; or (B) provide to the applicant, in writing, a specific valid reason for withholding approval of the application. (2) Supplemental information If an applicant that receives written notice under paragraph (1)(B) submits to the Secretary information that satisfies the reason of the Secretary for withholding approval of the application, the Secretary shall approve the application not later than 5 days after the date of receipt of the information. (e) Guidance for new entrants (1) Issuance The Secretary shall— (A) issue written guidance to instruct new entrants seeking operating authority under this section to transport passengers on complying with the Federal Motor Carrier Safety Regulations; and (B) ensure that a new entrant that submits an application for such operating authority receives the guidance. (2) Criteria for safety audit The guidance issued under paragraph (1) shall serve as the criteria for conducting a safety audit of an approved new entrant motor carrier of passengers. (3) Registration fees The Secretary may not increase registration fees for new entrant applications described in paragraph (1) in excess of $350. . 3. FAST Act reform (a) Carrier safety fitness determinations (1) Notice of proposed rulemaking Before the date on which the Inspector General of the Department of Transportation makes the certification under section 5223(a) of the FAST Act ( 49 U.S.C. 31100 note