; and (4) $41,100,800 shall be for grant administrative expenses under chapter 4 of title 23, United States Code: Provided further, That none of these funds 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, within 5 days. ADMINISTRATIVE PROVISION—NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION 140. The limitations on obligations for the programs of the National Highway Traffic Safety Administration set in this Act shall not apply to obligations for which obligation authority was made available in previous public laws but only to the extent that the obligation authority has not lapsed or been used. Federal Railroad Administration SAFETY AND OPERATIONS For necessary expenses of the Federal Railroad Administration, not otherwise provided for, $273,458,000, of which $25,000,000 shall remain available until expended. RAILROAD RESEARCH AND DEVELOPMENT For necessary expenses for railroad research and development, $44,000,000, to remain available until expended: Provided, That of the amounts provided under this heading, up to $3,000,000 shall be available pursuant to section 20108(d) of title 49, United States Code, for the