[Code of Federal Regulations] [Title 49, Volume 4] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR222.1] [Page 278] TITLE 49--TRANSPORTATION CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 222_USE OF LOCOMOTIVE HORNS AT PUBLIC HIGHWAY-RAIL GRADE CROSSINGS--Table Subpart A_General Sec. 222.1 What is the purpose of this regulation? The purpose of this part is to provide for safety at public highway- rail grade crossings by requiring locomotive horn use at public highway- rail grade crossings except in quiet zones established and maintained in accordance with this part.