Palmer, J.
This case requires us to decide whether General Statutes (Rev. to 1989) § 38-175C1 entitles an insured to aggregate the underinsured2 motorist coverage for two vehicles covered under one automobile liability insurance policy if the insured had paid an actuarially appropriate single premium for the underinsured motorist coverage and the policy language expressly excludes the aggregation of coverage. This issue was referred initially to an arbitration panel pursuant to the terms of the policy. A majority of that panel determined that, in the circumstances of this case, the underinsured motorist coverage on the two vehicles could not be aggregated, or “stacked.”3 The trial court subsequently granted the application of the plain[429]*429tiffs, Donald and Kristine Kent as administrators of the estate of Melissa F. Kent, to vacate the award of the arbitration panel. The defendant, Middlesex Mutual Assurance Company, appealed from the judgment of the trial court to the Appellate Court, and we transferred the appeal to this court pursuant to Practice Book § 4023 and General Statutes § 51-199 (c). We reverse the judgment of the trial court.
The parties stipulated to the following facts. The plaintiffs are the named insureds on an automobile liability policy issued by the defendant. On October 13, 1990, the decedent, an insured within the policy’s coverage for underinsured motorist benefits, was killed in an automobile accident caused by the negligence of an underinsured third party. The decedent’s estate recovered $20,000 from the liability insurer of the negligent driver, thereby exhausting the coverage limits of the tortfeasor’s policy. At the time of the accident, the plaintiffs were covered by an automobile insurance policy issued by the defendant on the plaintiffs’ two vehicles. Under that policy, the defendant agreed to pay all sums that the insureds would be legally entitled to recover as damages from the owner of an underinsured vehicle due to any injuries sustained by an insured as a result of an accident arising out of the use of the underinsured vehicle. The policy provided underinsured motorist limits in the amounts of $100,000 per person and $300,000 per accident. The defendant concedes that the damages resulting from the fatal injuries sustained by the decedent exceed $200,000.4 Throughout these proceedings, the plaintiffs have contended that the coverage of $100,000 per person is properly aggregated [430]*430for each of the two insured vehicles so that the defendant is obligated to provide underinsured motorist coverage of $200,000 per person. The defendant has argued, to the contrary, that stacking is not mandated because the insureds had paid a single, actuarially appropriate premium for underinsured motorist benefits in the amounts of $100,000 per person and $300,000 per accident. The defendant relies also on the language of the declarations page of the policy and the insurance application form, which specifies that the maximum benefit available is $100,000.
A majority of the arbitration panel determined that the defendant’s policy provided underinsured motorist coverage in the amount of $100,000 per person and concluded that the plaintiffs were not entitled to any additional payment. The plaintiffs subsequently filed an application to vacate the arbitration award. The trial court concluded that the arbitrators had improperly determined that the plaintiffs were not entitled to aggregate their underinsured motorist coverage for the purpose of determining the total available amount of such coverage, and therefore vacated the award. The defendant claims that the trial court improperly applied the principles of intrapolicy stacking to this case and seeks reinstatement of the arbitrators’ award. The gravamen of the defendant’s argument is that the plaintiffs, who received the benefit for which they had paid, could not reasonably have expected aggregated coverage.
