; and (4) $30,086,000 shall be for Administrative Expenses under section 4001(a)(6) of the Fixing America's Surface Transportation Act: Provided further , That for amounts subject to the obligation limitation under this heading during fiscal year 2021, the Federal share of activities undertaken pursuant to chapter 4 of title 23, United States Code, shall be, at the option of the recipient, up to 100 percent: Provided further , That none of the funds made available by this Act shall be used for construction, rehabilitation, or remodeling costs, or for office furnishings and fixtures for State, local, or private buildings or structures: Provided further , That not to exceed $500,000 of the funds made available for ‘National Priority Safety Programs’ under section 405 of title 23, United States Code, for ‘Impaired Driving Countermeasures’ (as described in subsection (d) of that section) shall be available for technical assistance to the States: Provided further , That with respect to the ‘Transfers’ provision under section 405(a)(8) of title 23, United States Code, any amounts transferred to increase the amounts made available under section 402 shall include the obligation authority for such amounts: Provided further , That the Administrator shall notify the House and Senate Committees on Appropriations of any exercise of the authority granted under the preceding proviso or under section 405(a)(8) of title 23, United States Code, not later than 5 days after exercising such authority. Administrative provisions—national highway traffic safety administration 140. An additional $130,000 shall be made available to the National Highway Traffic Safety Administration, out of the amount limited for section 402 of title 23, United States Code, to pay for travel and related expenses for State management reviews and to pay for core competency development training and related expenses for highway safety staff. 141. The limitations on obligations for the programs of the National Highway Traffic Safety Administration set in this