Subway FAQ: Radio Codes
From nycsubway.org
N.Y.C.T.A. RADIO CODE SIGNAL SYSTEM R.T. TRAINS. DEPT.
12 - 1 EMERGENCY - CLEAR THE AIR
12 - 2 FIRE OR SMOKE (ON TRAIN - ROADBED)
12 - 3 FLOOD OR SERIOUS WATER CONDITION
12 - 5 STALLED TRAIN (POWER - TRAIN)
12 - 6 DERAILMENT
12 - 7 REQUEST FOR ASSISTANCE (POLICE - AMBULANCE)
12 - 8 ARMED PASSENGER (TRAIN - ROADBED)
12 - 9 PASSENGER UNDER TRAIN
12 - 10 UNAUTHORIZED PERSONEL ON TRACK - CATWALK
12 - 11 SERIOUS VANDALISM
12 - 12 DISORDERLY PASSENGERS
SAMPLE PROCEDURE: "COMMAND CENTER 12-1" (PAUSE) "COMMAND CENTER THIS IS PELHAM 4:26 AT 125TH STREET REPORTING A 12 - 2 ON TRAIN ETC."