[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR220.29]

[Page 243]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 220--RAILROAD COMMUNICATIONS--Table of Contents
 
         Subpart B--Radio and Wireless Communication Procedures
 
Sec. 220.29  Statement of letters and numbers in radio communications.

    (a) If necessary for clarity, a phonetic alphabet shall be used to 
pronounce any letter used as an initial, except initial letters of 
railroads. See appendix A of this part for the recommended phonetic 
alphabet.
    (b) A word which needs to be spelled for clarity, such as a station 
name, shall first be pronounced, and then spelled. If necessary, the 
word shall be spelled again, using a phonetic alphabet.
    (c) Numbers shall be spoken by digit, except that exact multiples of 
hundreds and thousands may be stated as such. A decimal point shall be 
indicated by the words ``decimal,'' ``dot,'' or ``point.'' (See appendix 
B to this part, for a recommended guide to the pronunciation of 
numbers.)