We must consider again the applicability of intrapolicy stacking principles to specific facts and circumstances. See Cohn v. Aetna Ins. Co., 213 Conn. 525, 530, 569 A.2d 541 (1990); Dixon v. Empire Mutual Ins. Co., 189 Conn. 449, 453, 456 A.2d 335 (1983); Nationwide Ins. Co. v. Gode, 187 Conn. 386, 394-97, 446 A.2d [431]*4311059 (1982); Safeco Ins. Co. v. Vetre, 174 Conn. 329, 333-35, 387 A.2d 539 (1978). We have repeatedly held that General Statutes (Rev. to 1989) §§ 38-175a5 and 38-175c,6 [432]*432and § 38-175a-6 (a),7 now § 38a-334-6, of the Regulations of Connecticut State Agencies, which mandate that automobile liability insurance polices include underinsured motorist coverage, do not prohibit the stacking of underinsured motorist coverage for more than one passenger automobile. Covenant Ins. Co. v. Coon, 220 Conn. 30, 35, 594 A.2d 977 (1991); Cohn v. Aetna Ins. Co., supra, 529; Nicolletta v. Nationwide Ins. Co., 211 Conn. 640, 645-46, 560 A.2d 964 (1989); Allstate Ins. Co. v. Ferrante, 201 Conn. 478, 481-82, 518 A.2d 373 (1986); Dixon v. Empire Mutual Ins. Co., supra, 452-53; Nationwide Ins. Co. v. Gode, supra; Safeco Ins. Co. v. Vetre, supra, 332-33; see also Pecker v. Aetna Casualty & Surety Co., 171 Conn. 443, 448-53, 370 A.2d 1006 (1976). Indeed, we have found stacking to be available when the insured has paid separate premiums for the underinsured motorist coverage afforded to each vehicle. Nationwide Ins. Co. v. Gode, supra; Safeco Ins. Co. v. Vetre, supra, 333-35; see also Pecker v. Aetna Casualty & Surety Co., supra, 447. “The reason for this is the common sense notion that such a result falls within the reasonable expectations of the parties to the insurance contract”; Cohn v. Aetna Ins. Co., supra; because an insured who “ ‘pay[s] a double premium [can reasonably] expect double coverage. . . .’ ” Yacobacci v. Allstate Ins. Co., 33 Conn. [433]*433Sup. 229, 231, 372 A.2d 987 (1976);8 see Nationwide Ins. Co. v. Gode, supra, 396. We have noted that “[t]his is particularly true when each of the insured vehicles is separately described, the coverage granted under the policy is separately listed for each vehicle, and a separate premium is charged for the coverage afforded to each of the described vehicles.” (Internal quotation marks omitted.) Cohn v. Aetna Ins. Co., supra, 530; Nationwide Ins. Co. v. Gode, supra, 395.
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Palmer, J.
This case requires us to decide whether General Statutes (Rev. to 1989) § 38-175C1 entitles an insured to aggregate the underinsured2 motorist coverage for two vehicles covered under one automobile liability insurance policy if the insured had paid an actuarially appropriate single premium for the underinsured motorist coverage and the policy language expressly excludes the aggregation of coverage. This issue was referred initially to an arbitration panel pursuant to the terms of the policy. A majority of that panel determined that, in the circumstances of this case, the underinsured motorist coverage on the two vehicles could not be aggregated, or “stacked.”3 The trial court subsequently granted the application of the plain[429]*429tiffs, Donald and Kristine Kent as administrators of the estate of Melissa F. Kent, to vacate the award of the arbitration panel. The defendant, Middlesex Mutual Assurance Company, appealed from the judgment of the trial court to the Appellate Court, and we transferred the appeal to this court pursuant to Practice Book § 4023 and General Statutes § 51-199 (c). We reverse the judgment of the trial court.
The parties stipulated to the following facts. The plaintiffs are the named insureds on an automobile liability policy issued by the defendant. On October 13, 1990, the decedent, an insured within the policy’s coverage for underinsured motorist benefits, was killed in an automobile accident caused by the negligence of an underinsured third party. The decedent’s estate recovered $20,000 from the liability insurer of the negligent driver, thereby exhausting the coverage limits of the tortfeasor’s policy. At the time of the accident, the plaintiffs were covered by an automobile insurance policy issued by the defendant on the plaintiffs’ two vehicles. Under that policy, the defendant agreed to pay all sums that the insureds would be legally entitled to recover as damages from the owner of an underinsured vehicle due to any injuries sustained by an insured as a result of an accident arising out of the use of the underinsured vehicle. The policy provided underinsured motorist limits in the amounts of $100,000 per person and $300,000 per accident. The defendant concedes that the damages resulting from the fatal injuries sustained by the decedent exceed $200,000.4 Throughout these proceedings, the plaintiffs have contended that the coverage of $100,000 per person is properly aggregated [430]*430for each of the two insured vehicles so that the defendant is obligated to provide underinsured motorist coverage of $200,000 per person. The defendant has argued, to the contrary, that stacking is not mandated because the insureds had paid a single, actuarially appropriate premium for underinsured motorist benefits in the amounts of $100,000 per person and $300,000 per accident. The defendant relies also on the language of the declarations page of the policy and the insurance application form, which specifies that the maximum benefit available is $100,000.
