Ten-four good buddy, what's your twenty.....
Ten Codes
10 codes are codes used by law enforcement officers and dispatchers to quickly convey messages over police radio. Some have been adopted by CBers, truckers, and other users of radio as well. While some codes are fairly standardized, others can vary widely from one locality to another. This list contains some of the more common usages.
10-0 - use caution
10-1 - poor reception
10-2 - good reception
10-3 - stop transmitting
10-4 - message received, affirmative, ok, understood
10-5 - relay this information to ___
10-6 - busy
10-7 - out of service
10-8 - in service
10-9 - please repeat your message
10-10 - fight in progress, out of service
10-11 - animal problem
10-12 - standby
10-13 - advise weather/road conditions, civilians present and listening
10-14 - suspicious person or prowler
10-15 - civil disturbance
10-16 - domestic disturbance
10-17 - meet complainant
10-18 - urgent
10-19 - return to station
10-20 - specify location/my location is ___
10-21 - please telephone ___
10-22 - disregard
10-23 - arrived at location/on scene
10-24 - assignment completed
10-25 - report to ___
10-26 - detaining suspect (implying "please expedite")
10-27 - drivers license request
10-28 - vehicle registration request
10-29 - arrests/warrants request
10-30 - unauthorized use of radio
10-31 - crime in progress
10-32 - person with gun
10-33 - emergency, all units stand by
10-34 - riot
10-35 - major crime alert
10-36 - correct time of day?
10-37 - suspicious
10-38 - stopping suspicious vehicle
10-39 - run with lights & siren
10-40 - run silent (no lights & siren)
10-41 - begin duty
10-42 - end duty
10-43 - information
10-44 - permission to leave patrol
10-45 - animal carcass
10-46 - motorist assist
10-47 - emergency road repair
10-48 - traffic control
10-49 - traffic light out
10-50 - motor vehicle accident
10-50 J1 - mva non-injury
10-50 J2 - mva with injuries
10-50 J3 - mva with road blockage
10-50 J4 - mva with fatalities
10-51 - wrecker needed
10-52 - ambulance needed
10-53 - road blocked
10-54 - animals on highway
10-55 - intoxicated driver or DWI
10-56 - intoxicated pedestrian
10-57 - hit & run accident
10-58 - direct traffic
10-59 - escort or convoy
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 assignment
10-66 - net message cancellation
10-67 - clear for next message
10-68 - dispatch message
10-69 - message received
10-70 - fire alarm
10-74 - negative
10-76 - fresh coffee
10-78 - need assistance
10-79 - notify coroner
10-80 - pursuit in progress
10-81 - breathalyzer request
10-82 - reserve lodging
10-83 - work/school crossing detail
10-84 - advise ETA
10-85 - arrival delay due to ___
10-86 - officer on-duty
10-87 - pickup or prisoner transfer
10-88 - advise telephone
10-89 - bomb threat
10-90 - bank alarm
10-91 - pick up prisoner/suspect
10-92 - parking violation
10-93 - blockage
10-94 - drag racing
10-95 - prisoner/suspect in custody
10-96 - mental patient
10-97 - test signal
10-98 - prison/jail break
10-99 - warrants/stolen indicated
Other radio terminology
Over - I have finished talking and I am listening for your reply.
Out - I have finished talking to you and do not expect a reply
Roger - I understand what you just said
Wilco - I will do as you said (Will Comply)

J codes are used in various ways to indicate the severity, intensity, or classification of a situation.
    10-50 J1 - motor vehicle accident non-injury, J2 - mva with injuries, J3 - mva with road blockage, J4 - mva with fatalities
    J1 Personnel, J2 Property, J3 Prisoner

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