JUSTICE STEWART
delivered the opinion of the court:
This is an interlocutory appeal pursuant to Illinois Supreme Court Rule 308 (155 Ill. 2d R. 308). The defendant, Bi-State Development Agency of the Illinois-Missouri Metropolitan District, doing business as Metro or Bi-State, also known as Bi-State Development Agency (Bi-State), filed a motion to dismiss the complaint filed by the plaintiff, Brian T. Hubble. The circuit court denied Bi-State’s motion to dismiss and then certified the following question of law for our review: “Whether Bi-State Development Agency is a local public entity as defined by the Local Governmental and Governmental Employees Tort Immunity Act, 745 ILCS 10/8 — 101, and is therefore subject to the one-year statute of limitations set forth in the Act.” For the reasons that follow, we answer the certified question in the negative.
BACKGROUND
The St. Louis metropolitan area encompasses counties on both the Illinois side and the Missouri side of the Mississippi River, and Illinois and Missouri share a common interest in the development of mass transportation in this area. In 1949, the two states entered into an interstate compact agreement to establish an agency responsible for operating public mass transportation facilities in the city of St. Louis and in three Missouri counties and three Illinois counties along the Illinois/Missouri border near St. Louis. The compact identified this area as the “Bi-State Metropolitan Development District” (the District). 45 ILCS 100/1 (West 2006); Mo. Ann. Stat. §70.370 (West 2004). The defendant, Bi-State, is the agency established pursuant to the compact. “Bi-State’s entrance into the public transportation business in the St. Louis metropolitan district was necessitated by the deteriorating condition of mass transportation similarly experienced by major urban areas throughout the country.” Ladue Local Lines, Inc. v. Bi-State Development Agency of the Missouri-Illinois Metropolitan District, 433 F.2d 131, 136 (8th Cir. 1970). One of the services Bi-State provides is public bus transportation throughout the District.
Helen Wilson was a bus driver for Bi-State, and on September 13, 2005, while driving a Bi-State bus, she collided with a vehicle driven by the plaintiff, Brian T. Hubble. On March 1, 2007, Hubble filed a lawsuit against Bi-State, alleging that Wilson’s negligence caused the vehicle accident and that Bi-State was vicariously liable for Wilson’s negligence. Bi-State filed a motion to dismiss Hubble’s complaint pursuant to section 2 — 619(a)(5) of the Illinois Code of Civil Procedure (735 ILCS 5/2 — 619(a)(5) (West 2006)), on the grounds that Hubble had filed his complaint outside the time limit under the applicable statute of limitations. The circuit court conducted an evidentiary hearing on Bi-State’s motion to dismiss, and on July 26, 2007, the court denied the motion. Bi-State requested the circuit court to make the findings necessary for an immediate interlocutory appeal pursuant to Illinois Supreme Court Rule 308 (155 Ill. 2d R. 308). The circuit court initially denied Bi-State’s request to file an interlocutory appeal, but on October 26, 2007, the Illinois Supreme Court entered a supervisory order that directed the circuit court to grant Bi-State’s motion for an interlocutory appeal and to stay the proceedings pending the outcome of the appeal. The circuit court, therefore, certified the question concerning the proper statute of limitations for immediate interlocutory appeal. On November 28, 2007, Bi-State filed a petition for leave to appeal, and we granted Bi-State’s petition.
Illinois has a two-year general statute of limitations for personal injury actions. 735 ILCS 5/13 — 204 (West 2006). The Local Governmental and Governmental Employees Tort Immunity Act (the Tort Immunity Act) (745 ILCS 10/1 — 101 et seq. (West 2006)), however, contains a one-year statute of limitations for personal injury claims against local public entities. 745 ILCS 10/8 — 101(a) (West 2006). Hubble timely filed his complaint against Bi-State if the two-year general statute of limitations applies to his personal injury claim, but he did not file his complaint in time if the one-year statute of limitations in the Tort Immunity Act applies. Bi-State’s interlocutory appeal requires us to determine whether the statute of limitations contained within the Tort Immunity Act applies to Hubble’s claim, and the resolution of that issue requires us to determine whether the legislature intended to include interstate compact agencies such as Bi-State within the definition of a “local public entity” in the Tort Immunity Act (745 ILCS 10/1 — 206 (West 2006)).
We hold that the legislature did not intend to include interstate compact agencies within the Tort Immunity Act’s definition of a “local public entity.” Accordingly, the one-year statute of limitations contained within the Tort Immunity Act (745 ILCS 10/8 — 101 (West 2006)) does not apply to Hubble’s claim.
DISCUSSION
The question of whether Bi-State is a “local public entity” under the Tort Immunity Act presents an issue of statutory construction that is guided by well-established legal principles. Statutory construction issues involve questions of law that are reviewed de novo. In re Estate of Andernovics, 197 Ill. 2d 500, 507, 759 N.E.2d 501, 505 (2001). The primary objective of statutory construction is to determine and give effect to the legislature’s intent. Solich v. George & Anna Portes Cancer Prevention Center of Chicago, Inc., 158 Ill. 2d 76, 81, 630 N.E.2d 820, 822 (1994). “The words and phrases contained within the language of a statute should not be considered in isolation but must be interpreted in light of other relevant provisions and the statute as a whole.” People v. Spurlock, 388 Ill. App. 3d 365, 371, 903 N.E.2d 874, 880 (2009). “If possible, we must give effect to every word, clause, and sentence and must not construe a statute in a way that renders any part inoperative, superfluous, or insignificant.” Spurlock, 388 Ill. App. 3d at 371, 903 N.E.2d at 880. “In addition to the statutory language, the courts may consider the purpose behind the law and the evils sought to be remedied, as well as the consequences that would result from construing the law one way or the other.” Spurlock, 388 Ill. App. 3d at 371, 903 N.E.2d at 880. With these principles in mind, we turn to the statutory language at issue.
