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Police code. A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes, or ...
Ten-code. Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code.[ 1]
Radiotelephony procedure (also on-air protocol and voice procedure) includes various techniques used to clarify, simplify and standardize spoken communications over two-way radios, in use by the armed forces, in civil aviation, police and fire dispatching systems, citizens' band radio (CB), and amateur radio . Voice procedure communications are ...
In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens. Alternatively, sirens may be used if necessary ...
IC codes (identity code) or 6+1 codes are codes used by the British police in radio communications and crime recording systems to describe the apparent ethnicity of a suspect or victim. [1] Originating in the late 1970s, the codes are based on a police officer's visual assessment of an individual's ethnicity, as opposed to that individual's ...
The blue wall of silence, [ 1] also blue code[ 2] and blue shield, [ 3] are terms used to denote the informal code of silence among police officers in the United States not to report on a colleague 's errors, misconducts, or crimes, especially as related to police brutality in the United States. [ 4] If questioned about an incident of alleged ...
911, sometimes written 9-1-1, is an emergency telephone number for Argentina, Canada, the Dominican Republic, Jordan, Iraq (in September 2024), Mexico, Pakistan, Palau, Panama, the Philippines, Sint Maarten, the United States, [ 2] and Uruguay, as well as the North American Numbering Plan (NANP), one of eight N11 codes.
Policing, politics. Types. Computer, radio, paper. An all-points bulletin ( APB) is an electronic information broadcast sent from one sender to a group of recipients, to rapidly communicate an important message. [ 1] The technology used to send this broadcast has varied throughout time, and includes teletype, radio, computerized bulletin board ...