In addition to law enforcement, ten-codes are frequently used on Citizens' Band (CB) radio. One of the most frequently used ten-codes, 10-4, has become popular enough to sometimes be …

Police Code 10-4 ... What does police code 10-4 mean? Police code 10-4 means Affirmative / Understood / Message received.

Basic Police Radio Codes The following codes may be used by law enforcement officers to communicate effectively over voice radio systems.

A list of police codes used on police radios and scanners. These codes are used by police to communicate more effectively over their radios.

Emergency Response Codes These codes may be used by police officers and other emergency response personnel to communicate more effectively during emergencies.

Eleven-codes compose a system of numeric code words devised by the California Highway Patrol to describe dispatches or situations frequent to the work of the Patrol.

Other Police Scanner Codes These miscellaneous codes may be used by various police departments to communicate more easily over the radio or in documentation.

Police Radio Code 4 ... What does police radio Code 4 mean? Police radio Code 4 means No further assistance required.

Police Radio Code 10 ... What does police radio Code 10 mean? Police radio Code 10 means Bomb threat / Patrol your district and report extent of damage.

Police Code 10-100 ... What does police code 10-100 mean? Police code 10-100 means Misdemeanor warrant / Out using restroom.