; and (B) providing for an independent pass/fail determination. (2) Establish a process to enhance the independence of crash test labs by ensuring that those labs have a clear separation between device development and testing in cases in which lab employees test devices that were developed within the parent organization of the employee. (b) Continued issuance of eligibility letters Until the implementation of the recommendations described in subsection (a) is complete, the Secretary shall ensure that the Administrator of the Federal Highway Administration continues to issue Federal-aid reimbursement eligibility letters as a service to States. 1522. Permeable pavements study (a) In general Not later than 1 year after the date of enactment of this Act, the Secretary shall carry out a study— (1) to gather existing information on the effects of permeable pavements on flood control in different contexts, including in urban areas, and over the lifetime of the permeable pavement; (2) to perform research to fill gaps in the existing information gathered under paragraph (1); and (3) to develop— (A) models for the performance of permeable pavements in flood control; and (B) best practices for designing permeable pavement to meet flood control requirements. (b) Data survey In carrying out the study under subsection (a), the Secretary shall develop— (1) a summary, based on available literature and models, of localized flood control capabilities of permeable pavement that considers long-term performance and cost information