[Code of Federal Regulations] [Title 49, Volume 6] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR555.14] [Page 161] TITLE 49--TRANSPORTATION CHAPTER V--NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 555_TEMPORARY EXEMPTION FROM MOTOR VEHICLE SAFETY AND BUMPER STANDARDS--Table of Contents Subpart B_Vehicles Built in Two or More Stages and Altered Vehicles Sec. 555.14 Processing of petitions. The Administrator shall notify the petitioner whether the petition is complete within 30 days of receipt. The Administrator shall attempt to approve or deny any complete petition submitted under this subpart within 120 days after the agency acknowledges that the application is complete. Upon good cause shown, the Administrator may review a petition on an expedited basis.