any other vehicles. Coviello and her husband were the registered owners of the automobile that was involved in the accident, and they held an insurance policy with State Farm that covered their automobile. Coviello made a liability claim against Leonard under this policy and received the $100,000 policy limit.
At the time of the accident, Ann Coviel-lo, the Coviellos’ daughter, resided with her parents. Ann had her own automobile and was. the named insured on a separate insurance policy, also issued by State Farm. Coviello seeks underinsured motorist benefits under her daughter Ann’s policy, based on the reasoning that the vehicle she and her husband Leonard owned, and which Coviello occupied at the time of the accident, qualifies as an “underinsured motor vehicle” under Ann’s policy. State Farm does not contest that Coviello qualifies as “an insured” person under her daughter Ann’s policy.
State Farm, however, denies that Ann’s policy provides underinsured motorist coverage .to Coviello under these circumstances. State Farm points to what is commonly called the “family vehicle exclusion” in Ann’s policy, which states that “[a]n underinsured motor vehicle does not include a land motor vehicle ... (2) furnished for the regular use of you, your spouse or any relative.” App., Vol. II, at A-45 (emphasis added). The parties have stipulated that Coviello is a “relative” of Ann within the meaning of her daughter’s policy.
State Farm filed a complaint in the District Court on April 12, 1999, seeking a declaration that Coviello is not entitled to underinsured motorist coverage under Ann’s policy because the “family vehicle exclusion” is applicable and should bar her claim for benefits. Coviello filed a motion to dismiss pursuant to Federal Rule of Civil Procedure 12(b)(1) and 12(b)(6), arguing that the dispute between the parties is subject to arbitration under the terms of the policy. On November 22, 1999, the District Court granted the Coviellos’ motion to dismiss. State Farm moved for reconsideration, which, the District Court denied on February 17, 2000.
III. Jurisdiction and Standard of Review
We have jurisdiction over this appeal pursuant to 28 U.S.C. § 1291.
See Nationwide Ins. Co. v. Patterson,
IV. Discussion
A.
This diversity action is governed by substantive state law.
See Erie R.R. Co. v. Tompkins,
State Farm urges that, regardless of whether the policy declares that the parties’ dispute should proceed to arbitration, State Farm’s declaratory judgment action should not have been dismissed because the instant dispute involves a question of public policy that should be decided by the courts, and not by an arbitrator. In State Farm’s view, the only way that Coviello can prevail in her pursuit of underinsured motorist benefits is if the “family vehicle exclusion” in Ann’s policy does not apply. State Farm argues that the only way the exclusion would not apply to the facts of this case is if the exclusion itself were declared invalid and unenforceable as against the public policy underlying the Pennsylvania Motor Vehicle Financial Responsibility Law (“MVFRL”). Relying principally on
Warner v. Continental/CNA Insurance Cos.,
Coviello responds that
Warner
is inapplicable, because she is not asserting a challenge based on public policy grounds.
*714
Rather, she states that - her position “is based on Pennsylvania appellate court precedent — not public policy.” Appellee’s Br. at 9. She also argues that, even if the applicability of the exclusion to her case raises public policy issues, arbitration is nonetheless the appropriate forum, in accordance with our decision in
Nationwide Insurance Co. v. Patterson,
As we assess Coviello’s arguments, we think it is clear that she is challenging the applicability of the “family vehicle exclusion” on public policy grounds. The only way that Coviello can succeed on her claim is if the exclusion is invalidated.
2
According to the “Pennsylvania appellate court precedent” that Coviello relies upon, the exclusion should be invalidated only if, under the circumstances of a particular case, it violates public policy as expressed by the Pennsylvania MVFRL.
See Marroquin v. Mut. Benefit Ins. Co.,
Having determined that the applicability of the “family vehicle exclusion” is a question of public policy, we face the thorny issue of whether this dictates that the parties’ dispute be resolved by the courts, rather than by arbitration. Coviello offers our opinion in
Patterson,
where we held arbitration to be appropriate, as authority for the proposition that public policy issues may be arbitrated. However, the parties’ dispute in
Patterson
was based in part on public policy, and in part on contract principles,
see Patterson,
In
Warner,
the Pennsylvania Superior Court stated, as we referenced above, that “both this Court and the [Pennsylvania] Supreme Court have repeatedly approved the use of a declaratory judgment action despite the presence of an arbitration agreement, where the disputed issue is whether a particular provision of an insurance policy is contrary to a constitutional, legislative, or administrative mandate.”
Warner,
Moreover,
Warner
appears to be in direct conflict with the Pennsylvania Superi- or Court’s earlier decision in
Pitts,
in which the court held that when a dispute falls within the scope of an insurance policy’s arbitration provision, the arbitrators “clearly have the jurisdiction to consider” public policy issues.
