[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: 49CFR220.51]

[Page 245]
 
                        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. 220.51  Radio communications and signal indications.

    (a) No information may be given by radio to a train or engine crew 
about the position or aspect displayed by a fixed signal. However, a 
radio may be used by a train crew member to communicate information 
about the position or aspect displayed by a fixed signal to other 
members of the same crew.
    (b) Except as provided in the railroad's operating rules, radio 
communication shall not be used to convey instructions which would have 
the effect of overriding the indication of a fixed signal.