[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: 49CFR235.5]

[Page 481]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
 PART 235--INSTRUCTIONS GOVERNING APPLICATIONS FOR APPROVAL OF A DISCONTINUANCE OR MATERIAL MODIFICATION OF A SIGNAL SYSTEM OR RELIEF FROM THE REQUIREMENTS OF 
PART 236--Table of Contents
 
Sec. 235.5  Changes requiring filing of application.

    (a) Except as provided in Sec. 235.7, applications shall be filed to 
cover the following:
    (1) The discontinuance of a block signal system, interlocking, 
traffic control system, automatic train stop, train control, or cab 
signal system or other similar appliance or device;
    (2) The decrease of the limits of a block signal system, 
interlocking, traffic control system, automatic train stop, train 
control, or cab signal system; or
    (3) The modification of a block signal system, interlocking, traffic 
control system, automatic train stop, train control, or cab signal 
system.
    (b) [Reserved]

(Approved by the Office of Management and Budget under control number 
2130-0042)