; and (B) innovation, energy efficiency, private sector participation, and productivity. 3. Funding limitation Notwithstanding any other provision of law, if the Secretary of Transportation determines for any of fiscal years 2019 through 2023 that the aggregate amount required to carry out transportation programs and projects under this Act and amendments made by this Act exceeds the estimated aggregate amount in the Highway Trust Fund available for those programs and projects for the fiscal year, each amount made available for that program or project shall be reduced by the pro rata percentage required to reduce the aggregate amount required to carry out those programs and projects to an amount equal to that available for those programs and projects in the Highway Trust Fund for the fiscal year. 4. Funding for core highway programs (a) In general (1) Authorization of appropriations The following sums are authorized to be appropriated out of the Highway Trust Fund (other than the Mass Transit Account): (A) Federal-aid highway program, etc For the national highway performance program under section 119 of title 23, United States Code, the surface transportation block grant program under section 133 of that title, and the highway safety improvement program under section 148 of that title, for each of fiscal years 2019 through 2023, an aggregate amount not to exceed 10 percent of the balance of the Highway Trust Fund (other than the Mass Transit Account) as estimated (taking into account estimated revenues) at the beginning of each such fiscal year. (B) Emergency relief For emergency relief under section 125 of title 23, United States Code, $100,000,000 for each of fiscal years 2019 through 2023. (C) Federal lands programs (i) Federal lands transportation program For the Federal lands transportation program under section 203 of title 23, United States Code, $300,000,000 for each of fiscal years 2019 through 2023, of which $240,000,000 of the amount made available for each fiscal year shall be the amount for the