Section 8 — 101(a) of the Tort Immunity Act provides as follows: “No civil action *** may be commenced in any court against a local entity or any of its employees for any injury unless it is commenced within one year from the date that the injury was received or the cause of action accrued.” 745 ILCS 10/8 — 101(a) (West 2006). Section 1 — 206 of the Tort Immunity Act defines a “local public entity” as follows:
“ ‘Local public entity’ includes a county, township, municipality, municipal corporation, school district, school board, educational service region, regional board of school trustees, trustees of schools of townships, treasurers of schools of townships, community college district, community college board, forest preserve district, park district, fire protection district, sanitary district, museum district, emergency telephone system board, and all other local governmental bodies. ‘Local public entity’ also includes library systems and any intergovernmental agency or similar entity formed pursuant to the Constitution of the State of Illinois or the Intergovernmental Cooperation Act as well as any not-for-profit corporation organized for the purpose of conducting public business. It does not include the State or any office, officer, department, division, bureau, board, commission, university[,] or similar agency of the State.” 745 ILCS 10/1 — 206 (West 2006).
Preliminarily, we note that the legislature used the term “local entity” in section 8 — 101(a) of the Tort Immunity Act but used the term “local public entity” in the remainder of the Act. The legislature’s use of the term “local entity,” rather than “local public entity,” in section 8 — 101(a) appears to be a scrivener’s error. In order to construe the statute to effectuate the intent of the legislature, we may alter, supply, or modify words and correct obvious mistakes. People v. Garrison, 82 Ill. 2d 444, 455, 412 N.E.2d 483, 489 (1980). It is clear that the legislature intended for section 8 — 101(a) to apply to actions against a “local public entity” as that term is defined in section 1 — 206, and we construe the statute accordingly. 745 ILCS 10/1 — 206, 8 — 101(a) (West 2006).
Section 1 — 206 of the Tort Immunity Act contains a list of various governmental entities included within the definition of a “local public entity,” but the list does not specifically include agencies created by interstate compacts. 745 ILCS 10/1 — 206 (West 2006). The supreme court has “observed that the term ‘local public entity,’ as used in the Tort Immunity Act, is ‘broadly defined.’ ”Carver v. Sheriff of La Salle County, 203 Ill. 2d 497, 512, 787 N.E.2d 127, 136 (2003), quoting Boyles v. Greater Peoria Mass Transit District, 113 Ill. 2d 545, 553, 499 N.E.2d 435, 438 (1986). “ ‘Illinois courts have long recognized that various public entities, although not expressly identified in the statute, are within the definition of “local public entity.” ’ ” Carver, 203 Ill. 2d at 512, 787 N.E.2d at 136, quoting Luciano v. Waubonsee Community College, 245 Ill. App. 3d 1077, 1083, 614 N.E.2d 904, 908 (1993). In order for Bi-State to qualify as a “local public entity,” however, it would have to fit within the general catchall category of “other local governmental bodies.” To determine whether the legislature intended to include interstate compact agencies within this general catchall category, we must look at the nature and characteristics of interstate compacts generally and of Bi-State specifically and interpret the Tort Immunity Act in light of those characteristics.
An interstate compact is an agreement between two or more states that addresses a common problem or issue that exists between those states. Hess v. Port Authority Trans-Hudson Corp., 513 U.S. 30, 40, 130 L. Ed. 2d 245, 255, 115 S. Ct. 394, 400-01 (1994). The states initially entered into interstate compacts to settle boundary disputes, but later the states began using interstate compacts for other governmental purposes, including the organization of mass passenger transportation services in urban boundary areas. M. Tripolitsiotis, Bridge Over Troubled Waters: The Application of State Law to Compact Clause Entities, 23 Yale L. & Pol’y Rev. 163, 169-72 (2005). The United States Constitution provides authority for states to enter into compacts with one another, but the United States Congress must consent to any such agreement. Article I, section 10, clause 3, of the United States Constitution provides in part, “No State shall, without the Consent of Congress, *** enter into any Agreement or Compact with another State ***.” U.S. Const., art. I, §10, cl. 3. Accordingly, interstate compacts involve a minimum of three separate sovereign-ties: at least two states and the federal government. Agencies created by compacts have characteristics that are unique from any other unit of government.
