(3) TRANSFERS FROM THE AIRPORT AND AIRWAY TRUST FUND ON ACCOUNT OF CERTAIN SECTION 34 CREDITS.-The Secretary of the Treasury shall pay from time to time from the Airport and Airway Trust Fund into the general fund of the Treasury amounts equivalent to the credits allowed under section 34 with respect to fuel used after August 31, 1982. Such amounts shall be transferred on the basis of estimates by the Secretary of the Treasury, and proper adjustments shall be made in amounts subsequently transferred to the extent prior estimates were in excess of or less than the credits allowed.

(4) TRANSFERS FOR REFUNDS AND CREDITS NOT TO EXCEED TRUST FUND REVENUES ATTRIBUTABLE TO FUEL USED.-The amounts payable from the Airport and Airway Trust Fund under paragraph (2) or (3) shall not exceed the amounts required to be appropriated to such Trust Fund with respect to fuel so used.

(5) TRANSFERS FROM AIRPORT AND AIRWAY TRUST FUND ON ACCOUNT OF REFUNDS OF TAXES ON TRANSPOTATION BY AIR.

The Secretary of the Treasury shall pay from time to time from the Airport and Airway Trust Fund into the general fund of the Treasury amounts equivalent to the amounts paid after December 31, 1995, under section 6402 (relating to authority to make credits or refunds) or section 6415 (relating to credits or refunds to persons who collected certain taxes) in respect of taxes under sections 4261 and 4271.

(6) TRANSFERS FROM THE AIRPORT AND AIRWAY TRUST FUND ON ACCOUNT OF CERTAIN AIRPORTS.-The Secretary of the Treasury may transfer from the Airport and Airway Trust Fund to the Secretary of Transportation or the Administrator of the Federal Aviation Administration an amount to make a payment to an airport affected by a diversion that is the subject of an administrative action under paragraph (3) or a civil action under paragraph (4) of section 47107(n) of title 49, United States Code.

(e) CERTAIN TAXES ON ALCOHOL MIXTURES TO REMAIN IN GENERAL FUND. For purposes of this section, the amounts which would (but for this subsection) be required to be appropriated under subparagraphs (A), (C), and (D) of subsection (b)(1) shall be reduced by

(1) 0.6 cent per gallon in the case of taxes imposed on any mixture at least 10 percent of which is alcohol (as defined in section 4081(c)(3)) if any portion of such alcohol is ethanol; and

(2) 0.67 cent per gallon in the case of fuel used in producing a mixture described in paragraph (1).

(f) LIMITATION ON TRANSFERS TO TRUST FUND.

(1) IN GENERAL.-Except as provided in paragraph (2), no amount may be appropriated or credited to the Airport and Airway Trust Fund on and after the date of any expenditure from the Airport and Airway Trust Fund which is not permitted by this section. The determination of whether an expenditure is so permitted shall be made without regard to

(A) any provision of law which is not contained or referenced in this title or in a revenue Act; and

(B) whether such provision of law is a subsequently enacted provision or directly or indirectly seeks to waive the application of this subsection.

(2) EXCEPTION FOR PRIOR OBLIGATIONS.-Paragraph (1) shall not apply to any expenditure to liquidate any contract entered into (or for any amount otherwise obligated) before October 1, 2003, in accordance with the provisions of this section. SEC. 9503. HIGHWAY TRUST FUND.

(a) CREATION OF TRUST FUND.-There is established in the Treasury of the United States a trust fund to be known as the "Highway Trust Fund", consisting of such amounts as may be appropriated or credited to the Highway Trust Fund as provided in this section or section 9602(b).

(b) TRANSFER TO HIGHWAY TRUST FUND OF AMOUNTS EQUIVALENT TO CERTAIN TAXES.

(1) IN GENERAL.-There are hereby appropriated to the Highway Trust Fund amounts equivalent to the taxes received in the Treasury before October 1, 2005, under the following provisions

(A) section 4041 (relating to taxes on diesel fuels and special motor fuels),

(B) section 4051 (relating to retail tax on heavy trucks and trailers),

(C) section 4071 (relating to tax on tires),

(D) section 4081 (relating to tax on gasoline, diesel fuel, and kerosene), and,

(E) section 4481 (relating to tax on use of certain vehicles).