A majority of the arbitration panel determined that the defendant’s policy provided underinsured motorist coverage in the amount of $100,000 per person and concluded that the plaintiffs were not entitled to any additional payment. The plaintiffs subsequently filed an application to vacate the arbitration award. The trial court concluded that the arbitrators had improperly determined that the plaintiffs were not entitled to aggregate their underinsured motorist coverage for the purpose of determining the total available amount of such coverage, and therefore vacated the award. The defendant claims that the trial court improperly applied the principles of intrapolicy stacking to this case and seeks reinstatement of the arbitrators’ award. The gravamen of the defendant’s argument is that the plaintiffs, who received the benefit for which they had paid, could not reasonably have expected aggregated coverage.
We must consider again the applicability of intrapolicy stacking principles to specific facts and circumstances. See Cohn v. Aetna Ins. Co., 213 Conn. 525, 530, 569 A.2d 541 (1990); Dixon v. Empire Mutual Ins. Co., 189 Conn. 449, 453, 456 A.2d 335 (1983); Nationwide Ins. Co. v. Gode, 187 Conn. 386, 394-97, 446 A.2d [431]*4311059 (1982); Safeco Ins. Co. v. Vetre, 174 Conn. 329, 333-35, 387 A.2d 539 (1978). We have repeatedly held that General Statutes (Rev. to 1989) §§ 38-175a5 and 38-175c,6 [432]*432and § 38-175a-6 (a),7 now § 38a-334-6, of the Regulations of Connecticut State Agencies, which mandate that automobile liability insurance polices include underinsured motorist coverage, do not prohibit the stacking of underinsured motorist coverage for more than one passenger automobile. Covenant Ins. Co. v. Coon, 220 Conn. 30, 35, 594 A.2d 977 (1991); Cohn v. Aetna Ins. Co., supra, 529; Nicolletta v. Nationwide Ins. Co., 211 Conn. 640, 645-46, 560 A.2d 964 (1989); Allstate Ins. Co. v. Ferrante, 201 Conn. 478, 481-82, 518 A.2d 373 (1986); Dixon v. Empire Mutual Ins. Co., supra, 452-53; Nationwide Ins. Co. v. Gode, supra; Safeco Ins. Co. v. Vetre, supra, 332-33; see also Pecker v. Aetna Casualty & Surety Co., 171 Conn. 443, 448-53, 370 A.2d 1006 (1976). Indeed, we have found stacking to be available when the insured has paid separate premiums for the underinsured motorist coverage afforded to each vehicle. Nationwide Ins. Co. v. Gode, supra; Safeco Ins. Co. v. Vetre, supra, 333-35; see also Pecker v. Aetna Casualty & Surety Co., supra, 447. “The reason for this is the common sense notion that such a result falls within the reasonable expectations of the parties to the insurance contract”; Cohn v. Aetna Ins. Co., supra; because an insured who “ ‘pay[s] a double premium [can reasonably] expect double coverage. . . .’ ” Yacobacci v. Allstate Ins. Co., 33 Conn. [433]*433Sup. 229, 231, 372 A.2d 987 (1976);8 see Nationwide Ins. Co. v. Gode, supra, 396. We have noted that “[t]his is particularly true when each of the insured vehicles is separately described, the coverage granted under the policy is separately listed for each vehicle, and a separate premium is charged for the coverage afforded to each of the described vehicles.” (Internal quotation marks omitted.) Cohn v. Aetna Ins. Co., supra, 530; Nationwide Ins. Co. v. Gode, supra, 395. Moreover, once it has been established that an insurer is obligated to stack the underinsured motorist coverage in the policy, as it is when separate, additional premiums have been paid for coverage on two vehicles, the insurer may not reduce its liability for such aggregated coverage even through explicit policy language, except within the narrow context of the exceptions permitted under § 38-175a-6 (d) of the Regulations of Connecticut State Agencies.9 [434]*434Cohn v. Aetna Ins. Co., supra; Nicolletta v. Nationwide Ins. Co., supra; Allstate Ins. Co. v. Ferrante, supra, 483-84; Nationwide Ins. Co. v. Gode, supra, 397-400. In the present case, the defendant argues that it is not liable to pay the aggregate amount of the underinsured coverage and that the plaintiffs had no reasonable expectation that coverage would be aggregated because the policy provides that such stacking is not permitted and the insureds were charged and paid a single actuarially appropriate premium for underinsured motorist coverage on their own vehicles. For the following reasons, we agree with the defendant.
