Emergency Transportation Operations

Appendix A. Radio Dispatch Codes from Select Law Enforcement and Emergency Response Agencies

A-1 Revised Official APCO Ten Signals
A-2 California Highway Patrol Radio Codes
A-3 Dallas PD Radio Signal Codes
A-4 F.D.N.Y. Radio Codes

A-1. Revised Official APCO Ten Signals
Signal Description Signal Description
10-1 Unable To Copy Re-Locate 10-47 Emerg. Road Repairs Needed
10-2 Signals Good 10-48 Traffic Standard Repair
10-3 Stop Transmitting 10-49 Traffic Light Out
10-4 Acknowledgement 10-50 Traffic Accident-F, PI, PD
10-5 Relay 10-51 Wrecker Needed
10-6 Busy Stand-By 10-52 Ambulance Needed
10-7 Out Of Service 10-53 Road Blocked
10-8 In Service 10-54 Livestock On Highway
10-9 Repeat 10-55 Intoxicated Driver
10-10 Fight In Progress 10-56 Intoxicated Person
10-11 Dog Case 10-57 Hit & Run--F, PI, Pd
10-12 Stand By (stop) 10-58 Direct Traffic
10-13 Weather & Road Report 10-59 Convoy Or Escort
10-14 Report Of Prowler 10-60 Squad In Vicinity
10-15 Civil Disturbance 10-61 Personnel In Area
10-16 Domestic Trouble 10-62 Reply To Message
10-17 Meet Complainant 10-63 Prepare To Make Written Cpy.
10-18 Complete Assgn. Quickly 10-64 Message For Local Del.
10-19 Return To --------- 10-65 Net Message Assgn.
10-20 Location 10-66 Message Cancellation
10-21 Call----By Telephone 10-67 Clear To Read Net Msg.
10-22 Disregard 10-68 Dispatch Information
10-23 Arrived At Scene 10-69 Message Received
10-24 Assignment Completed 10-70 Fire Alarm
10-25 Report In Person To---- 10-71 Advise Nature Of Fire (size, type, contents of bldg.)
10-26 Detaining Subject, Expid 10-72 Report Progress On Fire
10-27 Drivers License Info. 10-73 Smoke Report
10-28 Vehicle Registration 10-74 Negative
10-29 Check Records For Want 10-75 In Contact With
10-30 Illegal Use Of Radio 10-76 En Route
10-31 Crime In Progress 10-77 ETA
10-32 Man With Gun 10-78 Need Assistance
10-33 Emergency 10-79 Notify Coroner
10-34 Riot 10-82 Reserve Lodging
10-35 Major Crime Alert 10-84 If Meeting----Advise ETA
10-36 Correct Time 10-85 Will Be Late
10-37 Inves. Susp. Vehicle 10-87 Pick Up Checks For Dist.
10-38 Stopping Susp. Vehicle (give complete discript) 10-88 Advise Telephone # Of----
10-39 Urgent (light/siren) 10-90 Bank Alarm
10-40 Silent Run 10-91 Unnecessary Use Of Radio
10-41 Beginning Tour Of Duty 10-93 Blockade
10-42 Ending Tour Of Duty 10-94 Drag Racing
10-43 Information 10-96 Mental Subject
10-44 Request Permission To Leave Patrol---For--- 10-98 Prison/Jail Break
10-45 Animal Carcass In Road 10-99 Records Indicate Want/Stolen
10-46 Assist Motorist empty cell empty cell
A-2. California Highway Patrol Radio Codes
Radio Code Description
104 Message Received
106 Busy
1013 Advise Road Or Weather Conditions
1014 Provide Escort
1020 Location Requested
1021 Telephone _________
1022 Disregard
1023 Standby
1031 Attempted Suicide
1039 Message Or Item Delivered
1097 On Scene
1098 Assignment Completed
1110 Take A Report
1124 Abandoned Vehicle
1125 Traffic Hazard
1126 Disabled Vehicle
1141 Ambulance Required
1142 Paramedics Required
1144 Possible Fatality
1148 Provide Transportation
1166 Defective Traffic Signals
1179 Accident - Ambulance Responding
1180 Accident - Major Injury
1181 Accident - Minor Injury
1182 Accident - Property Damage
1184 Traffic Control
1185 Tow Truck Required Or Requested
1186 Bomb Threat
1187 Bomb Found
1198 Meet
A-3. Dallas PD Radio Signal Codes
Signal Description Signal Description
DH Drug House 34 Suicide
2 Witness 35 Emergency Blood Transfer*
3 Hang up call 36 Abandon Child
4 911 Hang up 37 Street Blockage
6 Disturbance 38 Meet Complainant
6G Random Gunfire 39 Racing, Speeding
6X Major Disturb. 41-40 Kidnapping in Progress
7X Major Accident 41 Felony
8 Drunk 42 Pursuit
9 Theft 44 Person in Danger*
11 Burglary 50 Eat
12 Burglar Alarm 51 Coffee
13 Prowler 52 City Court
14 Cutting* 53 County Court
15 ASSIST OFFICER* 54 Escort
16 Injured Person 55 Traffic Violation
18 Fire Alarm 56 Out to Station
19 Shooting* 57 Out to Garage
20 Robbery 58 Routine Investigation
21 Holdup Alarm 59 Follow-Up Investigation
22 Animal Complaint 60 Special Assignment
23 Parking Viol. 61 Foot Patrol
24 Abandonded Prop 62 Public Service
25 Criminal Assault 63 Cover Element
26 Missing Person 64 Radio Shop
27 Dead Person 65 Use Telephone
28 Sick Person 66 End Duty Tour
29 Open Building 67 Monitor Radio
30 Prisoner 41-20 Robbery in Progress*
31 Crim. Mischief 41-25 Criminal Assault in Progress*
32 Sus. Person 41-40 Kidnapping in Progress*
33 Poisoning empty cell empty cell
* Automatically dispatched as a Code 3 call

