OPINION
This is an insurance-coverage dispute involving insurers whose policies contain underinsured-motorist provisions with conflicting “other insurance” clauses. Rather than struggle to untie the Gordian Knot 1 of coverage created by these “other-insurance” clauses, we endeavor yet again to cut it by adopting a rule calling for the pro-rata apportionment of liability among the various insurers providing unmsured/underinsuredmotorist coverage according to the limits of the respective policies involved. 2
Facts and Travel of the Case
On November 10, 1991, plaintiff William Hindson 3 was a passenger in a motor vehicle operated by Joseph B. Lukowicz (Lukow-icz) when it was struck from behind by a motor vehicle operated by Michael Casino (Casino). At the time of the accident the Casino vehicle carried liability insurance for $15,000 per person/$30,000 per accident— less than the amount of damages plaintiff claimed he sustained as a result of the accident. The plaintiff notified the insurer of the Lukowicz vehicle, Pennsylvania General Insurance Company (Penn General), 4 as well as his own personal automobile-insurance carrier, Allstate Insurance Company (Allstate), of his intention to file an underin-sured-motorist claim under both of these policies. Both policies contained substantial uninsured/underinsured-motorist coverage: Penn General insuring for a maximum of $300,000 and Allstate providing coverage for $100,000 per person/$300,000 per accident.
However, both insurers’ policies purported to limit their primary liability if other insurance was available to provide underinsured-motorist coverage. The Penn General policy stated that “[i]f there is other applicable similar insurance we will pay only
our share
of the loss.
Our share is the 'proportion that our limit of liability bears to the total of aü applicable
limits.” (Emphases added.) Relying on this language, Penn General asserted that both insurers should be required to share coverage for this loss on a pro-rata basis. In comparison plaintiffs Allstate policy provided that “[i]f the insured person was in, on, getting into or out of a vehicle which is insured for this coverage under another policy, this coverage will be
excess.”
(Emphasis added.) Thus Allstate claims that it is not primarily liable to plaintiff because its policy is “excess” and not “other applicable similar
*684
insurance” as described in the Penn General policy. In support of this argument Allstate cites
Employers Mutual Casualty Co. v. Martin,
When these two insurance companies were unable to agree on how their respective other-insurance clauses should be interpreted, plaintiff filed an action for a declaratory judgment, seeking to have these insurers pay for his covered losses on a pro-rata basis. Arguing that our prior precedents favor plaintiffs pro-rata coverage position, Penn General filed a motion for summary judgment. Allstate promptly objected and responded with its own cross-motion for summary judgment. The motion justice granted Allstate’s motion and declared the Penn General policy to be primary and Allstate’s policy to be excess. Penn General appeals from this judgment. For the reasons explained below, we reverse and hold that in these circumstances pro-rata coverage is the pro bono publico solution to this type of conflicting other-insurance-clause dispute.
Analysis
Under their respective policies, both Penn General and Allstate would be primarily liable to plaintiff if either one was the lone insurer providing coverage. However, when as here other insurance is available to compensate for an insured’s loss, they both seek to limit their liability. Because other under-insured-motorist insurance is available to compensate plaintiff, Penn General contends that it should pay only a proportionate or pro-rata share of the loss based on the ratio between the amounts of insurance provided under the insurers’ individual policies. Allstate on the other hand maintains that because other such insurance is available, it is only responsible for the excess, after the limits on the Penn General policy have been exhausted. In considering how other courts have dealt with such competing other-insurance clauses, two distinct lines of authority emerge. Because this precise issue is one of first impression in Rhode Island, we briefly discuss these separate lines of authority.
The majority position is the one espoused by Allstate. Courts adopting this approach hold “that where an excess clause and a prorata clause appear in concurrently effective automobile liability policies, the prorata clause is disregarded and full effect is given to the excess clause, making the prorata policy the primary insurance.” 16
Couch on Insurance
2d § 62:72 at 580 (rev. ed. 1983); see
also Farmers Insurance Exchange v. Hartford Casualty Insurance Co.,
The courts holding that excess clauses trump pro-rata clauses follow different paths to reach this conclusion. One theory is that when an insurance policy with a pro-rata clause conflicts with a policy with an excess clause, the pro-rata policy has no other insurance to prorate with and it therefore becomes the primary coverage.
See, e.g., Rutgers Casualty Insurance Co. v. State Farm Mutual Insurance Co.,
We have sampled and surveyed the stew of justifications relied upon by those courts that allow excess other-insurance clauses to convert policies with pro-rata other-insurance clauses into the primary coverage.
5
However, we believe that the reasoning of the Supreme Court of Oregon in
Lamb-Weston, Inc. v. Oregon Automobile Insurance Co.,
As the Oregon court points out in
Lamb-Weston,
it could well be argued that some effect should be given to the terms of each policy’s other-insurance clause. If we
adopted
this methodology, then Penn General would pay its pro-rata share of plaintiffs loss and Allstate would pay the excess. But ultimately following this course leads to the same result as the pure pro-rata tack taken by the Oregon court in
Lamb-Weston.
On the one hand, we wish to avoid using an arbitrary, “rock, paper, scissors” approach in comparing other-insurance clauses and then determining which policy or policies should provide primary coverage. On the other hand, we also seek to call at least a temporary halt to the incessant “‘battle of the draftsmen’ ” waged by, between, and among the various insurance companies in these other-insurance-clause cases.
See Brown v. Travelers Insurance Co.,
Accordingly, when as here an insurance policy would provide primary coverage to an insured if it were the only applicable policy, we are of the opinion that the coverage responsibilities of all such insurers should be shared on a pro-rata basis despite the existence of conflicting other-insurance clauses. Our sincere wish is that this denouement brings a belated but welcome armistice to those combat-weary draftsmen still fighting the good fight over which policy’s other-insurance clause boasts the better boil *686 erplate. And our fervent hope is that our cutting of the Gordian Knot will free ensnared insureds like this plaintiff from the coils of such disputes. But even if our wish remains unrequited and our hope is soon dashed (that is, the battling draftsmen rearm anon and retie the Gordian Knot), we will still abide here, with our sword poised and ever at the ready to cut the Knot again.
Conclusion
Penn General’s appeal is sustained, the judgment of the Superior Court is reversed, and the papers in this case are remanded to the Superior Court so that a judgment may be entered that is consistent with this opinion.
Notes
. The story of the Gordian Knot dates from the time of Alexander the Great: “Gordius, a peasant, being chosen king of Phrygia, dedicated his wagon to Jupiter, and fastened the yoke to a beam with a rope of bark so ingeniously that no one could untie it. Alexander was told that 'whoever undid the knot would reign over the whole East’. 'Well then,’ said the conqueror, ‘it is thus I perform the task,' and, so saying, he cut the knot in twain with his sword.” Ivor H. Evans, Brewer’s Dictionary of Phrase and Fable 490-91 (14th ed. 1989).
. In
Pickering v. American Employers Insurance Co.,
. Although Sally Hindson, William’s wife, is also named as a plaintiff, for convenience we refer throughout this opinion to William alone as plaintiff.
. The plaintiff was covered as an insured person under the Penn General policy, which defined "DQnsured” as including "[a]ny other person ‘occupying’ ‘your covered auto.’ ”
. Cases from other jurisdictions reveal a veritable legal potpourri of rationales for determining which insurer should be considered primary.
See, e.g., Transamerican Insurance Co. v. Austin Farm Center, Inc.,
