Title 49: Transportation
PART 236—RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES
Subpart A—Rules and Instructions: All Systems
General
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§ 236.3 Locking of signal apparatus housings.
Signal apparatus housings shall be secured against unauthorized entry.
[49 FR 3382, Jan. 26, 1984]