; and (B) of remaining costs, as defined under section 5307(d)(3), that were budgeted for roadways for such project. (i) Requirements of section 5307 Except as otherwise provided in this section, a grant under this section shall be subject to the requirements of section 5307. (j) Availability of funds (1) In general Amounts made available to carry out this section shall remain available for 4 fiscal years after the fiscal year for which the amount was made available. (2) Unobligated amounts After the expiration of the period described in paragraph (1) for an amount made available to carry out this section, any unobligated amounts made available to carry out this section shall be added to the amounts made available for the following fiscal year. (k) Eligible recipients In this section, the term eligible recipient means a recipient of a grant under section 5307 in an urbanized area with a population greater than 500,000. . (b) Clerical amendment The analysis for chapter 53 of title 49, United States Code, is amended by inserting after the item relating to section 5307 the following new item: 5308. Multi-jurisdictional bus frequency and ridership competitive grants. . 2202. Incentivizing frequency in the urban formula Section 5336 of title 49, United States Code, is amended— (1) in subsection (b)— (A) in paragraph (2)— (i) in subparagraph (A)— (I) in the matter preceding clause (i) by striking 95.61 percent and inserting 95 percent ; (II) in clause (i) by striking 95.61 percent and inserting 95 percent ; and (III) in clause (ii) by striking 95.61 percent and inserting 95 percent ; and (ii) in subparagraph (B)— (I) in the matter preceding clause (i) by striking 4.39 percent and inserting 5 percent ; (II) in clause (i)— (aa) by inserting in the highest 25 percent of routes by ridership before multiplied by