
588 N.W.2d 153 (1998)
231 Mich. App. 699
CHAMPION'S AUTO FERRY, INC., Appellant,
v.
MICHIGAN PUBLIC SERVICE COMMISSION and Township of Clay, Appellees.
Docket No. 201174.
Court of Appeals of Michigan.
Submitted September 8, 1998, at Lansing.
Decided October 2, 1998, at 9:00 a.m.
Released for Publication December 18, 1998.
*156 Haliw, Siciliano and Mychalowych (by Andrew J. Haliw, III, Joseph A. Siciliano, and Nanette L. Korpi), Farmington Hills, for Champion's Auto Ferry, Inc.
Frank J. Kelley, Attorney General, Thomas L. Casey, Solicitor General, and Don L. Keskey and David M. Gadaleto, for Public Service Commission.
*157 McIntosh, McColl, Carson, McNamee, Strickler & Rickler (by John B. McNamee), Fort Gratiot, for Clay Township.
Before JANSEN, P.J., and NEFF and O'CONNELL, JJ. *154
*155 PER CURIAM.
Appellant Champion's Auto Ferry, Inc., (CAF) appeals as of right, M.C.L. § 462.26(1); MSA 22.45(1), from a January 15, 1997, opinion and order of the Public Service Commission (PSC) in Case No. T-1289, a decision made by the PSC under the water carrier act, M.C.L. § 460.201 et seq.; MSA 22.91 et seq. Initially, the claim of appeal also encompassed the PSC's contemporaneous ruling in Case No. T-1288, but that case has been settled, and that aspect of the appeal has been dismissed by stipulation of the parties effectuated by this Court's unpublished order of May 9, 1997. We affirm.
CAF operates boats that transport passengers, freight, and vehicles between the city of Algonac and Harsens Island. Algonac is located in St. Clair County, in Clay Township, and is bordered on the east and south by the St. Clair River, the middle of which constitutes the boundary between the United States and Canada. At the southerly portion of the city of Algonac, the river is divided into two channels by virtue of the existence of Harsens Island. The international border continues down the center of the south channel, which flows east and south of Harsens Island, while the north channel, which runs between Harsens Island and a portion of the St. Clair County mainland, is wholly within the United States. Both termini between which CAF boats operate are within the north channel of the St. Clair River. The length of the trip is approximately one-half mile.
At the outset, it should be noted that CAF contends, notwithstanding its voluntary adoption of nomenclature suggesting that it is a "ferry" service, that it is a "water carrier" and that it does not operate a "ferry service." The map reflects that CAF's dock in Algonac abuts state highway M-29; its Harsens Island dock abuts state highway M-154. In a strictly technical sense, a "ferry" is a continuation of the highway from one side of the water over which it passes to the other and is for transportation of passengers or travelers with their vehicles and such property as they may carry or have with them. St. Clair Co. v. Interstate Sand & Car Transfer Co., 192 U.S. 454, 466, 24 S.Ct. 300, 48 L.Ed. 518 (1904). CAF's operation certainly seems to fit this definition, but the statute simply subjects to regulation by the PSC "any and all persons, firms and corporations engaged in the transportation of freight, passengers, or express, by water, wholly within this state." MCL 460.201; MSA 22.91. The statute thus elides any distinction between "ferries" and other forms of water transportation for regulatory purposes. Accordingly, the remainder of this opinion will refer to the service operated by CAF as a "ferry," although with no intent to prejudge any of the substantive issues raised.
CAF has operated this service since 1937. For the more than one thousand permanent residents of Harsens Island, as well as numerous cottage owners and other visitors, CAF's ferry service is the main link between Harsens Island and the mainland. There are no bridges or competing commercial ferries.
