Codes and Signals

Listed below are commonly used public safety codes and signals.
Some have been gathered from commonly available lists, others by monitoring radio transmissions.
Use of codes and signals is prohibited during multiagency or multidiscipline responses per NIMS.  
 
If you have corrections or additions for any code below, please submit them to us. 
 
 
Common 10-codes
 
 
Code   Meaning  
10-0      
10-1   Weak Signal  
10-2   Strong Signal  
10-3   Stop Transmitting  
10-4   Acknowledge  
10-5   Relay  
10-6   Busy-Unless Urgent  
10-7   Out of service  
10-8   In service  
10-9   Repeat  
10-10   Fight In Progress  
10-11   Dog Case  
10-12   Stand By (Stop)  
10-13   Weather-Road Report  
10-14   Prowler Report  
10-15   Civil Disturbance  
10-16   Domestic Problem  
10-17   Meet Complainant  
10-18   Quickly  
10-19   Return to _____  
10-20   Location  
10-21   Call ( ) by Phone  
10-22   Disregard  
10-23   Arrived at Scene  
10-24   Assignment Completed  
10-25   Report in Person (Meet)  
10-26   Detaining Subject
 
10-27   Drivers License Info  
10-28   Vehicle Registration Info  
10-29   Check for Wanted  
10-30   Excess Radio Traffic  
10-31   Crime in Progress  
10-32   Man with Gun  
10-33   Emergency  
10-34   Riot  
10-35   Major Crime Alert  
10-36   Correct Time  
10-37   Suspicious Vehicle  
10-38   Stopping the Suspicious  
10-39   Urgent-Use Light / Siren  
10-40   Respond No Light / Siren  
10-41   Beginning Tour of Duty  
10-42   Ending Tour of Duty  
10-43   Information  
10-44   Permission to Leave ___  
10-45   Animal Carcass at ___  
10-46   Assist Motorist  
10-47   Emergent Road Repair  
10-48   Traffic Standard Repair  
10-49   Traffic Light Out at ___  
10-50   Accident(F, PI,PD)  
10-51   Wrecker Needed  
10-52   Ambulance Needed  
10-53   Road Blocked at ___  
10-54   Livestock on Highway  
10-55   Intoxicated Driver  
10-56   Intoxicated Pedestrian  
10-57   Hit and Run (F, PI, PD)  
10-58   Direct Traffic  
10-59   Convoy or Escort  
10-60   Squad in Vicinity  
10-61   Personnel in Area  
10-62   Reply to Message  
10-63   Prepare to Copy  
10-64   Msg for Local Delivery  
10-65   Net Message Assignment  
10-66   Message Cancellation  
10-67   Clear for Net Message  
10-68   Dispatch Information  
10-69   Message Received  
10-70   Fire Alarm  
10-71   Advise Nature of Fire  
10-72   Report Progress on Fire  
10-73   Smoke Report  
10-74   Negative  
10-75   In Contact with ___  
10-76   En Route ___  
10-77   ETA  
10-78   Need Assistance  
10-79   Notify Coroner  
10-80   Chase in Progress  
10-81   Breatherlizer Report  
10-82   Reserve Lodging  
10-83   Work School Crossing at:  
10-84   If Meeting __Advise ETA  
10-85   Delay due to ___  
10-86   Officer/Operator on Duty  
10-87   Pickup/Distribute Checks  
10-88   Present Telephone # of:  
10-89   Bomb Threat  
10-90   Bank Alarm at ___  
10-91   Pick Up Prisoner  
10-92   Improper Parking  
10-93   Blockade  
10-94   Drag Racing  
10-95   Subject in Custody  
10-96   Mental Subject  
10-97   Check (Test) Signal  
10-98   Prison / Jail Break  
10-99   Wanted / Stolen Indicated  


 
Fire / EMS Response Codes
 
 
EMS Responses (priority system)
Level Provider Response
Alpha BLS  Non-emergent
Bravo  BLS  Emergent 
Charlie  ALS  Non-emergent 
Delta  ALS  Emergent 
Echo   Expedite
 
  
Code 1  emergent response
Code 2  non-emergent response
Code 3  emergent response 
Code 4 situation secure
 Use of code 1 or 3 depends on jurisdiction
 
 
 
Staging Types  
 Level 1 - staged on scene
 Level 2 - staged away from scene
  
  
 
 
Illinois State Police
  
 
Response Codes
1 - Normal
2 - Expeditious
3 - Emergent 
 
 
Disposition Codes 
1 - DUI
2 - Speeding 
3 - Seat belt
4 - Following too closely 
5 - Improper lane usage
Assisted motorist
Assisted other agency
 
 
 
Patrol Status 
Patrol interstate
Patrol other
Patrol weather
Patrol 2nd division
Training probationary
Department lands (DNR)
Overweight vehicle
Supervisory patrol
Investigative duties
 
 
 
 Misc. Verbage
Incident initiation 
Incident update 
Contact secure 
Location update
Equipment maintenance
In transit / QIT
Personal time
Time earned
Watchdog (## mins) [D15]
Milepost ##

 

Unit Types 
Ocean - crash reconstruction
Frank - conservation
David Adam - OSFM
Lincoln - Aviation
Paul - ISP Airplane ops 
Mary - ISP Motorcycles
Henry - IDOT Helo

   

ISP Alert Tones
Alert 2468.2 / 2137.0
D11 ISPERN 1050.0
Weather 2440.0 / 1780.0
Situation 2440.0 / 2840.0