(2) LIABILITIES INCURRED BEFORE OCTOBER 1, 2005.-There are hereby appropriated to the Highway Trust Fund amounts equivalent to the taxes which are received in the Treasury after September 30, 2005, and before July 1, 2006, and which are attributable to liability for tax incurred before October 1, 2005, under the provisions described in paragraph (1).

(3) ADJUSTMENTS FOR AVIATION USES. The amounts described in paragraphs (1) and (2) with respect to any period shall (before the application of this subsection) be reduced by appropriate amounts to reflect any amounts transferred to the Airport and Airway Trust Fund under section 9502(b) with respect to such period.

(4) CERTAIN TAXES NOT TRANSFERRED TO HIGHWAY TRUST FUND. For purposes of paragraphs (1) and (2), there shall not be taken into account the taxes imposed by

(A) section 4041(d),

(B) section 4081 to the extent attributable to the rate specified in section 4081(a)(2)(B),

(C) section 4041 or 4081 to the extent attributable to fuel used in a train,

(D) in the case of gasoline and special motor fuels used as described in paragraph (4)(D) or (5)(B) of subsection (c), section 4041 or 4081 with respect to so much of the rate of tax as exceeds 11.5 cents per gallon,

(E) in the case of fuels described in section 4041(b)(2)(A), 4041(k), or 4081(c), section 4041 or 4081 be

fore October 1, 2005, with respect to a rate equal to 2.5 cents per gallon, or

(F) in the case of fuels described in section 4081(c)(2), such section before October 1, 2005, with respect to a rate equal to 2.8 cents per gallon.

(5) GENERAL REVENUE DEPOSITS OF CERTAIN TAXES ON ALCOHOL MIXTURES.-For purposes of this section, the amounts which would (but for this paragraph) be required to be appropriated under subparagraphs (A), and (E) of paragraph (1) shall be reduced by

(A) 0.6 cent per gallon in the case of taxes imposed on any mixture at least 10 percent of which is alcohol (as defined in section 4081(c)(3)) if any portion of such alcohol is ethanol, and

(B) 0.67 cent per gallon in the case of gasoline, diesel fuel, or kerosene used in producing a mixture described in subparagraph (A).

(6) LIMITATION ON TRANSFERS TO HIGHWAY TRUST FUND.—

(A) IN GENERAL.-Except as provided in subparagraph (B), no amount may be appropriated to the Highway Trust Fund on and after the date of any expenditure from the Highway Trust Fund which is not permitted by this section. The determination of whether an expenditure is so permitted shall be made without regard to

(i) any provision of law which is not contained or referenced in this title or in a revenue Act, and

(ii) whether such provision of law is a subsequently enacted provision or directly or indirectly seeks to waive the application of this paragraph.

(B) EXCEPTION FOR PRIOR OBLIGATIONS.-Subparagraph (A) shall not apply to any expenditure to liquidate any contract entered into (or for any amount otherwise obligated) before October 1, 2003, in accordance with the provisions of this section.

(c) EXPENDITURES FROM HIGHWAY TRUST FUND.

(1) FEDERAL-AID HIGHWAY PROGRAM.-Except as provided in subsection (e), amounts in the Highway Trust Fund shall be available, as provided by appropriation Acts, for making expenditures before October 1, 2003, to meet those obligations of the United States heretofore or hereafter incurred which are

(A)_authorized by law to be paid out of the Highway Trust Fund established by section 209 of the Highway Revenue Act of 1956,

(B) authorized to be paid out of the Highway Trust Fund under title I or II of the Surface Transportation Assistance Act of 1982,

(C) authorized to be paid out of the Highway Trust Fund under the Surface Transportation and Uniform Relocation Assistance Act of 1987,

(D) authorized to be paid out of the Highway Trust Fund under the Intermodal Surface Transportation Efficiency Act of 1991, or

(E) authorized to be paid out of the Highway Trust Fund under the Transportation Equity Act for the 21st Century.

In determining the authorizations under the Acts referred to in the preceding subparagraphs, such Acts shall be applied as in effect on the date of the enactment of the TEA 21 Restoration Act.

(2) TRANSFERS FROM HIGHWAY TRUST FUND FOR CERTAIN REPAYMENTS AND CREDITS.

(A) IN GENERAL.-The Secretary shall pay from time to time from the Highway Trust Fund into the general fund of the Treasury amounts equivalent to—

(i) the amounts paid before July 1, 2006, under

(I) section 6420 (relating to amounts paid in respect of gasoline used on farms),

(II) section 6421 (relating to amounts paid in respect of gasoline used for certain nonhighway purposes or by local transit systems), and

(III) section 6427 (relating to fuels not used for taxable purposes), on the basis of claims filed for periods ending before October 1, 2005, and (ii) the credits allowed under section 34 (relating to credit for certain uses of fuel) with respect to fuel used before October 1, 2005.