As this Court recited in a December 20, 1996, unpublished opinion addressing a PSC rate order governing CAF's operations, Champion's Auto Ferry, Inc v. Public Service Comm, unpublished opinion per curiam of the Court of Appeals, issued December 20, 1996 (Docket Nos. 185048, 187124), from at least 1966 onward, CAF voluntarily submitted its operations to regulation by the PSC. In 1992, however, after David C. Bryson, whose grandfather founded CAF, acquired sole ownership of the stock of the company, creating debt on the books of the company by way of payment for the interests purchased, and without expending his own funds, immediately began a campaign to raise rates for the service provided. Several rate increases were allowed by the PSC, but others were rejected. When CAF appealed the PSC's rejection of rate increase requests in the prior appeal, this Court affirmed, finding that the rates established were reasonable rather than confiscatory, that the PSC *158 had properly viewed CAF's operations with respect to their economic effect over a calendar year, rather than adjusting the rates on a seasonal basis, and further held that the PSC had not improperly interfered with management decisions in refusing to recognize the acquisition debt that Bryson had engendered, or a twenty-four percent salary increase Bryson gave himself, in setting rates and charges. Id.
Shortly after that decision, on January 6, 1997, CAF announced in a letter to the PSC's Director of Motor Carrier Regulation that, because of its inability to obtain what it deemed reasonable rate relief, it planned to suspend operations in stages. CAF announced its intent, beginning January 15, 1997, at 6:00 a.m., to discontinue the sale of twenty-trip commuter discount ticket books. It proposed to suspend, commencing February 3,1997, night ferry service between 10:00 p.m. and 6:00 a.m., then afternoon ferry service starting February 10, 1997, except for one afternoon trip to provide service for the school bus, and then on February 16, 1997, at 2:00 p.m., to terminate all ferry service between Algonac and Harsens Island.
That announcement, however, was rendered nugatory by the PSC's decision in the present case, T-1289, because by that decision CAF is required to give twelve months' notice of its intent to discontinue all or any part of its operations. Moreover, the PSC's decision requires CAF to provide service on a continuous basis from 6:00 a.m. to 8:30 a.m. and 4:30 to 6:30 p.m., quarter hourly service from 8:30 a.m. to 4:30 p.m. and 6:30 p.m. to 12:00 a.m., and not less than twice hourly service from 12:00 a.m. to 6:00 a.m. during winter hours, and continuous service from 6:00 a.m. to 12:00 a.m., and not less than thrice hourly service from 12:00 a.m. to 6:00 a.m. during summer hours, except where, through no fault of its own, CAF is unable to meet that schedule. The order further requires that, to meet those service requirements, CAF maintain a fleet of at least three boats exclusively devoted to the Algonac-Harsens Island run. The PSC's order further mandates that CAF refund excess charges illegally collected, in violation of its then-existing PSC tariffs, by discounting various charges until an amount equal to the overcharge is expended by undercharges. This method involves slight adjustments to the tariffs and reflects the PSC's ancillary renunciation of any intent to seek criminal prosecution under M.C.L. § 460.206; MSA 22.96.
The overcharges resulted when, in 1995, CAF petitioned the Interstate Commerce Commission (ICC), which was subsequently abolished pursuant to the ICC Termination Act of 1995, PL 104-88, 109 Stat 803, for a certificate to operate interstate water-carrier service between Algonac and Harsens Island. Such a certificate was granted by the ICC. However, on subsequent petition by the PSC, Clay Township, and a Harsens Island homeowners' association, the ICC vacated the tariff previously approved and held that it was without jurisdiction to regulate CAF's service, which to the ICC appeared to be involved exclusively in intrastate commerce, and also that it independently lacked jurisdiction because CAF was operating a ferry service, which was outside the jurisdiction, as a general proposition, of the ICC. Viking Starship, Inc, & Common Carrier Application, 4 ICC2d 634, 636 (1988), aff'd. Cross-Sound Ferry Services, Inc. v. ICC, 290 U.S. App. D.C. 39, 934 F.2d 327 (1991); Champion's Auto Ferry, Inc (ICC No. WC 1548, decision of December 27, 1995). Subsequently, the Surface Transportation Board (STB) vacated any license that CAF had acquired from the ICC and discontinued CAF's effort to acquire such federal authority, ruling that the ICC Termination Act had abolished any federal regulatory function applicable to CAF. The STB noted that, in issuing a license and approving CAF's proposed tariffs,
[t]he ICC did not make a determination that CAF was actually performing interstate operations. If, as Michigan contends, CAF is not carrying traffic as a common carrier in interstate commerce, then CAF would not be protected by an interstate license, even if such a license were effective. Thus, ... even if the license were still in force, and the prior regulatory regime were still in place, any of CAF's activities that did not constitute transportation in interstate commerce would be outside the scope of the license *159 and hence not protected by it. [Champion's Auto Ferry, Inc (STB No. WC 1548 [sub-No. 1C], decision issued February 22, 1996).]
