49 C.F.R. § 236.15 Timetable instructions.
Title 49 - Transportation
Automatic block, traffic control, train stop, train control and cab signal territory shall be designated in timetable instructions.
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
§ 236.15 Timetable instructions.