Upon entering into an interstate compact, a state effectively surrenders a portion of its sovereignty; the compact governs the relations of the parties with respect to the subject matter of the agreement and is superior to both prior and subsequent law. International Union of Operating Engineers, Local 542 v. Delaware River Joint Toll Bridge Comm’n, 311 E3d 273, 276 (3d Cir. 2002); Frontier Ditch Co. v. Southeastern Colorado Water Conservancy District, 761 P.2d 1117, 1123-24 (Colo. 1988), citing Texas v. New Mexico, 462 U.S. 554, 564, 77 L. Ed. 2d 1, 12, 103 S. Ct. 2558, 2565 (1983). A compact is a contract, and it may not be amended or modified without the consent of all the parties. Texas v. New Mexico, 482 U.S. 124, 128, 96 L. Ed. 2d 105, 114, 107 S. Ct. 2279, 2283 (1987); Carchman v. Nash, 473 U.S. 716, 749 n.18, 87 L. Ed. 2d 516, 539 n.18, 105 S. Ct. 3401, 3418 n.18 (1985) (Brennan, J., dissenting, joined by Marshall and Stevens, JJ.). Neither party to a compact may unilaterally pass laws that would burden the compact. Bi-State Development Agency of the Missouri-Illinois Metropolitan District v. Director of Revenue, 781 S.W.2d 80, 82 (Mo. 1989). It is “a legal document that must be construed and applied in accordance with its terms.” Texas v. New Mexico, 482 U.S. 124, 128, 96 L. Ed. 2d 105, 114, 107 S. Ct. 2279, 2283 (1987). Congressional consent “transforms an interstate compact *** into a law of the United States.” Cuyler v. Adams, 449 U.S. 433, 438, 66 L. Ed. 2d 641, 648, 101 S. Ct. 703, 707 (1981). “ ‘[U]nless the compact to which Congress has consented is somehow unconstitutional, no court may order relief inconsistent with its express terms.’ ” New Jersey v. New York, 523 U.S. 767, 811, 140 L. Ed. 2d 993, 1030, 118 S. Ct. 1726, 1750 (1998), quoting Texas v. New Mexico, 462 U.S. 554, 564, 77 L. Ed. 2d 1, 12, 103 S. Ct. 2558, 2565 (1983).
Agencies created by interstate compacts are “not neatly pigeonholed.” Redbird Engineering Sales, Inc. v. Bi-State Development Agency of Missouri-Illinois Metropolitan District, 806 S.W.2d 695, 699 (Mo. App. 1991). The United States Supreme Court explained, “Gauging actual control, particularly when an entity has multiple creator-controllers, can be a ‘perilous inquiry,’ ‘an uncertain and unreliable exercise.’ ” Hess, 513 U.S. at 47, 130 L. Ed. 2d at 260, 115 S. Ct. at 404, quoting A. Rogers, Clothing State Governmental Entities With Sovereign Immunity: Disarray in the Eleventh Amendment Arm-of-the-State Doctrine, 92 Colum. L. Rev. 1243, 1284 (1992). Agencies created by interstate compacts are unlike state-created agencies because “[the] ultimate control of every state-created entity resides with the State, for the State may destroy or reshape any unit it creates.” Hess, 513 U.S. at 47, 130 L. Ed. 2d at 260, 115 S. Ct. at 404. However, “no one State alone can control the course of a Compact Clause entity.” Hess, 513 U.S. at 47, 130 L. Ed. 2d at 260, 115 S. Ct. at 404. They are also distinguishable from state-created agencies by the requirement of congressional authorization before they can function. Central Midwest Interstate Low-Level Radioactive Waste Comm’n v. O’Leary, 873 E Supp. 159, 161 (C.D. Ill. 1995).
As noted above, Bi-State is a compact clause entity created from a compact between Illinois and Missouri. Both the Illinois legislature and the Missouri legislature cooperated in creating Bi-State by enacting identical legislation that adopted the compact agreement. 45 ILCS 105/0.01 et seq. (West 2006); Mo. Ann. Stat. §70.370 et seq. (West 2004). Illinois and Missouri each gave up a portion of its sovereignty by entering into the compact agreement. The compact defines the powers of Bi-State, and Congress’s approval of the compact states that Bi-State is prohibited from exercising any additional powers “unless and until such power or powers shall have been conferred upon the Bi-State Agency by the legislature of one of the States to the compact and concurred in by the legislature of the other and shall have been approved by an Act of Congress.” Act of August 31, 1950, Pub. L. No. 81 — 743, 64 Stat. 568; Ladue Local Lines, Inc., 433 E2d at 133 n.2.
Under the terms of the compact, Bi-State is “a body corporate and politic,” and its powers include the following: (1) planning, constructing, owning, operating, and maintaining bridges, airports, and terminals, (2) making plans for the “co[ ]ordination of streets, highways, parkways, parking areas, terminals, water supply and sewage and disposal works, recreational and conservation facilities and projects, land use pattern!,] and other matters in which joint or coordinated action of the communities within the areas will be generally beneficial,” (3) charging and collecting fees, (4) issuing bonds, (5) receiving contributions and appropriations from local, state, and federal governments, (6) disbursing funds for its activities, and (7) performing “all other necessary and incidental functions.” 45 ILCS 100/1 (West 2006); Mo. Ann. Stat. §70.370 (West 2004). Bi-State consists of 10 commissioners, 5 appointed from each state, and the agency may “appoint such officers and employees as it may require for the performance of its duties! ] and shall fix and determine their qualifications and duties.” 45 ILCS 100/1 (West 2006); Mo. Ann. Stat. §70.370 (West 2004). In 1959, Missouri and Illinois amended the compact by passing identical legislation that granted Bi-State additional powers necessary to operate and maintain passenger transportation facilities, and Congress approved the exercise of those additional powers in Pub. L. No. 86 — 303, §2, 73 Stat. 582. 45 ILCS 110/1 (West 2006); Mo. Ann. Stat. §70.373 (West 2004); Ladue Local Lines, Inc., 433 F.2d at 133 n.3.