On the basis of the testimony at the arbitration hearing and a review of the policy documents and stipulated facts, a majority of the arbitrators found that the plaintiffs could not have had an objectively reasonable expectation of stacked coverage. With respect to the testimony, the plaintiffs10 professed no expectation of stacked coverage. Instead, they candidly admitted that they simply were seeking to “obtain good coverage” and “save a few dollars.” As the panel concluded, their testimony “provide[d] no basis for a finding of any expectation regarding stacking of [underinsured motorist] coverage.”
The policy documents also fail to support the claim that the parties reasonably expected stacked coverage, for, as the arbitrators found, the policy “unambiguously providefd] uninsured/underinsured motorist coverage of $100,000 per person and no more.”11 Specifically, [435]*435the named plaintiff signed the application for insurance immediately following the statement: “I understand and acknowledge that the limits of UNINSURED or UNDERINSURED MOTORIST COVERAGE are applicable ONCE per claim regardless of the number of vehicles or operators on the policy now or in the future.” In addition, the automobile policy issued by the defendant to the plaintiffs provided in part:
“LIMIT OF LIABILITY
The maximum limit of our liability for Uninsured Motorists Coverage in any one accident is the amount of Uninsured Motorists Coverage limits shown in the Declarations. This is the most we will pay regardless of the number of:
1. Covered persons
2. Claims made;
3. Vehicles involved in the accident; or
4. Covered autos.” (Emphasis in original.)
Moreover, the declarations page of the insurance policy specified the limits of coverages and premiums due. Although separate premiums are listed for each of the two vehicles insured by the policy for the bodily injury, property damage and basic reparations benefits coverages, the declarations expressly provide otherwise for underinsured motorist coverage:
“Uninsured/Underinsured Motorist
$100,000 per person
$300,000 per accident
Uninsured Premium $42.00
(One premium per policy, included in total policy premium)”12
[436]*436The plaintiffs admitted that they had not read these documents, which plainly describe the underinsured motorist premium and coverage.13
This does not conclude our analysis, however, because the policy language is not dispositive of the reasonable expectations of the parties to such a contract. Indeed, “we have held that . . . underinsured motorist coverage can be ‘stacked’ despite language in the relevant insurance policy that purports explicitly to prohibit ‘stacking’ of such coverage in the event that two automobiles are insured under the same policy.” Allstate Ins. Co. v. Ferrante, supra; Nicolletta v. Nationwide Ins. Co., supra, 646. In all of our cases upholding the right of the insured to stack underinsured motorist coverage, however, the policyholder had paid a separate, additional premium for the additional coverage. Covenant Ins. Co. v. Coon, supra; Cohn v. Aetna Ins. Co., supra, 530; Nicolletta v. Nationwide Ins. Co., supra, [437]*437645; Allstate Ins. Co. v. Ferrante, supra, 482; Dixon v. Empire Mutual Ins. Co., supra, 453; Nationwide Ins. Co. v. Gode, supra, 394-97; Safeco Ins. Co. v. Vetre, supra, 333; Pecker v. Aetna Casualty & Surety Co., supra, 447-53. In that circumstance, the insured was entitled to aggregate coverage because the parties reasonably expected such additional coverage. The same result is not compelled here, however, because the insureds paid a single actuarially appropriate premium for the underinsured motorist coverage.