It is on the basis of those federal administrative rulings that the PSC in this case concluded that, during the brief time frame when CAF was imposing charges pursuant to the now vacated federal tariffs, which were higher than the PSC-approved tariffs, CAF was illegally overcharging for its services and thus must provide refunds.
CAF presents eleven issues for our determination. All the issues were duly argued before both the administrative hearing officer and the PSC. The standard of review requires that a party aggrieved by a decision of the PSC show by clear and satisfactory evidence that the PSC's decision is unlawful or unreasonable. MCL 460.205; MSA 22.95, M.C.L. § 462.26(8); MSA 22.45(8). A decision is unlawful when it involves an erroneous interpretation or application of the law. Attorney General v. Public Service Comm., 215 Mich.App. 356, 364, 546 N.W.2d 266 (1996). A decision is unreasonable when it is unsupported by the evidence. Id. The courts must give due deference to the PSC's administrative expertise and legislative discretion, and may not substitute their judgment for that of the PSC; similarly, the courts should give great weight to any reasonable construction of a regulatory scheme that the PSC is empowered to administer. Id.

I. WHETHER THE PSC ACTED UNLAWFULLY AND UNREASONABLY IN DENYING CAF'S MOTION TO DISQUALIFY THE COMMISSIONERS OF THE PSC OR IN THE ALTERNATIVE TO STAY THE PROCEEDINGS?
The PSC appeared as a party adverse to CAF in proceedings before the ICC, the STB, the circuit court, and the federal court. CAF contends that the positions asserted by the PSC in those administrative and judicial proceedings reflected a prejudgment of issues the PSC was called on to adjudicate in the present case, particularly issues of jurisdiction.
As indicated, evidentiary hearings in this case and initial findings of fact and conclusions of law were conducted or made by an independent hearing officer, not by the PSC, which simply was called upon to review the hearing officer's proposal for decision, M.C.L. § 24.281; MSA 3.560(181), which it ultimately adopted. There is no intolerable risk of actual bias by a decisionmaker where no claim is made that the particular hearing officer who presided had taken any position, public or private, on any of the issues presented, and the mere fact that the hearing officer may have been employed by the PSC, and that the PSC itself had institutionally taken such a position in federal administrative proceedings or state or federal litigation, does not reflect any situation violative of due process. Tomlin v. Dep't of Social Services, 154 Mich.App. 675, 398 N.W.2d 490 (1986).
Nor is any claim made that any member of the PSC had some kind of personal interest in any part of this controversy, such that a determination one way or the other would be of economic benefit to a member of the PSC or otherwise individually affect a member of the PSC in a cognizable manner different than the public generally. Cf. Tumey v. Ohio, 273 U.S. 510, 522-523, 47 S.Ct. 437, 71 L.Ed. 749 (1927). A member of a state agency is generally not disqualified as a decisionmaker merely because that member has taken a public position on an issue, absent a showing of incapability of judging that particular issue fairly. Where, as here, institutional involvement of the PSC in federal administrative or state or federal litigation concerning related issues had terminated some months before the PSC was called on to adjudicate Case No. T-1289, there is no basis for concluding that the members of the PSC were so immediately and personally "enmeshed" in any one of those issues as to preclude them from rendering an impartial administrative decision. Livonia v. Dep't of Social Services, 423 Mich. 466, 510, 378 N.W.2d 402 (1985), citing Johnson v. Mississippi, 403 U.S. 212, 91 S.Ct. 1778, 29 L.Ed.2d 423 (1971). The Supreme Court in Livonia went on to hold that an administrative adjudicator's mere familiarity with the facts of a case obtained during the performance of a *160 statutory duty does not disqualify the decisionmaker.
