[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: 49CFR236.6]

[Page 639]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 236_RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, 
 
              Subpart A_Rules and Instructions: All Systems
 
Sec.  236.6  Hand-operated switch equipped with switch circuit controller.

    Hand-operated switch equipped with switch circuit controller 
connected to the point, or with facing-point lock and circuit 
controller, shall be so maintained that when point is open one-fourth 
inch or more on facing-point switch and three-eights inch or more on 
trailing-point switch, track or control circuits will be opened or 
shunted or both, and if equipped with facing-point lock with circuit 
controller, switch cannot be locked. On such hand-operated switch, 
switch circuit controllers, facing-point locks, switch-and-lock 
movements, and their connections shall be securely fastened in place, 
and contacts maintained with an opening of not less than one-sixteenth 
inch when open.