105 STAT. 2148 PUBLIC LAW 102-240—DEC. 18, 1991 with the fee system established under clause (iv) of this subparagraph; "(ii) shall require that copies of the receipt issued under clause (i) of this subparagraph be kept in each of the carrier's commercial motor vehicles; "(iii) shall not require decals, stamps, cab cards, or any other means of registering or identifying specific vehicles operated by the carrier; "(iv) shall establish a fee system for the filing of proof of insurance as provided under subparagraph (A)(ii) of this paragraph that (I) will be based on the number of commercial motor vehicles the carrier operates in a State and on the number of States in which the carrier operates, (II) will minimize the costs of complying with the registration system, and (III) will result in a fee for each participating State that is equal to the fee, not to exceed $10 per vehicle, that such State collected or charged as of November 15, 1991; and "(v) shall not authorize the charging or collection of any fee for filing and maintaining a certificate or permit under subparagraph (A)(i) of this paragraph. "(C) PROHIBITED FEES. —The charging or collection of any fee under this section that is not in accordance with the fee system established under subparagraph (B)(iv) of this paragraph shall be deemed to be a burden on interstate commerce. " (D) LIMITATION ON PARTICIPATION BY STATES. —Only a State which, as of January 1, 1991, charged or collected a fee for a vehicle identification stamp or number under part 1023 of title 49, Code of Federal Regulations, shall be eligible to participate as a registration State under this subsection or to receive any fee revenue under this subsection. "(3) EFFECTIVE DATE OF AMENDMENTS.—Amendments prescribed under this subsection shall take effect by January 1, 1994. "(d) INTERPRETATION AUTHORITY OF COMMISSION. —This section does not affect the authority of the Commission to interpret its regulations and certificates and permits issued under section 10922 or 10923 of this title.". SEC. 4006. VEHICLE LENGTH RESTRICTION. (a) CARGO CARRYING UNIT LIMITATION.— Section 411 of the Surface Transportation Assistance Act of 1982 (49 U.S.C. App. 2311) is amended by adding at the end the following new subsection: "( j) CARGO CARRYING UNIT LIMITATION. — "(1) IN GENERAL. — No State shall allow by statute, regulation, permit, or any other means the operation on any segment of the National System of Interstate and Defense Highways and those classes of qualifying Federal-aid primary system highways as designated by the Secretary pursuant to subsection (e) of this section, of any commercial motor vehicle combination (except for those vehicles and loads which cannot be easily dismantled or divided and which have been issued special permits in accordance with applicable State laws) with 2 or more cargo carrying units (not including the truck tractor) whose cargo carrying units exceed—
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