Assuming, however, that such involvement of the PSC, as an institution notwithstanding that none of its members was named or appeared individually in those administrative or judicial proceedingsis nonetheless sufficient to disqualify all the members of the PSC, then the rule of necessity comes into play. Aside from questions of the PSC's jurisdiction, which will be addressed later in this opinion, assuming proper jurisdiction, that jurisdiction is generally exclusive; no other agency, and no court, has been delegated by the Legislature the power delegated to the PSC to regulate water carriers. Accordingly, if the PSC's involvement in prior federal administrative and federal and state judicial proceedings requires recusal of all its individual members, or enough of them so as to prevent a quorum from assembling, the rule of necessity precludes recusing the members of the PSC if disqualification would then leave the PSC unable to adjudicate questions otherwise properly presented for its resolution. United States v. Will, 449 U.S. 200, 213, 101 S.Ct. 471, 66 L.Ed.2d 392 (1980); Bliss v. Caille Bros. Co., 149 Mich. 601, 113 N.W. 317 (1907).
Here, because the PSC simply adopted the factfindings and legal conclusions of the independent hearing officer, who is not alleged to be disqualified for any reason, this Court need not even contemplate whether, to the extent its review is deferential rather than de novo, some form of heightened appellate scrutiny might be warranted. Unless the hearing officer's decision is substantively erroneous, the possible disqualification of the PSC becomes irrelevant. People v. Gorka, 381 Mich. 515, 520, n. 2, 164 N.W.2d 30 (1969).

II. WHETHER THE PSC ACTED UNLAWFULLY AND UNREASONABLY IN RULING THAT CLAY TOWNSHIP HAD STANDING TO BRING ITS COMPLAINT?
CAF next argues that, pursuant to M.C.L. § 460.204; MSA 22.94, only the PSC may institute a formal complaint.
MCL 460.204; MSA 22.94 provides in relevant part:
Whenever any complaint shall be made to said Michigan public utilities commission by any person, firm, or corporation against any rate, fare, charge, or tariff of any carrier by water within this state, or against any rule, regulation, or service of such carrier, or against the neglect, failure, or refusal of any such carrier to make, observe or perform any rate, fare, charge, or tariff, or any rule, regulation, or service, said Michigan public utilities commission shall investigate the same, and it may regulate the performance or observance of any rate, fare, charge, or tariff, and any rule, regulation, or service, and may prescribe the same to be observed by such carrier: Provided, that such carrier shall in all cases be entitled to reasonable notice and an opportunity to be heard on such investigation before any rate, fare, charge, or tariff, or any rule, regulation, or service shall be prescribed, established, or imposed by said commission....
By its terms, the statute allows any juridical entity, such as the township, to file a complaint with the PSC (as successor to the Public Utilities Commission), and it thereupon becomes the duty of the PSC to investigate. The statute does not prescribe how such investigation shall be conducted. Given this statutory phraseology, CAF's argument is without merit.
Indeed, under a statute couched in nearly identical terms, the Supreme Court rejected such an argument as overly technical and further ruled that from the mere fact that an administrative agency proceeded to address the substantive merits of any such complaint, it could simply be presumed that the agency had conducted the prerequisite investigation. Thus, absent some legal error or procedural impropriety prejudicially affecting the substantial rights of a party, any derelictions with respect to preliminary investigation would not provide a basis for appellate relief. Bd. of State Tax Comm'rs v. Kohler, 193 Mich. 420, 425-428, 159 N.W. 785 (1916).