As with other compact clause agencies, Bi-State’s powers are confined by the terms of the compact, and its powers cannot be altered or expanded without the consent of both Illinois and Missouri and approval from Congress. Each state gave up its sovereign right to exclusively control its portion of the District so that Bi-State could operate transportation services within the entire District for the betterment of both states. As a result, neither Illinois nor Missouri may act unilaterally with respect to modifying or expanding Bi-State’s powers, duties, or obligations. Bi-State is an autonomous entity that is vested with specific powers and authority to perform specific functions independent from the control of any one state.
Considering the unique nature of Bi-State as a compact clause entity and considering the Tort Immunity Act as a whole, we do not believe that the Illinois legislature intended to include Bi-State within the meaning of the term “local public entity” in the Tort Immunity Act. In construing the Tort Immunity Act, we may consider the consequences of construing the statute one way or the other. County of Du Page v. Illinois Labor Relations Board, 231 Ill. 2d 593, 604, 900 N.E.2d 1095, 1101 (2008). Each provision in the Tort Immunity Act must be evaluated in connection with every other section. Carroll v. Paddock, 199 Ill. 2d 16, 23, 764 N.E.2d 1118, 1122 (2002). Construing the Tort Immunity Act to include Bi-State within the definition of a “local public entity” would include Bi-State within the purview of sections of the Tort Immunity Act that cannot validly apply to it.
Article IX of the Tort Immunity Act, which is entitled “Payment of Claims and Judgment,” empowers and directs local public entities in the payment of claims and judgments. 745 ILCS 10/9 — 101 et seq. (West 2006). Article IX gives local public entities authorization to pay off judgments in installments over more than one fiscal year. 745 ILCS 10/9 — 104 (West 2006). Section 9 — 107 empowers local public entities to levy real estate taxes to cover the cost of insuring or otherwise defending themselves against workers’ compensation claims and tort claims for which they are liable under the Tort Immunity Act, as well as the payment of judgments and settlements of those claims. 745 ILCS 10/9 — 107 (West 2006). Illinois does not have the authority to unilaterally bestow that power to Bi-State.
The dissent concludes that section 9 — 107 would not invest Bi-State with the power to levy taxes, noting that the act has a separate definition for a “local taxing entity.” The plain language of section 9 — 107 does not limit its application to only a “local taxing entity.” (Compare section 9 — 105 with section 9 — 107 (745 ILCS 10/9 — 105, 9 — 107 (West 2006)).) Section 9 — 107’s plain language invests taxing power to all “local public entit[ies],” and in In re Consolidated Objections to Tax Levies of School District No. 205, 193 Ill. 2d 490, 497, 739 N.E.2d 508, 512 (2000), the supreme court stated, “Section 9 — 107 authorizes a local public entity to levy taxes upon all taxable property within its territory for purposes of section 9 — 102.”
Section 9 — 102 of the Tort Immunity Act “empowerfs] and directfsT local public entities “to pay any tort judgment or settlement for compensatory damages *** for which it or an employee while acting within the scope of his employment is liable in the manner provided in [article IX].” (Emphasis added.) 745 ILCS 10/9 — 102 (West 2006); In re Consolidated Objections to Tax Levies of School District No. 205, 193 Ill. 2d at 497, 739 N.E.2d at 512-13. Section 9 — 106 requires local public entities to set the rates for their services, or otherwise provide funds, “in an amount sufficient to pay all [their] tort judgments and settlements in accordance with [article IX of the Tort Immunity Act] and [their] obligations under the Workers’ Compensation Act, the Workers’ Occupational Diseases Act[,] and the Unemployment Insurance Act.” 745 ILCS 10/9 — 106 (West 2006). The legislature’s use of the word “shall” in section 9 — 106 indicates a mandatory requirement on all local public entities. See People v. Galan, 229 Ill. 2d 484, 532, 893 N.E.2d 597, 624 (2008) (the word “shall” indicates a mandatory requirement). The dissent maintains that section 9 — 106 “is in no way inconsistent” with the language of the interstate compact agreement (393 Ill. App. 3d at 1037), but one must ignore the section’s mandatory language to reach this conclusion.
The compact agreement between Missouri and Illinois does not give Bi-State the powers or obligations set forth in article IX, and no matter how desirable they may be, Illinois cannot unilaterally convey them to Bi-State by enacting the Tort Immunity Act. “To sanction such practice would lead to discord and a destruction of the purposes for which such bi[ ]state agencies are formed.” Delaware River & Bay Authority v. New Jersey Public Employment Relations Comm’n, 112 N.J. Super. 160, 166, 175, 270 A.2d 704, 707 (1970). “[T]he unilateral imposition of additional duties on [a compact clause entity] *** is impermissible absent express authorization in the compact or joint legislation by the two creator states.” Delaware River Port Authority v. Commonwealth, State Ethics Comm’n, 137 Pa. Commw. 170, 175, 585 A.2d 587, 589 (1991). Missouri has not consented to these additional powers or duties contained within article IX of the Tort Immunity Act by enacting identical legislation, nor has Congress granted approval. These provisions in article IX of the Tort Immunity Act, therefore, cannot validly apply to Bi-State.
