The ten-code or ten signals are a shorthand form of communications developed for common phrases used by Law Enforcement Officers and Civilian Radio operators. The whole code is below with corresponding phrases:
10-0 Caution
10-1 Unable to copy -- change location
10-2 Signal good
10-3 Stop transmitting
10-4 Acknowledgement (OK)
10-5 Relay
10-6 Busy -- stand by 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 disturbance
10-17 Meet complainant
10-18 Quickly
10-19 Return to ...
10-20 Location
10-21 Call ... by telephone
10-22 Disregard
10-23 Arrived at scene
10-24 Assignment completed
10-25 Report in person (meet) ...
10-26 Detaining subject, expedite
10-27 Drivers license information
10-28 Vehicle registration information
10-29 Check for wanted
10-30 Unnecessary use of radio
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 (Investigate) suspicious vehicle
10-38 Stopping suspicious vehicle
10-39 Urgent -- use light, siren
10-40 Silent run -- no light, siren
10-41 Beginning tour of duty
10-42 Ending tour of duty
10-43 Information
10-44 Permission to leave ... for ...
10-45 Animal carcass at ...
10-46 Assist motorist
10-47 Emergency road repairs at ...
10-48 Traffic standard repair at ...
10-49 Traffic light out at ...
10-50 Accident (fatal, personal injury, property damage)
10-51 Wrecker needed
10-52 Ambulance needed
10-53 Road blocked at ...
10-54 Livestock on highway
10-55 Suspected DUI
10-56 Intoxicated pedestrian
10-57 Hit and run (fatal, personal injury, property damage)