*161 III. WHETHER THE PSC ACTED UNLAWFULLY AND UNREASONABLY IN FINDING THAT CAF'S OPERATIONS BETWEEN ALGONAC AND HARSENS ISLAND INVOLVES INTRASTATE AND NOT INTERSTATE COMMERCE AND THAT CAF'S OPERATIONS DO NOT FALL WITHIN THE JURISDICTION OF THE SURFACE TRANSPORTATION BOARD?
CAF contends that the operative fact is not that both Algonac and Harsens Island are located in Michigan, but that CAF operates a route over the St. Clair River, which forms part of the international boundary between the United States and Canada. CAF reasons that pursuant to U.S. Const, art I, § 8, cl 3, Congress has exclusive control over transportation and shipping affecting international commerce.
In the case of ferries operating over boundary waters, it has always been recognized that transportation between two points in one state, in the absence of federal regulation, is subject to state regulation. Wilmington Transportation Co. v. Railroad Comm. of California, 236 U.S. 151, 35 S.Ct. 276, 59 L.Ed. 508 (1915).
At the outset, however, it should be recognized that it is irrelevant whether the service provided by CAF involves interstate or intrastate commerce, inasmuch as CAF, by virtue of the rulings of the ICC and the STB, is collaterally estopped from contending that Congress has legislated federal regulation of CAF's operations. Collateral estoppel applies to unappealed administrative determinations that are adjudicatory in nature and where, as with respect to the ICC and the STB, a method of appeal is provided. Senior Accountants, Analysts & Appraisers Ass'n v. Detroit, 399 Mich. 449, 457-458, 249 N.W.2d 121 (1976). Accordingly, given the ruling of both federal agencies that, following abolition of the ICC by the ICC Termination Act of 1995, state regulation of CAF's services, including its tariffs, would be permissible, even if transportation was occurring between points in two different states. Port Richmond & Bergen Point Ferry Co. v. Bd. of Chosen Freeholders of the Co. of Hudson, 234 U.S. 317, 34 S.Ct. 821, 58 L.Ed. 1330 (1914).
However, it is unnecessary to rely on the federal administrative determinations, because any commerce here involved is from one point in the state of Michigan to another, across a portion of the St. Clair River entirely within the boundaries of the United States, and by a route that does not enter the territorial waters of any neighboring state or foreign country. Accordingly, the commerce here involved is truly intrastate and outside the ambit of federal regulation as interstate commerce. Furthermore, because CAF is operating a ferry, irrespective of any involvement in interstate commerce, a ferry may be regulated in respect of the landing places. St. Clair Co., supra, at 460, 24 S.Ct. 300.
Because CAF's route does not actually cross either a state boundary or an international boundary, it does not involve interstate commerce. Cf. Central Greyhound Lines, Inc. v. Mealey, 334 U.S. 653, 68 S.Ct. 1260, 92 L.Ed. 1633 (1948) (state tax held to infringe interstate commerce where applied to portions of a bus route that, although beginning and ending in the same state, included substantial travel in other states). The right to establish and regulate ferries is part of that mass of legislation that embraces everything within the territory of a state not surrendered to the federal government. Conway v. Taylor, 1 Black 603, 66 U.S. 603, 17 L.Ed. 191 (1861). Accordingly, the PSC did not err in finding that regulation of CAF's Algonac-Harsens Island service is within its jurisdiction and is not preempted either by existing federal interstate commerce regulations or by the "dormant" Commerce Clause, U.S. Const, art I, § 8, cl 3.

IV. WHETHER THE PSC ACTED UNLAWFULLY AND UNREASONABLY IN FINDING THAT ITS POWER TO REGULATE CAF IS NOT PREEMPTED BY FEDERAL LAW, AND IN FURTHER DETERMINING THAT THE PSC IS AUTHORIZED TO REGULATE CAF'S RATES, FARES AND CHARGES PURSUANT TO THE WATER CARRIER ACT?