For example, in C.T. Hellmuth & Associates, Inc. v. Washington Metropolitan Area Transit Authority, 414 F. Supp. 408, 409 (D. Md. 1976), the plaintiff sued an interstate compact agency created by Maryland, Virginia, and the District of Columbia. The plaintiff sought copies of certain documents pursuant to Maryland’s freedom-of-information statute. C.T. Hellmuth & Associates, Inc., 414 F. Supp. at 409. The plaintiff argued that the compact agency was an agency of the state and was within the purview of Maryland’s freedom-of-information statute. C.T. Hellmuth & Associates, Inc., 414 F. Supp. at 409. The court, however, held that Maryland’s statute did not apply to the compact. C.T. Hellmuth & Associates, Inc., 414 F. Supp. at 410.
The court noted that one party to a compact cannot “enact legislation which clearly would affect the other parties’ interests.” C.T. Hellmuth & Associates, Inc., 414 F. Supp. at 409. One party to a compact cannot unilaterally determine the types of information that should be accessible to the public and the circumstances under which the information would be made available. C.T. Hellmuth & Associates, Inc., 414 F. Supp. at 410. The court concluded that Maryland could not impose its freedom-of-information statute on the compact agency because that imposition would be in derogation of the compact and would be an intrusion on Virginia’s and the District of Columbia’s interests. C.T. Hellmuth & Associates, Inc., 414 F. Supp. at 410.
Likewise, in the present case, article IX of the Tort Immunity Act cannot apply to Bi-State because the Illinois legislature cannot unilaterally grant additional powers to or place additional burdens on Bi-State without an express concurrence from Missouri and congressional approval. Since the term “local public entity” as used in article IX of the Tort Immunity Act cannot apply to Bi-State, we construe the statute’s definition of a “local public entity” to exclude Bi-State for all the provisions of the Tort Immunity Act. “[T]he use of the same words or phrases in different sections of a statute should be given a consistent meaning unless legislative intent to the contrary is clearly expressed.” Mirabella v. Retirement Board of the County Employees’ Annuity & Benefit Fund, 198 Ill. App. 3d 971, 974, 556 N.E.2d 686, 688 (1990). In addition, we must not construe the Tort Immunity Act in a way that renders any part inoperative, superfluous, or insignificant. Bauer v. H.H. Hall Construction Co., 140 Ill. App. 3d 1025, 1028, 489 N.E.2d 31, 33 (1986).
Construing the Tort Immunity Act to include Bi-State within the definition of a “local public entity” would be in derogation of the compact and Congress’s approval of the compact. We presume that the legislature did not intentionally enact a statute that included invalid provisions. In addition, we presume that the legislature acted with knowledge of the terms of the bistate compact agreement, the terms of Congress’s approval of the agreement, and the limitation on Illinois’s ability to modify Bi-State’s powers or impose obligations on Bi-State. People v. Jones, 214 Ill. 2d 187, 199, 824 N.E.2d 239, 246 (2005) (it is presumed the legislature acts rationally and with full knowledge of all prior legislation).
Furthermore, the Illinois legislature has demonstrated its knowledge that Illinois and Missouri must enact identical legislation in order to modify Bi-State’s powers. After the compact was created in 1949, Illinois and Missouri amended the compact in 1959 to authorize Bi-State to operate and maintain passenger transportation facilities. Bi-State was invested with these additional powers by Illinois and Missouri enacting identical legislation that set out the additional powers and after Congress approved the additional powers. Ladue Local Lines, Inc., 433 F.2d at 133.
In 1980, Illinois and Missouri amended the compact to empower Bi-State to transfer property. Pub. Act 81 — 1419, eff. August 29, 1980. At the third reading of the bill amending Illinois’s compact legislation, one of the bill’s sponsors explained as follows:
“[I]t became necessary for [B]i-[S]tate to exchange some property with the Illinois Department of Transportation!!,] and there was a ruling that came down from the Attorney General’s Office that they did not have statutory authority to transfer property. So the Attorney [sic] General of Illinois and of Missouri recommended this legislation. Missouri has already passed identical legislation^] and it’s required that both states pass identical legislation so that the authority to transfer property is legal ***.” 81st Ill. Gen. Assem., House Proceedings, June 12,1980, at 51 (statements of Representative Flinn).
The other cosponsor stated: “[J]ust last week Governor Teasdale in Missouri signed the identical legislation, since the Bi-State Compact . . . identical legislation in this regard, has to be signed by both states. Missouri has done their job, and now we are seeking to do the same thing here in Illinois ***.” 81st Ill. Gen. Assem., Senate Proceedings, May 7, 1980, at 46 (statements of Senator Vadalabene). Senator Moore added: “This is a compact between the State of Illinois and the State of Missouri. The laws have to be identical between these two states in order for this particular district to function.” 81st Ill. Gen. Assem., Senate Proceedings, May 7, 1980, at 47 (statements of Senator Moore).
