; and (2) by adding at the end the following: (2) Nothing in this section may be construed to prevent the use of airport revenue for the prorated maintenance and improvement costs of the on-airport portion of the surface transportation facility, subject to the provisions of section 47107(b)(4). . 1209. Repeal of inherently low-emission airport vehicle pilot program (a) Repeal Section 47136 is repealed. (b) Technical and conforming amendments The table of contents for chapter 471 is amended by striking the item relating to section 47136 and inserting the following: 47136. [Reserved]. . 1210. Modification of zero-emission airport vehicles and infrastructure pilot program Section 47136a is amended— (1) in subsection (a), by striking , including and inserting used exclusively for transporting passengers on-airport or for employee shuttle buses within the airport, including ; and (2) in subsection (f), by inserting , as in effect on the day before the date of enactment of the Federal Aviation Administration Reauthorization Act of 2017 , after section 47136 . 1211. Repeal of airport ground support equipment emissions retrofit pilot program (a) Repeal Section 47140 is repealed. (b) Technical and conforming amendments The table of contents for chapter 471 is amended by striking the item relating to section 47140 and inserting the following: 47140. [Reserved]. . 1212. Funding eligibility for airport energy efficiency assessments (a) Cost reimbursements Section 47140a(a) is amended by striking airport. and inserting airport, and to reimburse the airport sponsor for the costs incurred in conducting the assessment. . (b) Safety priority Section 47140a(b)(2) is amended by inserting , including a certification that no safety projects would be deferred by prioritizing a grant under this section, after an application . 1213. Recycling plans; safety projects at unclassified airports Section 47106(a) is amended— (1) in paragraph (5), by striking ; and and inserting a semicolon