CAF asserts that PSC regulation of its service infringes the purpose and objective *162 of Congress as reflected in the ICC Termination Act. CAF contends that, by abolishing the ICC, Congress intended that carriers engaged in interstate commerce not be subject to restrictions regarding the fares they can charge.
Granting arguendo that, in repealing the Interstate Commerce Commission Act and abolishing the ICC, Congress intended that carriers engaged in interstate commerce not be subject to regulation, leaving such matters to the marketplace, CAF is not engaged in interstate commerce, as already established, and therefore this issue is without merit.

V. WHETHER THE PSC ACTED UNLAWFULLY AND UNREASONABLY IN RULING THAT THE CAF SHOULD PROVIDE A LEVEL OF SERVICE AS RECOMMENDED BY CLAY TOWNSHIP AND AS MODIFIED BY THE PSC STAFF?
CAF argues that the PSC does not have the authority to actively manage a regulated enterprise. CAF contends that the PSC exceeded its statutory authority by defining CAF's hours of service, the frequency of operation, and otherwise micromanaging CAF's business.
By its terms, the controlling statute empowers the PSC to regulate service, M.C.L. § 460.204; MSA 22.94, and this power is buttressed or augmented by § 22 of the Railroad Act, M.C.L. § 460.22(a); MSA 22.41(a), which similarly grants to the Railroad Commission complete power to regulate any practice of any person, firm, corporation, or association affecting the transportation of persons or property or any service in connection therewith. The PSC acquired all the powers of the Railroad Commission by virtue of M.C.L. § 460.53; MSA 22.3. This Court has held that § 22 of the Railroad Act broadly empowers the PSC to regulate rates and services of entities subject to its jurisdiction. Chesapeake & Ohio R. Co. v. Public Service Comm., 59 Mich.App. 88, 94-97, 228 N.W.2d 843 (1975).

VI. WHETHER THE PSC ACTED UNLAWFULLY AND UNREASONABLY IN CONCLUDING THAT THE PSC MAY REQUIRE CAF TO PROVIDE A TWELVE-MONTH ADVANCE NOTICE OF ANY INTENTION TO CEASE SERVICE?

VII. WHETHER THE ACTIONS OF THE PSC REQUIRING CAF TO REMAIN IN OPERATION FOR TWELVE MONTHS AFTER DECIDING TO CEASE OPERATIONS WOULD VIOLATE THE THIRTEENTH AMENDMENT OF THE UNITED STATES CONSTITUTION?

VIII. WHETHER THE ACTIONS OF THE PSC REQUIRING CAF TO PROVIDE A TWELVE-MONTH NOTICE BEFORE TERMINATING SERVICE VIOLATES THE FIFTH AMENDMENT OF THE UNITED STATES CONSTITUTION?
It will be noted that CAF is a corporation. The simple answer to the first subquestion propounded, therefore, is that the Thirteenth Amendment does not apply to corporations, but only to individuals. This has been the law since the decision in Slaughter-House Cases, 16 Wall. 36, 83 U.S. 36, 69, 21 L.Ed. 394 (1872) the first high court case construing the Thirteenth Amendment, where the Supreme Court said:
That personal servitude was meant, is proved by the use of the word `involuntary,' which can only apply to human beings.
Thus, Dawson v. Jones, 512 So.2d 311 (Fla.App., 1987), on which CAF relies, is distinguishable, because there the mandatory injunction at issue was directed at a person, not a corporation.
With respect to the general principle that the PSC may regulate, but not manage, enterprises subject to its jurisdiction, requiring a regulated enterprise to provide a type or level of service does not involve management of the business, because the manner of providing the level of service is left to the corporation's officers and shareholders.
