( 5 U.S.C. 7905 note): Provided , That the Department shall maintain a reasonable operating reserve in the Working Capital Fund, to be expended in advance to provide uninterrupted transit benefits to Government employees: Provided further , That such reserve shall not exceed 1 month of benefits payable and may be used only for the purpose of providing for the continuation of transit benefits: Provided further , That the Working Capital Fund shall be fully reimbursed by each customer agency from available funds for the actual cost of the transit benefit. 104. Notwithstanding section 3324 of title 31, United States Code, in addition to authority provided by section 327 of title 49, United States Code, the Department’s Working Capital Fund is authorized to provide payments in advance to vendors that are necessary to carry out the Federal transit pass transportation fringe benefit program under Executive Order No. 13150 and section 3049 of SAFETEA–LU ( 5 U.S.C. 7905 note): Provided , That the Department shall include adequate safeguards in the contract with the vendors to ensure timely and high-quality performance under the contract. 105. Receipts collected in the Department’s Working Capital Fund, as authorized by section 327 of title 49, United States Code, for unused van pool benefits, in an amount not to exceed 10 percent of fiscal year 2021 collections, shall be available until expended in the Department’s Working Capital Fund to provide contractual services in support of section 190 of this Act: Provided , That obligations in fiscal year 2021 of such collections shall not exceed $1,000,000. 106. (a) The remaining unobligated balances, as of September 30, 2020, from amounts made available for the “Department of Transportation—Office of the Secretary—National Infrastructure Investments” in division K of the Consolidated Appropriations Act, 2017 ( Public Law 115–31 ) are hereby permanently rescinded, and an amount of additional new budget authority equivalent to the amount rescinded is hereby appropriated on