The plaintiffs acknowledge that the right of an insured to aggregate underinsured motorist coverage is based upon the reasonable expectations of the parties. The plaintiffs maintain, however, that the payment of a separate, additional premium is not a prerequisite to a determination that stacking is available and that aggregation of coverage is mandated in this case. We agree, of course, that aggregated coverage may be available to an insured even in the absence of the payment of a double premium if stacking is the reasonable expectation of the parties. We do not agree, however, that a policyholder who insures two passenger vehicles under one policy but who pays a single premium for underinsured motorist coverage necessarily is entitled to aggregate coverage. The availability of stacking depends upon the reasonable expectations of the parties to the contract, a determination to be gleaned from the facts and circumstances of each case. In the present case, the arbitration panel considered the evidence and concluded that “there is nothing about the facts . . . which would justify an expectation of stacked coverage on the part of the [plaintiffs].”
Furthermore, as we noted previously, in this case not only did the policy specifically exclude stacking, but the premium was calculated accordingly. Thus, the plaintiffs’ claim of stacking in this case could only be justi[438]*438fied upon a conclusion that stacking is required as a matter of law whenever the policy covers more than one vehicle. We can find no justification for such a conclusion, either in the statutes or regulations regarding underinsured motorist coverage.
The plaintiffs concede, moreover, that there is no required stacking of third party liability coverage, of no fault basic reprations coverage, of collision coverage, or of comprehensive coverage, simply because the policy involved covers more than one vehicle. We can perceive no reason to hold, however, as the plaintiffs’ argument suggests, that stacking of underinsured motorist coverage is required as a matter of law despite the language of the policy and the lack of any reasonable expectation thereof.14
The trial court recognized that this case presents a stacking issue of first impression and relied upon what it characterized as this court’s “strong and unequivo[439]*439cal policy in favor of stacking” as reflected in our decisions upholding the right of insureds to aggregate coverage. See Covenant Ins. Co. v. Coon, supra; Cohn v. Aetna Ins. Co., supra; Nicolletta v. Nationwide Ins. Co., supra; Allstate Ins. Co. v. Ferrante, supra; Dixon v. Empire Mutual Ins. Co., supra; Nationwide Ins. Co. v. Gode, supra; Safeco Ins. Co. v. Vetre, supra; Pecker v. Aetna Casualty & Surety Co., supra. As we have discussed, however, those cases hold only that an insurer may not avoid liability for stacking, even though language in the policy purports to do so, if the insured has paid a separate, additional premium for underinsured motorist coverage. To permit an insurer so to limit its liability under such circumstances would deprive the insured of a benefit for which the policyholder has paid, a result not consistent with the reasonable expectations of the parties. Those are not the circumstances here. Because there was substantial evidence to support the arbitrators’ determination that the plaintiffs could not have had a reasonable expectation of stacked coverage; Chmielewski v. Aetna Casualty & Surety Co., 218 Conn. 646, 660-61 n.15, 591 A.2d 101 (1991); the trial court improperly granted the plaintiffs’ application to vacate the arbitration award.15
Accordingly, we conclude that General Statutes (Rev. to 1989) § 38-175c does not require that an insurer aggregate the underinsured motorist coverage provided in a policy covering two passenger vehicles if the [440]*440insured has paid a single actuarially appropriate premium for the underinsured motorist coverage and the policy expressly excludes stacked coverage.
The judgment is reversed and the case is remanded with direction to render judgment denying the application to vacate the arbitration award.
In this opinion Borden, Norcott and Katz, Js., concurred.