Pitts,
State Farm draws our attention to the Pennsylvania Supreme Court’s decision in Windrim, but in our view, it falls short of offering a clear directive applicable to the question before us. In Windrim, the insured sought underinsured motorist benefits under a family member’s policy, but the insurance company denied the claim based on the “family vehicle exclusion” in the policy. See id. at 1155. The insured argued that the exclusion violated public policy as expressed by the Pennsylvania MVFRL and filed a motion to compel arbitration, while the insurance company filed a counterclaim for a declaratory judgment that the exclusion was valid and enforceable. See id. at 1155-56. The opinion of the Pennsylvania Supreme Court indicates that the trial court granted the motion for arbitration, but nevertheless ruled that the exclusion was invalid. See id. at 1156. On appeal, the Pennsylvania Supreme Court held the exclusion to be valid, but did not discuss the issue of arbitrability or the trial court’s curious decision to grant arbitration on the validity of the exclusion and yet rule on this issue itself. See id. at 1156-58.
From State Farm’s perspective, Win-drim is significant because the Pennsylvania Supreme Court addressed the merits of the public policy question regarding the “family vehicle exclusion,” even though the parties’ dispute was arbitrable. However, the Pennsylvania Supreme Court in Win-drim never discussed the jurisdictional aspects of the dispute. While the Windrim court’s disposition of the case might tacitly recognize that courts may exercise jurisdiction over a declaratory judgment action, even when the parties’ dispute falls within the scope of arbitration, the court’s failure to address the issue explicitly causes us to hesitate before declaring that Windrim authoritatively establishes this principle.
The foregoing review of Pennsylvania precedent demonstrates that we lack clear direction on this important issue. Guided by the principle that as a federal court sitting in diversity, our task is to apply state law and not to form it,
see, e.g., Keystone Aeronautics Corp. v. R.J. Enstrom Corp.,
B.
Under Pennsylvania law, the determination of whether an issue must be submitted to arbitration depends upon (1) whether the parties entered into an agreement to arbitrate, and (2) whether the dispute falls within the scope of that agreement.
See, e.g., Flightways Corp. v. Keystone Helicopter Corp.,
*717 The policy’s arbitration provision states in pertinent part:
Section III — Uninsured Motor Vehicle and Underinsured Motor Vehicle Coverage
Deciding Fault and Amount— Coverages U, U3, W and W3
Two questions must be decided by agreement between the insured and us:
(1) Is the insured legally entitled to collect compensatory damages from the owner or driver of an uninsured motor vehicle or under-insured motor vehicle; and
(2) If so, in what amount?
If there is no agreement, these two questions shall be decided by arbitration at the request of the insured or us. The arbitrators’ decision shall be limited to these two questions.
App., Vol. II, at A-45.
Based upon its reading of Ann’s insurance policy, the District Court held that the arbitration clause in the policy “clearly encompasses [the parties’] coverage dispute.” App., Vol. I, at A-12. The parties assume, without discussion, that our review of this conclusion is plenary, and there is relevant authority to support this position.
6
However, there also is authority to the effect that we should review the District Court’s conclusion for clear error, because the District Court was interpreting contract language in order to discern the parties’ intent as to the scope of the arbitration provision.
See, e.g., Paine-Webber Inc. v. Hartmann,
It is well settled that when interpreting a contract, the Pennsylvania courts look to the words of the agreement in order to determine the parties’ intent.
See, e.g., Steuart v. McChesney,
According to the arbitration provision of the policy, arbitration is not triggered unless there is a disagreement involving Question (1) (“Is the insured legally entitled to collect compensatory damages from the owner or driver of an uninsured motor vehicle or underinsured motor vehicle?”) or Question (2) (“If so, in what amount?”). Put simply, there must be a disagreement about Coviello’s legal entitlement to collect compensatory damages, or about the amount of damages. The title of the provision — ’“Deciding Fault and Amount” — underscores its limited scope. Neither party has pointed to anything in the language of the arbitration provision that suggests that we should interpret it otherwise.
It is clear to us that neither fault nor amount are at issue in this case. Both parties agree that Leonard was at fault in the accident, and neither party has indicated to us, either in briefs or oral argument, *718 that there is any disagreement about the specific amount of damages for which Leonard might be legally liable to his wife, Mary. Instead, what is in dispute is the applicability of the “family vehicle exclusion” in Ann’s insurance policy and whether Ann’s policy casts a wide enough net to cover the situation at hand. But that coverage question is separate and distinct from the legal question of whether Coviello is “legally entitled to collect compensatory damages” from her husband, Leonard. Therefore, based on the unambiguous language of the policy, the dispute in this case does not appear to fall within the scope of the arbitration provision. 7
Coviello urges, however, that the Pennsylvania Supreme Court has endorsed a broad reading of arbitration provisions dealing with underinsured motorist coverage in automobile insurance contracts.
See, e.g., Borgia,
What Coviello fails to note, however, is that when the Pennsylvania Supreme Court has broadly construed underinsured motorist arbitration provisions, the provisions themselves have contained no express limitation on their scope. This was an important fact in the
Brennan
decision, which specifically noted the “broad scope of authority” that the provision gave the
*719
arbitrators.