Communication Codes are as follows:

  • Code 1: Normal Response (no lights or sirens)
  • Code 3: Emergency Lights & Sirens
  • Code 4: Disregard
  • Code 5: En Route
  • Code 6: Arrived
  • Code 10: Known Offender
  • Code 10C: Known Dangerous Offender
  • Code 10W: Felony Warrant
  • Code 10X: Stolen Vehicle
A-4. F.D.N.Y. Radio Codes
Radio Code Description
10-1 Call Your Quarters or Other Unit
10-2 Return to Quarters
10-3 Call Dispatcher by Telephone
10-4 Acknowledgement
10-5 Repeat Message
10-6 Stand by
10-7 Verify Address/Location
10-8 In-Service by Radio
This signal is also used when the AT/SP is not in service and a unit is leaving quarters.
Code 1 - Used only by a Division or Battalion to indicate it is in-service by radio when leaving a quarters other than its own at which it had been off the air and to which alarms had been routed.
Code 2 - Used by any unit to indicate it is on the air outside its response area. When the unit returns to its response area, the dispatcher must be notified again using 10-8.
10-9 Off the Air
A unit will be out of radio contact. (State the reason: entering tunnel; visiting quarters; at a fire or emergency, etc.) A 10-8 is to be transmitted, with code if necessary, when contact is re-established.
10-10 Unit Location
A request is made for a unit's location. The unit is to acknowledge by giving its present location.
10-11 Radio Test Count
10-12 Preliminary Report
A request by a chief officer or dispatcher for a preliminary report by the first arriving unit. The dispatcher shall relay the report to the responding units.
10-13 Fire Marshall Needs Assistance
Urgent Assist by NYPD.
10-14 Roster Staffed Engine Company
Use by roster staffed Engine Companies when acknowledging a structural response.
10-18 Return All Units, Except 1 Engine and 1 Ladder
Transmitted for a fire or emergency, when in the judgment of the officer in command, conditions indicate that 1 Engine and 1 Ladder company are required. No further assistance is necessary. If the required unit(s) has not arrived, they will be notified by the dispatcher to continue responding to the location. Other responding units shall return to quarters or previous activity. The Battalion Chief need not continue to the scene after a 10-18 has been transmitted unless he deems it necessary. This decision must be based, in part, on the experience level of the officer transmitting the signal. Battalion Chiefs are to notify the dispatcher that they are 10-8 when not continuing in on a 10-18.
10-19 Return All Units, Except for 1 Engine or Ladder
Transmitted for a fire or emergency, when in the judgment of the officer is command, conditions indicate that 1 Engine or 1 Ladder Company is required. No further assistance is necessary. If the required unit(s) has not arrived they will be notified by the dispatcher to continue responding to the location. Other responding units shall return to quarters or other activity. The Battalion Chief need not continue to the scene after a 10-19 has been transmitted unless he deems in necessary. This decision must be based, in part, on the experience level of the officer transmitting the signal. Battalion Chiefs are to notify the dispatcher that they are 10-8 when not continuing in on a 10-19.
10-20 Proceed at Reduced Speed
No warning devices are to be used and all traffic regulations are to be observed.
10-21 Brush Fire
10-22 Outside Rubbish Fire
10-23 Abandon/Derelict Vehicle Fire (ADV)
A fire in a vehicle which has no value other than salvage and no owner can be located.
10-24 Auto Fire
A fire in a vehicle with plates or in any vehicle having a value greater than that of salvage.
10-25 Manhole or Transformer Vault Fire
Code 1 - Fire has extended from the manhole or conduit into a building.
Code 2 - Fire has blown one or more manhole covers, or smoke is issuing from a manhole under pressure.
