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  2. Police code - Wikipedia

    en.wikipedia.org/wiki/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 other status ...

  3. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [ 1 ] The codes, developed during 1937–1940 and expanded in 1974 by the Association of Public-Safety Communications Officials-International (APCO), allow brevity and standardization of message traffic.

  4. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    Code 1: A time critical event with response requiring lights and siren. This usually is a known and going fire or a rescue incident. Code 2: Unused within the Country Fire Authority. Code 3: Non-urgent event, such as a previously extinguished fire or community service cases (such as animal rescue or changing of smoke alarm batteries for the ...

  5. List of emergency telephone numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_emergency...

    Municipal police (where operating) – 986, Crisis Management Centre (focus depends on voivodeship) – 987, Electricity emergency – 991, Gas emergency – 992, Heat engineering emergency – 993, Water emergency – 994, Child alert (operated by Police) – 995, Counterterrorism emergency – 996, Missing children (EU hotline) – 116 000 ...

  6. 911 (emergency telephone number) - Wikipedia

    en.wikipedia.org/wiki/911_(emergency_telephone...

    The first use of a national emergency telephone number began in the United Kingdom in 1937 using the number 999, which continues to this day. [6] In the United States, the first 911 service was established by the Alabama Telephone Company and the first call was made in Haleyville, Alabama, in 1968 by Alabama Speaker of the House Rankin Fite and answered by U.S. Representative Tom Bevill.

  7. APCO radiotelephony spelling alphabet - Wikipedia

    en.wikipedia.org/wiki/APCO_radiotelephony...

    The APCO phonetic alphabet, a.k.a. LAPD radio alphabet, is the term for an old competing spelling alphabet to the ICAO radiotelephony alphabet, defined by the Association of Public-Safety Communications Officials-International [1] from 1941 to 1974, that is used by the Los Angeles Police Department (LAPD) and other local and state law enforcement agencies across the state of California and ...

  8. 311 (telephone number) - Wikipedia

    en.wikipedia.org/wiki/311_(telephone_number)

    While Baltimore was the first city to use 311 as a police non-emergency number, in January 1999, Chicago initiated the first comprehensive 3-1-1 system, by providing information and tracking city services from intake to resolution, in addition to taking non-emergency police calls. When the new service was launched, information regarding all ...

  9. Blue wall of silence - Wikipedia

    en.wikipedia.org/wiki/Blue_wall_of_silence

    The code is one example of police corruption and misconduct. Officers who engaged in discriminatory arrests, physical or verbal harassment, and selective enforcement of the law are considered to be corrupt, while officers who follow the code may participate in some of these acts during their careers for personal matters or in order to protect or support fellow officers. [5]