Id.
at 583. The arbitration provision at issue there stated that if there was a disagreement, then arbitration would occur, without explicitly stating that the arbitration should be confined to the areas of disagreement. In fact, we detect this very reasoning at work in an unbroken line of cases stretching back to
National Grange Mutual Insurance Co. v. Kuhn,
By contrast, the arbitration clause in Ann’s insurance policy
does
contain an express limitation on its scope. As noted above, the clause specifically states that “[t]he arbitrators’ decision shall be limited to these two questions,” meaning Questions (1) and (2), which describe fault and amount, respectively.
9
This is in stark contrast to the situation in
Brennan,
where the court noted that the policy language placed “no' limit to the jurisdiction of the arbitrators.”
Brennan,
In reaching this conclusion, we break no new ground under Pennsylvania law. In its most recent pronouncement on arbitration clauses in automobile insurance policies, the Pennsylvania Supreme Court, after discussing the
Brennan
case at length, observed that an insurance company could easily limit the scope of arbitration.
See Borgia,
Accordingly, we hold that under Pennsylvania law, the parties’ coverage dispute in this case does not fall within the scope of the arbitration clause in Ann Coviello’s insurance policy. The order of the District Court granting the Coviellos’ motion to dismiss will be REVERSED and the case REMANDED for further proceedings consistent with this opinion.
Notes
. We recognize that when construing or enforcing an arbitration clause, even a federal court sitting in diversity might be obliged to apply federal law if the matter falls within the ambit of the Federal Arbitration Act, 9 U.S.C. §§ 1-16. Federal law should apply if an arbitration agreement is connected to a transaction involving interstate commerce.
See, e.g., PaineWebber Inc. v. Hartmann,
. The "family vehicle exclusion” in Ann’s policy states that "[a]n underinsured motor vehicle does not include a land motor vehicle ... furnished for the regular use of you, your spouse or - any relative.” Coviello has not suggested that this language is unclear or ambiguous. Nor does she dispute that she is a "relative” of her daughter Ann within the meaning of the policy. Further, Coviello cannot deny that the automobile involved in the accident was “a land motor vehicle” furnished for her or her husband's "regular use.” Accordingly, Coviello does not dispute that the plain language of the "family vehicle exclusion” clearly and unambiguously bars her from recovering underinsured motorist benefits under Ann's policy.
. The District Court concluded that Coviello was not challenging the "family vehicle exclusion” on public policy grounds, but merely "assertfing] that Mary Coviello is an insured for [underinsured motorist] purposes under Ann Coviello's policy.” App., Vol. I, at A-10. However, we do not view this as a meaningful distinction, because as discussed above, the only possible way that Coviello could collect underinsured motorist benefits under Ann’s policy is if she could have the exclusion invalidated on public policy grounds. Perhaps the District Court was diverted by its mistaken assumption that the "threshold issue” in the case is "whether Mary Coviello qualifies as an insured for [underinsured motorist] purposes under Ann Coviello's policy.” Id. at A-12. Rather than being the "threshold issue,” this coverage issue is, in fact, the ultimate issue in the case — and one that can only be determined by assessing the validity of the "family vehicle exclusion” in Ann’s policy.
. The
Warner
court cited
Azpell v. Old Republic Insurance Co.,
. The
Warner
court also relied upon
Federal Kemper Insurance Co. v. Wales,
. Both parties neglected to cite any authority regarding the proper standard of review, but our decision in
Pritzker v. Merrill Lynch, Peirce, Fenner & Smith,
. Although neither party has suggested it, we note that it could be argued, at least in theory, that Question (1) is implicated here based on a disagreement over the definition of "an un-derinsured motor vehicle,” which is the last term in Question (1). However, in our view, this is not a reasonable reading of the arbitration provision, and therefore we decline to credit it.
See, e.g., Ins. Co. of Evanston v. Bowers,
. The arbitration clause in Brennan provided that:
If we and the covered person disagree whether that person is legally entitled to recover damages from the owners or operator of an underinsured motor vehicle, or do not agree as to the amount of damages, either party may make a written demand for arbitration. In this event each party will select an arbitrator. The two arbitrators will select a third. If they cannot agree within thirty days, either may request that selection be made by a judge of a court having jurisdiction.
Brennan,
. Curiously, the District Court failed to quote or acknowledge this limiting language in the arbitration provision, which may, at least in part, explain the District Court’s erroneous conclusion that the parties’ coverage dispute should proceed to arbitration.
. While the limiting language in the arbitration provision of Ann’s policy forms the basis for our conclusion that the parties’ coverage dispute is not arbitrable, we note that the Pennsylvania Supreme Court recently appears to have retreated somewhat from its suggestion in
Brennan
that all disputes are arbitrable if the arbitration provision does not contain limiting language. In
Borgia,
the Pennsylvania Supreme Court noted that the arbitration provision at issue in
Baverso v. State Farm Ins. Co.,
