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Baltimore County (MD) 10/Signal Codes


Unit IDs

  • The IDs are an officers precinct or division.
  • PCT#xx = Precinct Number - ID
  • 15xx = Tactical (including K9, Marine, SWAT/HNT)
  • VCxx = Violent Crimes units.
  • 19xx = Mobile Crisis units.
  • 20xx = Crime Lab.
  • Airx - Baltimore County Aviation Unit. (AIR 1,AIR 2,AIR 3,)

10 Codes

Bold means commonly used.

  • 10-0 Use caution
  • 10-1 Signal weak
  • 10-2 Signal good
  • 10-3 Stop transmitting
  • 10-4 Message received
  • 10-5 Relay
  • 10-6 Busy
  • 10-7 Out of service
  • 10-8 In service
  • 10-9 Repeat
  • 10-10 Fight in progress
  • 10-11 Animal problem
  • 10-12 Stand by
  • 10-13 Report conditions
  • 10-14 Prowler report
  • 10-15 Civil disturbance
  • 10-16 Domestic problem
  • 10-17 Meet complainant
  • 10-18 Urgent
  • 10-19 Go to station
  • 10-20 Advise your location
  • 10-21 Telephone _________
  • 10-22 Disregard
  • 10-23 Arrived at scene
  • 10-24 Assignment complete
  • 10-25 Report to __________
  • 10-26 Detaining suspect
  • 10-27 Driver's license information
  • 10-28 Vehicle registration information
  • 10-29 Check records
  • 10-30 Unauthorized use of radio
  • 10-31 Crime in progress
  • 10-32 Person with a gun
  • 10-33 Emergency-all units stand by
  • 10-34 Riot
  • 10-35 Major crime alert
  • 10-36 Correct time
  • 10-37 Suspicious vehicle
  • 10-38 Stop suspicious vehicle
  • 10-39 Respond using lights and siren
  • 10-40 Do not use lights or siren
  • 10-41 Beginning shift
  • 10-42 End shift
  • 10-43 Information
  • 10-44 Permission to leave
  • 10-45 Dead animal
  • 10-46 Assist motorist
  • 10-47 Emergency road repair
  • 10-48 Traffic control
  • 10-49 Traffic signal out
  • 10-50 Traffic accident/collision
  • 10-51 Request tow truck
  • 10-52 Request ambulance
  • 10-53 Roadway blocked
  • 10-54 Livestock on roadway
  • 10-55 Intoxicated driver
  • 10-56 Intoxicated pedestrian
  • 10-57 Hit & Run accident
  • 10-58 Direct traffic
  • 10-59 Escort
  • 10-60 Squad in vicinity
  • 10-61 Personnel in vicinity
  • 10-62 Reply to message
  • 10-63 Prepare to copy
  • 10-64 Local message
  • 10-65 Net message
  • 10-66 Cancel message
  • 10-67 Clear for net message
  • 10-68 Dispatch information
  • 10-69 Message received
  • 10-70 Fire alarm
  • 10-71 Advise nature of alarm
  • 10-72 Report progress of alarm
  • 10-73 Smoke report
  • 10-74 Negative
  • 10-75 In contact with _______
  • 10-76 En route to ________
  • 10-77 Estimated time of arrival
  • 10-78 Request assistance
  • 10-79 Notify coroner
  • 10-80 Pursuit in progress
  • 10-81 Breathalyzer report
  • 10-82 Reserve lodgings

* 10-83 School crossing assignment

  • 10-84 Estimated time of arrival
  • 10-85 Arrival delayed
  • 10-86 Operator on duty
  • 10-87 Pick up
  • 10-88 Advise telephone number
  • 10-89 Bomb threat
  • 10-90 Bank alarm
  • 10-91 Pick up subject
  • 10-92 Illegally parked vehicle
  • 10-93 Blockage
  • 10-94 Drag racing
  • 10-95 Subject in custody
  • 10-96 Mentally ill subject
  • 10-97 Test signal
  • 10-98 Prisoner escape
  • 10-99 Wanted or stolen

Signal Codes

  • Signal 13 - Officer Needs Assistance
  • Signal 76 - Fireworks Complaint (not used very often)




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