*163 With respect to requiring twelve-month notice before terminating operations, there are two intertwined questions presented. First, there must be some statutory authority by which the PSC is empowered to require a regulated entity to continue operations; absent such authority, such enterprises are free to choose to discontinue operations in whole or in part. Lucking v. Detroit & Cleveland Navigation Co., 265 U.S. 346, 44 S.Ct. 504, 68 L.Ed. 1047 (1924). Because the water carrier act, M.C.L. § 460.204; MSA 22.94, gives the PSC plenary power to regulate service, and by necessary implication the power to regulate both commencement and termination of service, the PSC did not exceed its jurisdiction in requiring continuation of service until a twelve-month notice is provided. Even if the statute were ambiguous, the PSC's construction would be entitled to deference where not clearly at odds with the legislative intent. Attorney General, supra at 364, 546 N.W.2d 266.
The secondary question then becomes whether if, as CAF claims, its operations are unprofitable, a mandate that it continue operations violates the Fifth Amendment. More correctly, the argument should be that such regulation violates the Fourteenth Amendment, which applies to the states, whereas the Fifth Amendment applies to the federal government, although the Fourteenth Amendment unquestionably incorporates the Fifth Amendment prohibition against taking property without just compensation for public use. Dolan v. Tigard, 512 U.S. 374, 383, 114 S.Ct. 2309, 129 L.Ed.2d 304 (1994).
However, CAF has failed to establish that any such taking has occurred. When this Court considered the rates and tariffs authorized by the PSC in the prior unpublished opinion, it expressly found that CAF could operate both profitably and with a reasonable rate of return within that scheme of charges. CAF has expressly disavowed any subsequent effort to seek, by petition to the PSC, modification of those tariffs, so, on the basis of the preclusive principle of res judicata, this Court's prior unpublished determination, although not precedential, MCR 7.215(C)(1), requires a conclusion that no confiscation has occurred as a matter of law. W. H. Atkinson Co. v. State Bd. of Tax Administration, 299 Mich. 315, 300 N.W. 102 (1941).
If and when CAF can establish that its authorized rates are in fact confiscatory, it may sue in the Court of Claims for just compensation on a theory of constitutional tort. Smith v. Dep't of Public Health, 428 Mich. 540, 544, 410 N.W.2d 749 (1987), aff'd. on other grounds sub nom Will v. Michigan Dep't of State Police, 491 U.S. 58, 109 S.Ct. 2304, 105 L.Ed.2d 45 (1989); Marlin v. Detroit, 205 Mich.App. 335, 338, 517 N.W.2d 305 (1994). The existence of such a remedy precludes a finding in this administrative review proceeding that the requirement of continuation of service for a minimum twelve-month time frame is itself unconstitutional. Regional Rail Reorganization Act Cases, 419 U.S. 102, 126-127, 95 S.Ct. 335, 42 L.Ed.2d 320 (1974). The existence of such a judicial remedy for an otherwise uncompensated taking is as comprehensive as the constitution requires and avoids any necessity of declaring that a continuation of service requirement, should CAF be unable to operate profitably, constitutes an uncompensated taking. Id.

IX. WHETHER THE PSC ACTED UNLAWFULLY AND UNREASONABLY IN CONCLUDING THAT THE TOWNSHIP'S COMPLAINT WAS RIPE FOR REVIEW BY THE PSC?
CAF suggests that there is no present controversy between the parties because CAF is continuing its operations between Algonac and Harsens Island.
This argument rather disingenuously ignores the fact that the present state of affairs arises by virtue of the PSC's order requiring continuation of service, without which, so far as appears, CAF would have implemented its announced plan to terminate all operations by February 16, 1997. When the township initially filed its complaint, CAF had announced, by letter of April 6, 1996, its intention to discontinue its ferry service. CAF has been continuing that service only under protest of the circuit court restraining orders and eventually the decision of the PSC. The decision from which the appeal has *164 been claimed came only approximately one week after CAF announced its intent to completely discontinue service (its April 6, 1996, declaration was conditional). Accordingly, the issue was ripe for determination.

X. WHETHER THE PSC'S DECISION IN THIS CASE VIOLATES EQUAL PROTECTION PRINCIPLES?

XI. WHETHER THE PSC'S DECISION DEPRIVES CAF OF A PROTECTED PROPERTY RIGHT WITHOUT DUE PROCESS IN VIOLATION OF THE FEDERAL AND STATE CONSTITUTIONS?
