[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR234.237]

[Page 491]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 234--GRADE CROSSING SIGNAL SYSTEM SAFETY--Table of Contents
 
             Subpart D--Maintenance, Inspection, and Testing
 
Sec. 234.237  Reverse switch cut-out circuit.

    A switch, when equipped with a switch circuit controller connected 
to the point and interconnected with warning system circuitry, shall be 
maintained so that the warning system can only be cut out when the 
switch point is within one-half inch of full reverse position.