Rule N

The following abbreviations and acronyms as well as those authorized by special instructions may be used: ABS - Automatic Block Signal System ack - Acknowledgement ANS - Auto Normal Switch AWD - Automatic Warning Devices B/E CTC Sign - Begin/End CTC Sign B/E MT Sign - Begin/End Main Track Sign CL Sign - Cautionary Limit Sign cndr - Conductor com - Complete CTC - Centralized Traffic Control System DOB - Daily Operating Bulletin E - East ECM - Electronic Communications Method eng - Engine engr - Locomotive engineer exp - Express FIT - Field Information Terminal frmn - Foreman frt - Freight GBO - General Bulletin Order(s) HBD - Hot Box and Dragging Equipment Detector jct - Junction LCS - Local Control Switch MPH - Miles per hour MP - Mile Post N - North NA - Not Applicable NMT - Non-main Track no - Number OCS - Occupancy Control System psgr - Passenger rpt - Repeat RTC - Rail Traffic Controller SCS - Special Control System SCT - Siding Control Territory SNS - Station Name Sign S - South sdg - Siding SI - Special Instruction STK - Subdivision Track sub - Subdivision swt - Switch TGBO - Tabular General Bulletin Order TIBS - Train Information Braking System TOP - Track Occupancy Permit trk - Track trnm - Trainman TU - Track Unit W - West wk - Work xover - Crossover xing - Crossing RTC may use approved office abbreviations for station and subdivision names and for controlled points when entering addresses on computer generated forms. The normal abbreviations for days of the week and calendar months may be used.