; and (C) in subparagraph (D) by striking and commuter railroad carriers using the Northeast Corridor selected by the Secretary and inserting railroad carriers and commuter authorities using the Northeast Corridor, as determined by the Commission ; (2) by striking paragraph (2) of subsection (a) and inserting the following: (2) At least 2 of the members described in paragraph (1)(B) shall be career appointees, as such term is defined in section 3132(a) of title 5. ; (3) in subsection (b)(3)(B)— (A) in clause (i) by inserting , including ridership trends, before along the Northeast Corridor ; (B) in clause (ii) by striking capital investment plan described in section 24904. and inserting first year of the capital investment plan described in section 24904; and ; and (C) by adding at the end the following: (iii) progress in assessing and eliminating the state-of-good-repair backlog. ; (4) in subsection (c)— (A) by striking (1) Development and all that follows through standardized policy and inserting the following: (1) Policy The Commission shall— (A) maintain and update, as appropriate, the Northeast Corridor Commuter and Intercity Rail Cost Allocation Policy approved on September 17, 2015, ; (B) in paragraph (1)— (i) in subparagraph (B) by striking a proposed timetable for implementing and inserting timetables for implementing and maintaining ; (ii) in subparagraph (C) by striking the policy and the timetable and inserting updates to the policy and the timetables ; and (iii) by striking subparagraph (D) and inserting the following: (D) support the efforts of the members of the Commission to implement the policy in accordance with such timetables; and ; (C) in paragraph (2)— (i) by striking the first sentence and inserting In accordance with the timetable developed in paragraph (1), Amtrak and commuter authorities on the Northeast Corridor shall implement the policy developed under paragraph (1) in agreements for usage of facilities or services.