In 1985, the legislature passed a bill to amend the compact agreement to allow Bi-State to promote and build a world-trade center. Pub. Act 84 — 247, eff. January 1, 1986. The bill’s cosponsor explained as follows:
“It affects the City of St. Louis and the metro east area[ ] and the Bi-[S]tate Development Agency. In order to do anything in that area with [Bi-State], we must, both Missouri and Illinois, pass identical Bills. And what this Bill does is three basic things. It permits Bi-[S]tate to promote to develop the World Trade Center, to make contracts with all governments; local, state, or federal government; but, under no circumstances can the State of Illinois spend any of the state money involved in this project. It’s a permissive thing. We have to wait on Missouri to pass the identical Bill out.” 84th Ill. Gen. Assem., House Proceedings, June 20, 1985, at 182 (statements of Representative Flinn).
In 1994, the compact agreement was amended to grant Bi-State the power to hire a security force. Pub. Act 88 — 611, eff. January 1, 1995. Again, the bill’s cosponsor explained the need for identical legislation from both Missouri and Illinois:
“[W]e have light[ ]rail added to [Bi-State’s] transportation system down there, and we need the authority, in the case there’s a need for police officers, to hire police officers. We want to do it through contract. This is a Missouri-Illinois, Bi-State agency, and both states must pass some identical laws so it can be ratified by Congress.
*** Congress will ratify this, but they cannot ratify it unless both states have identical Bills and it’s a request by Bi-State to start with. So, both the Legislature in Missouri and our Legislature here, in Illinois [sic]. ***
*** Since this is a compact agency made by Congress to start with, each time they make a change up or down in their authority, it has to be ratified by Congress, but first it must be passed by both states.” 88th Ill. Gen. Assem., House Proceedings, June 8, 1994, at 58-59 (statements of Representative Flinn).
Accordingly, the Illinois legislative history of the compact agreement demonstrates that the Illinois legislature is cognizant that Missouri and Illinois must enact identical legislation on matters involving Bi-State’s powers and is aware of the need for congressional approval. Therefore, we do not believe that the legislature intended to sweep Bi-State into the purview of the Tort Immunity Act with the general catchall phrase “all other local governmental bodies,” when doing so would invest Bi-State with invalid powers, such as the power to levy taxes (745 ILCS 10/9 — 107 (West 2006)). “Bi-State has no taxing power.” Barket, Levy & Fine, Inc. v. St. Louis Thermal Energy Corp., 948 F.2d 1084, 1087 (8th Cir. 1991). If the legislature intended to include compact agencies such as Bi-State within the terms of the Tort Immunity Act, it would have done so expressly and in a way that would not have included those agencies within provisions of the Act that cannot apply to them. Illinois and Missouri had already created Bi-State by the time the Illinois legislature enacted the Tort Immunity Act in 1965. Neither party has pointed out and we have not found anything in the legislative history of the Tort Immunity Act that indicates that the legislature considered Bi-State specifically or interstate compact agencies generally in drafting the definition of a “local public entity” or in drafting any amendments to the definition. Without an express statement of intent from the legislature, we decline to extend the definition of a “local public entity” to include interstate compact agencies under a general catchall term. We hold that Bi-State is not a local public entity under the Tort Immunity Act; therefore, claims against Bi-State are not controlled by the one-year statute of limitations contained in section 8 — 101(a) of the Tort Immunity Act (745 ILCS 10/8 — 101(a) (West 2006)).
We are not asked to determine whether the State of Illinois can unilaterally enact a valid statute of limitations applicable to claims against Bi-State or whether such an enactment requires identical Missouri and Illinois laws along with Congress’s approval. Contrary to the dissent’s assertion, we take no position on that issue. Our only task is to answer the certified question, and in order to answer that question, we must determine the legislature’s intent. For the reasons noted above, our only holding in this decision is that the legislature did not intend to include Bi-State within the Tort Immunity Act’s definition of a “local public entity.”
In support of its argument that it qualifies as a local public entity, Bi-State cites Grady v. Bi-State Development Agency, 151 Ill. App. 3d 748, 502 N.E.2d 1087 (1986), where a different panel of this court held that Bi-State was a local public entity under the Tort Immunity Act. In that case, the plaintiff sued Bi-State for injuries she sustained while she was a passenger on one of Bi-State’s buses. Grady, 151 Ill. App. 3d at 749, 502 N.E.2d at 1088. At that time, the Tort Immunity Act required a plaintiff with a claim against a local public entity to give “notice of her claim within one year from the date that the injury was received or the cause of action accrued.” Grady, 151 Ill. App. 3d at 749, 502 N.E.2d at 1088, citing Ill. Rev. Stat. 1981, ch. 85, par. 8 — 102. The Grady court held that Bi-State was a local public entity under the Tort Immunity Act and that the plaintiff had failed to give Bi-State notice of her claim as required by the Tort Immunity Act. Grady, 151 Ill. App. 3d at 750, 502 N.E.2d at 1089.
We cannot overrule Grady (see In re Marriage of Gutman, 232 Ill. 2d 145, 149-50, 902 N.E.2d 631, 633-34 (2008)) but we disagree with the Grady court’s analysis, and we decline to follow it. We do not do so lightly, and we are mindful that considerations of stare decisis weigh heavily in the construction of a statute (People v. Antoine, 286 Ill. App. 3d 920, 924, 676 N.E.2d 1374, 1377 (1997)). Stare decisis, however, should not preclude us from correcting a mistake and interpreting the statute correctly. People v. Mitchell, 189 Ill. 2d 312, 339, 727 N.E.2d 254, 270 (2000). “Where it is clear that the court has made a mistake it will not decline to correct it, even though the rule may have been re[ ]asserted and acquiesced in for a long number of years.” Maki v. Frelk, 40 Ill. 2d 193, 196, 239 N.E.2d 445, 447 (1968).
