provided under this heading in this Act and previously unawarded funds provided under this heading in fiscal year 2017 by Public Law 115–31 and fiscal year 2018 by Public Law 115–141 , no later than 30 days after enactment of this Act: Provided further , That the Secretary shall announce the selection of projects to receive awards for the funds in the previous proviso no later than 180 days after enactment of this Act. Consolidated rail infrastructure and safety improvements For necessary expenses related to Consolidated Rail Infrastructure and Safety Improvements Grants, as authorized by section 24407 of title 49, United States Code, $255,000,000, to remain available until expended: Provided , That section 24405(f) of title 49, United States Code, shall not apply to projects for the implementation of positive train control systems otherwise eligible under section 24407(c)(1) of title 49, United States Code: Provided further , That amounts available under this heading for projects selected for commuter rail passenger transportation may be transferred by the Secretary, after selection, to the appropriate agencies to be administered in accordance with chapter 53 of title 49, United States Code: Provided further , That the Secretary shall not limit eligible projects from consideration for funding for planning, engineering, environmental, construction, and design elements of the same project in the same application: Provided further , That unobligated balances remaining after 4 years from the date of enactment may be used for any eligible project under section 24407(c) of title 49, United States Code: Provided further , That the Secretary may withhold up to one percent of the amount provided under this heading for the costs of award and project management oversight of grants carried out under section 24407 of title 49, United States Code: Provided further , That the Secretary shall issue the Notice of Funding Opportunity that encompasses previously unawarded funds provided under this heading in fiscal year 2018 by