; and (2) to expedite consideration of regulatory changes based on the results of the waiver. (b) Regulatory improvement waivers Notwithstanding any other provision of this subtitle, except subsection (i) and section 20130, the Secretary of Transportation may waive compliance with any part of a regulation prescribed or order issued under this subtitle if the waiver— (1) is in the public interest; (2) requires the recipient to adopt an alternative technology, practice, or system that could achieve a level of safety that is equivalent to, or greater than, the level of safety that would be obtained in the absence of the waiver; and (3) includes an evaluation framework described in subsection (c) that has been approved by the Secretary. (c) Evaluation framework An evaluation framework described in this subsection shall include— (1) a clear statement of the objective of the waiver; (2) a plan for assessing the effects of the waiver, including metrics to best gauge the effects on safety; and (3) a plan for gathering the data generated by the assessment described in paragraph (2). (d) Petitions (1) In general Not later than 60 days after the date on which the Secretary receives a petition for approval of a waiver under this section, the Secretary shall notify the petitioner in writing whether the petition— (A) is complete or incomplete, including, if incomplete, each reason the petition is incomplete; and (B) is unusually complex or not unusually complex. (2) Corrections The Secretary shall provide each petitioner with a reasonable opportunity— (A) (i) to address each reason that the petition is incomplete; or (ii) to explain why the petition is not unusually complex