Code 3 - Smoke is seeping from a manhole.
10-26 Food on Stove
10-27 Compactor Fire
Fire has not extended from compactor or shaft
10-28 Subway or Railroad System - Fire, Emergency or Smoke Condition (Code Required)
Code 1 - NYCTA.
Code 2 - Other than NYCTA.
10-31 Clogged Incinerator
Fire has not extended from shaft.
10-32 Defective Oil Burner
Fire has not extended from fire box.
10-33 Odor of Smoke
A smoke condition caused by a nearby working fire or fires such as barbecues, salamanders, etc.
10-34 Sprinkler System Emergency
Code 1 - Defective sprinkler device or system (defective alarm valve, broken pipe, etc.)
Code 2 - Unwarranted sprinkler alarm. Not defective (surge in pressure, people working on system, etc.)
Code 3 - Sprinkler has been activated by heat source not associated with an accidental fire.
10-35 Alarm System Emergency
Other than a sprinkler system.
Code 1 - Defective alarm device or system.
Code 2 - Unwarranted alarm. Not defective (accidentally activated by cigarette smoke; low battery, etc.)
Code 3 - Recorded alarm.
10-36 Automobile Emergency
Any type of automobile accident or washdown of a fuel spill.
Code 1 - Washdown
Code 2 - No injury or washdown
Code 3 - Injury
Code 4 - Extrication
10-37 Assist Civilian
First Aid or other call for assistance.
Code 1 - Victim deceased
Code 2 - Victim not breathing
Code 3 - Victim injured
10-38 Carbon Monoxide Response
Code 1 - Detector Activation - Defective, low battery, unwarranted.
Code 2 - Co Incident - Readings from 1 - 9 ppm.
Code 3 - Co Emergency - Readings over 9 ppm.
Code 4 - No detector activation during incident or emergency.
10-40 Gas or Electrical Emergency
Code 1 - Gas Emergency. (Gas main leak; gas leak in structure; effective gas appliance; etc.)
Code 2 - Electrical emergency. (Wires down; sparking fixture; short circuit; etc.)
Code 3 - Water condition.
Code 4 - Steam leak.
Note: Do not use 10-40 where the emergency causes a structural fire.
10-41 Suspicious Fire (Code Required)
Fire Marshall investigation is required.
Code 1 - Occupied Structure or Vehicle. A Structure (commercial, residential, public), or vehicle (car, bus or train) which is occupied at the time of the fire. This also includes a vacant apartment in an occupied building, or a store with a dwelling above.
Code 2 - Unoccupied Structure. A structure (commercial, residential, public) normally occupied which is unoccupied at the time of the fire.
Code 3 - Unoccupied Vehicle. A vehicle (car, bus or train) with or without plates which is unoccupied a the time of the fire.
Code 4 - Vacant Structure. A vacant building or building under construction or demolition. (If there are squatters or workmen in structure, transmit a Code 1.)
10-44 Public Ambulance
A request for a public ambulance. Specify the reason.
10-45 D.O.A. or Serious Injury
Transmitted immediately upon the discovery of a fatality or serious injury at a fire or emergency. This shall be followed as soon as possible with the appropriate Code and the number of victims.
Code 1 - Victim Deceased
Code 2 - Victim suffering serious injury. (Apparently life threatening)
Code 3 - Victim suffering serious injury. (Apparently not life threatening.)
Note: Do not transmit this signal for minor injuries.
10-47

Police Response
Police assistance is needed for crowd or traffic control, security, apprehension, etc. (specify reason)

10-48

Police Response for Harassment
Firefighters are being harassed an police assistance is needed immediately.

10-51

Cancellation of Outside Activities
Transmitted when outside activities are to be canceled. When the conditions that caused suspension of outside activities, the following message will be transmitted by radio, voice alarm and teleprinter: "All units shall resume outside activity forthwith."