The court in Grady did not analyze the nature of Bi-State as a compact clause entity and did not consider the consequences of including Bi-State within the definition of a “local public entity” “in light of other relevant provisions and the statute as a whole.” Spurlock, 388 Ill. App. 3d at 371, 903 N.E.2d at 880. We believe that Grady’s construction of the Tort Immunity Act to include Bi-State within the definition of a “local public entity” is contrary to legislative intent and, therefore, is prejudicial to the public interest. We will not follow a rule of law, no matter how well established, if doing so is likely to create “serious detriment” that is “prejudicial to the public interest.” McClintock v. Bi-State Development Agency, 228 Ill. App. 3d 382, 385, 591 N.E.2d 967, 970 (1992).
The dissent accuses us of turning “the concept of precedent on its head” and maintains that we are bound to follow Grady under horizontal stare decisis principles. 393 Ill. App. 3d at 1034. We disagree. In Illinois, “ ‘stare decisis requires courts to follow the decisions of higher courts[ ] but does not bind courts to follow decisions of equal or inferior courts.’ ” Gillen v. State Farm Mutual Automobile Insurance Co., 215 Ill. 2d 381, 392 n.2, 830 N.E.2d 575, 582 n.2 (2005), quoting Schiffner v. Motorola, Inc., 297 Ill. App. 3d 1099, 1102, 697 N.E.2d 868, 871 (1998). “[T]he opinion of one district, division, or panel of the appellate court is not binding on other districts, divisions, or panels.” O’Casek v. Children’s Home & Aid Society of Illinois, 229 Ill. 2d 421, 440, 892 N.E.2d 994, 1006-07 (2008). Accordingly, our panel is not bound by the earlier opinions of different panels of this court, and we can “part company with [earlier] decisionfs] without offending the doctrine of stare decisis.” O’Casek, 229 Ill. 2d at 440, 892 N.E.2d at 1007. We may deviate from our own precedent when we believe we have good cause, such as when the governing decision is badly reasoned. People v. Jones, 207 Ill. 2d 122, 134, 797 N.E.2d 640, 647 (2003).
We realize that when we reexamine an issue already ruled upon and arrive at an inapposite decision, “the reliance interests of litigants, the bench, and the bar” are affected. O’Casek, 229 Ill. 2d at 440, 892 N.E.2d at 1006. However, our duty as a reviewing court is to reach the correct decision under the law, and this duty is superior to all other considerations, including stare decisis. See People v. Mitchell, 189 Ill. 2d 312, 339, 727 N.E.2d 254, 270 (2000).
We are not bound by the Grady decision. Because we believe that Grady fundamentally misstates the law, we have good cause to depart from it, and our departure is consistent with the above principles of horizontal stare decisis. In fact, our good cause to deviate from Grady is highlighted by the dissent’s citation to Grady for the incorrect proposition of law that Bi-State’s powers include “exercising additional powers as shall be conferred on it by either State legislature.” Grady, 151 Ill. App. 3d at 750, 502 N.E.2d at 1089, citing Ill. Rev. Stat. 1981, ch. 127, par. 63r — 1; 393 Ill. App. 3d at 1035-36. Congress’s approval of the compact does not grant Bi-State the power to exercise “additional powers as shall be conferred on it by either state legislature.” Congress’s approval of the compact amended the compact agreement to prohibit Bi-State from exercising any additional powers “unless and until such power or powers shall have been conferred upon the Bi-State Agency by the legislature of one of the States to the compact and concurred in by the legislature of the other and shall have been approved by an Act of Congress.” Act of August 31, 1950, Pub. L. No. 81 — 743, 64 Stat. 568; Ladue Local Lines, Inc., 433 F.2d at 133 n.2. The Grady court’s analysis does not take into consideration Congress’s amendment to the compact agreement and, as a result, fundamentally misstates the law concerning Bi-State’s powers.
At the hearing on Bi-State’s motion to dismiss, the circuit court admitted the entire appellate record in Grady into evidence. Accordingly, the Grady record is a part of the record on appeal in the present case. In Grady, the party opposing Bi-State’s status as a local public entity chose not to participate in the appeal; therefore, the Grady court did not have the benefit of fully developed arguments on both sides of the issue. By contrast, in the present case, the issue of Bi-State’s status as a local public entity was fully litigated with an evidentiary hearing and extensive briefing on both sides of the issue. Therefore, the issue of Bi-State’s status as a local public entity is ripe for a reexamination based on the record before us, and a full review of the issue is consistent with the supreme court’s exercise of its supervisory authority that directed the circuit court to certify the question for our review.
The dissent finds support for its position in the Illinois Supreme Court’s exercise of its supervisory authority in the present case, insinuating that the court’s rare exercise of its supervisory authority reflects a veiled message from the court on how we should decide the merits of this case. Again, we disagree. The supreme court directed the circuit court to certify for an immediate appeal the issue of whether Bi-State is a local public entity under the Tort Immunity Act so the issue could be reviewed and analyzed by this court. The supreme court’s order was silent on the merits of the issue, and we do not take the supreme court’s supervisory order to mean anything more than what it says. If the supreme court’s supervisory order implied anything, it implied that we should fully consider the issue on its merits, and that is what we have done in deciding this case.