The amounts payable from the Highway Trust Fund under this subparagraph or paragraph (3) shall be determined by taking into account only the portion of the taxes which are deposited into the Highway Trust Fund.

(B) TRANSFERS BASED ON ESTIMATES.-Transfers under subparagraph (A) shall be made on the basis of estimates by the Secretary, and proper adjustments shall be made in amounts subsequently transferred to the extent prior estimates were in excess or less than the amounts required to be transferred.

(C) EXCEPTION FOR USE IN AIRCRAFT AND MOTORBOATS. This paragraph shall not apply to amounts estimated by the Secretary as attributable to use of gasoline and special fuels in motorboats or in aircraft.

(3) FLOOR STOCKS REFUNDS.-The Secretary shall pay from time to time from the Highway Trust Fund into the general fund of the Treasury amounts equivalent to the floor stocks refunds made before July 1, 2006, under section 6412(a).

(4) TRANSFERS FROM THE TRUST FUND FOR MOTORBOAT

FUEL TAXES.—

(A) TRANSFER TO BOAT SAFETY ACCOUNT.—

(i) IN GENERAL.-The Secretary shall pay from time to time from the Highway Trust Fund into the Boat Safety Account in the Aquatic Resources Trust Fund amounts (as determined by him) equivalent to the motorboat fuel taxes received on or after October 1, 1980, and before October 1, 2005.

(ii) LIMITATIONS.

(I) LIMIT ON TRANSFERS DURING ANY FISCAL YEAR. The aggregate amount transferred under this subparagraph during any fiscal year shall not exceed $60,000,000 for each of fiscal years 1989 and 1990 and $70,000,000 for each fiscal year thereafter.

(II) LIMIT ON AMOUNT IN FUND.-No amount shall be transferred under this subparagraph if the Secretary determines that such transfer would result in increasing the amount in the Boat Safety Account to a sum in excess of $60,000,000 for each of fiscal years 1989 and 1990 and $70,000,000 for each fiscal year thereafter.

In making the determination under subclause (II) for any fiscal year, the Secretary shall not take into account any amount appropriated from the Boat Safety Account in any preceding fiscal year but not distributed.

(B) $1,000,000 PER YEAR OF EXCESS TRANSFERRED TO LAND AND WATER CONSERVATION FUND.

(i) IN GENERAL.-Any amount received in the Highway Trust Fund

(I) which is attributable to motorboat fuel taxes, and

(II) which is not transferred from the Highway Trust Fund under subparagraph (A),

shall be transferred (subject to the limitation of clause (ii)) by the Secretary from the Highway Trust Fund into the land and water conservation fund provided for in title I of the Land and Water Conservation Fund Act of 1965.

(ii) LIMITATION.-The aggregate amount transferred under this subparagraph during any fiscal year shall not exceed $1,000,000.

(C) EXCESS FUNDS TRANSFERRED TO SPORT FISH RESTORATION ACCOUNT.-Any amount received in the Highway Trust Fund

(i) which is attributable to motorboat fuel taxes, and

(ii) which is not transferred from the Highway Trust Fund under subparagraph (A) or (B),shall be transferred by the Secretary from the Highway Trust Fund into the Sport Fish Restoration Account in the Aquatic Resources Trust Fund.

(D) MOTORBOAT FUEL TAXES.-For purposes of this paragraph, the term "motorboat fuel taxes" means the taxes under section 4041(a)(2) with respect to special motor fuels used as fuel in motorboats and under section 4081 with respect to gasoline used as fuel in motorboats, but only to the extent such taxes are deposited into the Highway Trust Fund.

(E) DETERMINATION.-The amount of payments made under this paragraph after October 1, 1986 shall be determined by the Secretary in accordance with the methodology described in the Treasury Department's Report to Congress of June 1986 entitled "Gasoline Excise Tax Revenues Attributable to Fuel Used in Recreational Motorboats."

(5) TRANSFERS FROM THE TRUST FUND FOR SMALL-ENGINE

FUEL TAXES.

(A) IN GENERAL.-The Secretary shall pay from time to time from the Highway Trust Fund into the Sport Fish