[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: 49CFR236.378]

[Page 501]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
 PART 236--RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND 
APPLIANCES--Table of Contents
 
                         Subpart C--Interlocking
 
Sec. 236.378  Time locking.

    Time locking shall be tested when placed in service and thereafter 
when modified, disarranged, or at least once every two years, whichever 
shall occur first.

[49 FR 3385, Jan. 26, 1984]