The dissent also finds support for the conclusion that Bi-State is a local public entity in the language of section 2 of the Transportation Cooperation Act of 1971 (the Transportation Cooperation Act) (5 ILCS 225/2 (West 2006)). The Transportation Cooperation Act grants authority to “units of local government” to join together by agreement or contract in order to develop, operate, and promote transportation systems and create a Transportation Service Association to exercise all powers conferred by the act. 5 ILCS 225/3, 4 (West 2006). Section 2 of the Transportation Cooperation Act defines “units of local government” to include “any authority, commission!,] or other entity which by virtue of an interstate compact approved by Congress is authorized to provide mass transportation.” 5 ILCS 225/2(e) (West 2006). We do not find the Transportation Cooperation Act persuasive because that statute was passed contrary to the Bi-State compact agreement. As we have previously noted, Congress amended the compact to prohibit Bi-State from exercising any additional powers “unless and until such power or powers shall have been conferred upon the Bi-State Agency by the legislature of one of the States to the compact and concurred in by the legislature of the other and shall have been approved by an Act of Congress.” Act of August 31, 1950, Pub. L. No. 81 — 743, 64 Stat. 568; Ladue Local Lines, Inc., 433 F.2d at 133 n.2. The Transportation Cooperation Act has not been passed by the Missouri legislature, nor has Congress approved its application to Bi-State.
Moreover, to the extent that the Transportation Cooperation Act is relevant, it demonstrates that when the Illinois legislature intends to include interstate compact agencies within a statute’s general definition, it does so expressly. In the present case, had the legislature intended to include compact clause agencies within the definition of a “local public entity” in the Tort Immunity Act, it would have used similar language, instead of relying on the general catchall phrase “all other local governmental bodies.”
As a final matter, we address the evidentiary hearing the circuit court conducted on the motion to dismiss. In opposing Bi-State’s motion to dismiss, the plaintiffs counsel argued that the Grady opinion was procured by fraudulent statements contained in Bi-State’s ex parte petition for leave to appeal and in its brief in that case. As noted above, at the hearing on Bi-State’s motion to dismiss, the circuit court admitted the entire appellate record in Grady into evidence. In addition, the circuit court received testimony from Bi-State’s general counsel concerning the Grady appeal.
Bi-State’s general counsel testified that she did not represent Bi-State in the Grady appeal, but she identified incorrect statements contained in Bi-State’s brief in the Grady appeal. First, Bi-State’s brief in Grady incorrectly stated that Bi-State was formed pursuant to the Local Mass Transit District Act (Ill. Rev. Stat. 1981, ch. HP/s, par. 351 et seq. (now see 70 ILCS 3610/1 et seq. (West 2006))), rather than the Bi-State Development Compact Act (Ill. Rev. Stat. 1981, ch. 127, par. 63r — 1 et seq. (now see 45 ILCS 100/0.01 et seq. (West 2006))). Second, the brief incorrectly stated that the Metro-East Mass Transit District of St. Clair County, which was formed pursuant to the Local Mass Transit District Act (Ill. Rev. Stat. 1981, ch. HP/s, par. 351 et seq. (now see 70 ILCS 3610/1 et seq. (West 2006))), was a division of Bi-State. Bi-State’s general counsel explained that Bi-State provides bus and rail service to St. Clair County through a contract with Metro-East Mass Transit District of St. Clair County.
At the conclusion of the evidentiary hearing, the circuit court denied Bi-State’s motion to dismiss. The circuit court declined to follow Grady, in part, because the court concluded that the incorrect statements in Bi-State’s Grady brief “were deliberate lies that [Bi-State] knew would not be contradicted.” The circuit court concluded, “Grady, a decision procured by fraud, should be accorded the weight it deserves, none.”
The circuit court overstepped its authority in finding that the • Grady decision was procured by fraud and should not be accorded precedential value. A circuit court does not have authority to collaterally attack controlling appellate court case authority or its precedential value by independently reviewing the underlying appellate court file and scrutinizing the winning parties’ arguments. Grady was binding authority, and a circuit court was not free to disregard it. In re R.C., 195 Ill. 2d 291, 298, 745 N.E.2d 1233, 1238 (2001). “It is the absolute duty of the circuit court to follow the decisions of the appellate court.” In re A.A., 181 Ill. 2d 32, 36, 690 N.E.2d 980, 982 (1998). Parenthetically, we note that in its analysis the Grady court did not rely on any of the incorrect statements.
The circuit court was obligated to apply its findings of fact to the law established by our Grady decision. The proper procedure when a circuit court entertains a genuine doubt about the continued vitality of established precident is to “rule in accordance with existing law and enter a Rule 304(a) finding (155 Ill. 2d R. 304(a)) or certify the question for interlocutory appeal under Rule 308 (155 Ill. 2d R. 308).” In re Marriage of Baylor, 324 Ill. App. 3d 213, 218, 753 N.E.2d 1264, 1268 (2001).
CONCLUSION
For the foregoing reasons, we hold that Bi-State is not a local public entity as defined by section 1 — 206 of the Tort Immunity Act (745 ILCS 10/1 — 206 (West 2006)).
Certified question answered.
CHAPMAN, J., concurs.