10-60 Major Emergency Response
Transmitted for a collapse, airplane crash (except airport crash boxes 0037-LaGuardia Airport, and 0269-Kennedy Airport) train derailment, or similar emergency with the potential for multiple casualties. The following will respond. 3 Engines, 2 Ladders, 3 Rescue Companies (including Rescue with the Collapse Unit) 5 Battalion Chiefs, 1 Tactical Service Unit, HazMat, Field Communications Unit, Squad Company 1 with Technical Response Vehicle, 1 Deputy Chief, 1 Safety Battalion.
10-70 Water Relay Required
A notification that the first arriving engine has no positive water source and a water relay is required.
10-75 Notification of a Fire or Emergency
A notification signal transmitted when, in the judgment of the officer in command, conditions indicate a fire or emergency that requires a total response of the following units: 4 Engines, 2 Ladders, 2 Battalion Chiefs, 1 Rescue Company and Squad Company. Officers transmitting a 10-75 shall also state if it is for a fire or emergency and if a building is involved along with the type of building.
10-76 Notification of a Fire in a High-Rise Building
A notification signal transmitted when, in the judgment of the officer in command, conditions indicate a fire in a high-rise building that requires a total response of the following units: 5 engines (1 is CFR), 5 Ladders (1 is fast), 3 Battalion Chiefs, Engine 3 and High Rise Unit, 1 Deputy Chief, Field Communications Unit, 1 Rescue Company, Mask Service Unit, PIO, Command Post Company, 1 Squad company, 1 Tac unit. (restricted use of Citywide frequency, for operation of the High-Rise repeater.)
10-77

High-Rise Multiple Dwelling Fire
High-rise multiple dwelling fire (Response of 5 engines, 5 ladders, 3 battalion chiefs, 1 deputy, 1 rescue, 1 squad, the Special Operations battalion chief, a safety coordinator, transmitted by the Incident Commander after size up and the Safety Operating battalion chief.)

10-80 Hazardous Materials Incident
The Initial notification by field units of a hazardous materials incident. Responders are to proceed with caution to avoid entering a restricted area. Code will transmitted by the Incident Commander after size up and evaluations of the incident.
Code 1 - An incident confined to a small area and which does not pose an immediate threat to life or property. Can be controlled by a unit or units up to and including: 3 Engines, 2 Ladders, and 2 Battalion Chiefs.
Code 2 - An incident involving a greater hazard or larger area which posses a potential threat to life or property. Following units will respond: 3 Engines, 2 Ladders, 2 Battalion Chiefs, 1 Deputy Chief, HazMat Company 1, 1 Safety Battalion and Field Communications Unit.
10-84 Units Arrived at Scene
All units shall immediately transmit a 10-84 by Radio or MDT when arriving at the box of the incident. Other signals should not be given with the 10-84 except where the situation is apparent on arrival. This signal must be followed within 5 minutes by a preliminary report including the appropriate radio code signal or additional information by first arriving unit. Fire commanders and Chiefs within their command are to take necessary steps to insure that units are transmitting the 10-84 signal for responses. Chief officers shall transmit a 10-84 upon their arrival at an alarm.
10-85 Fire Marshall Requires Additional Units
Used for additional units (other than NYPD - See 10-13)
10-86 Foam Operation
Transmitted for a fire or emergency requiring any type of foam concentrate in addition to that carried by units on the scene. The following are to respond: 2 Foam Carriers, 1 Satellite Hose Wagon, 1 Foam Coordinator (Batt.Chief).
Code 1 - Maximum amount of Flouroprotein foam required. In addition to units on the 10-86 the remainder of the Foam Carriers and all Bulk Foam Units will respond.
Code 2 - Flouroprotein foam required. In addition to units on 10-86 the remainder of the Foam Carriers will respond.
Code 3 - High Expansion Foam required. The High Expansion Foam Unit will respond. Units on 10-86 will also respond.
Note: On all Special Calls for foam (Foam carrier or High Expansion Foam) the associated Engine Company will respond with both pieces of apparatus and all members.
10-91 Emergency; FD Not Required.
10-92 Malicious False Alarm
Indicates that a false alarm was transmitted with malicious intent.
10-99 Units Will Be Operating for at Least 30 Minutes
An operating unit or all units at an incident will be unavailable for at least 30 minutes. The unit(s) is to state the reason it will not be available.

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