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  2. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by law enforcement and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code.

  3. 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 ...

  4. Police - Wikipedia

    en.wikipedia.org/wiki/Police

    Etymology. First attested in English in the early 15th century, originally in a range of senses encompassing '(public) policy; state; public order', the word police comes from Middle French police ('public order, administration, government'), in turn from Latin politia, which is the romanization of the Ancient Greek πολιτεία (politeia) 'citizenship, administration, civil polity'.

  5. Emergency service response codes - Wikipedia

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

    This code is rarely used for initial responders, but is given to further appliances if the incident doesn't require immediate assistance. This is also the only code that the State Emergency Services are authorised to respond with. See also. Medical Priority Dispatch System; Police code; Ten-code; References

  6. Blue wall of silence - Wikipedia

    en.wikipedia.org/wiki/Blue_wall_of_silence

    The blue wall of silence, also blue code and blue shield, 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.

  7. APCO radiotelephony spelling alphabet - Wikipedia

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

    APCO 's Project 14 updated the definition of Ten-codes, and also adopted the international radiotelephony spelling alphabet for use by law enforcement nationwide. [8]

  8. Law enforcement in the United States - Wikipedia

    en.wikipedia.org/wiki/Law_enforcement_in_the...

    As of 2020, more than 800,000 sworn law enforcement officers have been serving in the United States. About 137,000 of those officers work for federal law enforcement agencies. [1] Law enforcement operates primarily through governmental police agencies. There are 17,985 police agencies in the United States which include local police departments ...

  9. Special police - Wikipedia

    en.wikipedia.org/wiki/Special_police

    A special constable, in most cases, is not a member of a special police force (SPF); in countries in the Commonwealth of Nations and often elsewhere, a special constable is a voluntary or part-time member of a national or local police force or a person involved in law enforcement who is not a police officer but has some of the powers of a ...

  10. Philadelphia Police Department - Wikipedia

    en.wikipedia.org/wiki/Philadelphia_Police_Department

    The Philadelphia Police Department ( PPD, Philly PD, or Philly Police) is the police agency responsible for law enforcement and investigations within the County and City of Philadelphia, Pennsylvania. The PPD is one of the oldest municipal police agencies, [4] fourth-largest police force [5] and sixth-largest non-federal law enforcement agency ...

  11. New York City Police Department - Wikipedia

    en.wikipedia.org/wiki/New_York_City_Police...

    The New York City Police Department ( NYPD ), officially the City of New York Police Department, is the primary law enforcement agency within New York City. Established on May 23, 1845, the NYPD is the largest, and one of the oldest, municipal police departments in the United States. [7]