[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: 49CFR236.103] [Page 509] 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 A--Rules and Instructions: All Systems Sec. 236.103 Switch circuit controller or point detector. Switch circuit controller, circuit controller, or point detector operated by hand-operated switch or by power-operated or mechanically- operated switch-and-lock movement shall be inspected and tested at least once every three months. [49 FR 3384, Jan. 26, 1984]