557.6—Determination whether to hold a public hearing.
(b)
If, after considering the above factors, the Administrator determines that a hearing should be held, the petition is granted. If it is determined that a hearing should not be held, the petition is denied. In either case, the petitioner is notified of the grant or denial not more than 60 days after receipt of the petition by the NHTSA.
(c)
If a petition submitted under this part is denied, a Federal Register notice of the denial is issued within 45 days of the denial, setting forth the reasons for it.