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 construction, alteration, and repair of buildings and improvements at the Transportation Technology Center. CONSOLIDATED RAIL INFRASTRUCTURE AND SAFETY IMPROVEMENTS For necessary expenses related to Consolidated Rail Infrastructure and Safety Improvements grants, as authorized by section 22907 of title 49, United States Code, $258,464,439 to remain available until expended: Provided, That of the amounts made available under this heading in this Act, $28,864,439 shall be made available for the purposes, and in amounts, specified for Community Project Funding in the table entitled “Community Project Funding” included in the Report accompanying this Act: Provided further , That amounts made available for Community Project Funding under this heading in this Act shall be available for railroad project planning activities of projects otherwise eligible under 22907(c): Provided further , That requirements under subsections (g) and (l) of section 22907 of title 49, United States Code, shall not apply to the amounts made available under this heading in this Act for Community Project Funding: Provided further , That for amounts made available under this heading in this Act, eligible recipients under section 22907(b)(7) of title 49, United States Code, shall include any holding company of a Class II railroad or Class III railroad (as those terms are defined in section 20102 of title 49, United States Code): Provided further , That the Secretary may withhold up to 2 percent of the amounts made available under this heading in this Act for the costs of award and project management oversight of grants carried out under title 49, United States Code. NORTHEAST CORRIDOR GRANTS TO THE NATIONAL RAILROAD PASSENGER CORPORATION To enable the Secretary of Transportation to make grants to