These issues were previously raised by CAF and rejected in this Court's prior unpublished opinion. As already noted, while that decision is not precedential, it is res judicata with respect to CAF. W. H. Atkinson Co. v. Brown, supra. However, because this opinion is published and precedential, MCR 7.215(C)(2), we repeat here what we said previously on these points:
Next, Champion argues that the actions of the PSC in regulating it violated Champion's right to equal protection. Champion contends that it is the only water carrier subject to regulation by the PSC even though other ferries operate in Michigan. Therefore, Champion argues that the PSC's scrutiny of its rates and regulations and lack of scrutiny of other ferries violates equal protection.
The Equal Protection Clause of the Fourteenth Amendment directs that all persons similarly situated shall be treated alike. El Souri v. Dep't of Social Services, 429 Mich. 203, 207, 414 N.W.2d 679 (1987). However, the Equal Protection Clause does not require things which are different in fact or opinion to be treated in law as though they were the same. Id. Generally, legislation challenged on equal protection grounds is accorded a presumption of constitutionality and is reviewed applying a rational basis standard. Doe v. Dep't of Social Services, 439 Mich. 650, 662, 487 N.W.2d 166 (1992). Under the rational basis standard, a statute will not be struck down if the classification scheme is rationally related to a legitimate governmental purpose.
Champion has not shown that the PSC's regulation and scrutiny of its rates violates its right to equal protection. The PSC has a rational basis for regulating Champion's rates and [services] because other carriers are subject to competition (unlike Champion) and most ferry services in the state are either publicly owned or under the jurisdiction of another government. Thus, there is no violation of equal protection.
Champion next argues that the failure of the Carriers by Water Act to set forth standards for the PSC's regulation of rates charged is unconstitutional as violative of due process.
The Carriers by Water Act satisfies due process because the PSC is required to give notice to the water carrier and other interested persons of the hearing which must be held when the PSC suspends the operation of a tariff and inquires into rates and regulations. MCL 460.201; MSA 22.91. Cummings v. Wayne Co., 210 Mich.App. 249, 253, 533 N.W.2d 13 (1995) (due process in civil cases generally requires notice of the nature of the proceedings, an opportunity to be heard in a meaningful time and manner, and an impartial decisionmaker).
Further, due process requires that the delegation of legislative tasks to an administrative agency be accompanied by the existence of standards as reasonably precise as the subject matter requires or permits. Kopietz v. Clarkston Zoning Bd. of Appeals, 211 Mich.App. 666, 670-671, 535 N.W.2d 910 (1995). In Attorney General v. MPSC, 161 Mich.App. 506, 411 N.W.2d 469 (1987), the Attorney General contended that a statute allowing the PSC to incorporate a gas cost recovery clause was unconstitutional because the statute provided no standard to guide the PSC in the exercise of its discretion regarding when a gas cost recovery clause should be approved. This Court disagreed, ruling that the gas cost recovery statute as a whole met the requirement that it provide standards as reasonably precise as the subject *165 matter required or permitted. See id., pp. 510-111, 411 N.W.2d 469.
Likewise, reading the Carriers by Water Act as a whole, it meets the requirement that it provide standards as reasonably precise as the subject matter requires or permits. Section one of the act requires that there be a hearing and that notice must be given to the carrier and to other interested persons. Section four of the act also requires that the carrier shall be entitled to reasonable notice and an opportunity to be heard before any tariff shall be imposed. An order imposed by the PSC is entitled to judicial review under § 5 [MCL 460.205; MSA 22.95], and § 2 [MCL 460.202; MSA 22.92] limits examination by the PSC to books, accounts, records, and papers. Further, the PSC has a long history of rate regulation of water carriers, motor carriers, and utilities. Accordingly, the Carriers by Water Act provides standards as reasonably precise as the subject matter requires or permits.
Therefore, there is no due process violation in this case.
Affirmed.
