Is 10/4 a police code?

Yes, police officers still say "10-4," meaning "acknowledged" or "okay," but many agencies are transitioning to "plain language" (plain speech) for clarity, so while it's widely understood and used, its frequency varies by department and situation, especially with some regional mandates pushing for plain talk.
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What is a 10/4 police code?

In police code, 10-4 (or X4) means "acknowledged," "understood," "okay," or "message received," serving as a quick confirmation that an officer has heard and understood instructions or information from dispatch or another officer, vital for clear, concise radio communication. It's a widely recognized "10 code" from systems designed for brevity, though many agencies now use plain language due to inconsistencies, notes. 
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What's the difference between 10-4 and 10 5?

10-4 Affirmative. 10-5 Relay to/from.
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Why do police say 10/4 instead of OK?

Meaning acknowledgment or okay, “10-4” comes from the 10 Codes list that emergency personnel use to communicate with each other, commonly done over the radio. Ten Codes are sets of numbers beginning with the number 10 and used — originally by police — as a form of shortened communication.
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What does 10/7 mean dead?

While 10-7 primarily means "Out of Service" (unavailable for calls) in police radio codes, it's often used euphemistically or in tribute for a deceased officer or person, signifying they are permanently "out of service," but some agencies use a different code like Signal 7 or 10-67 for a dead body. The meaning of 10-7 can vary by agency, but it commonly denotes an officer is off duty, on a break, or otherwise unavailable.
 
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What Does 10 4 Mean In Police Code? - CountyOffice.org

What does the 10/20 mean?

"10-20" or "What's your 20?" is a common radio code, especially in US law enforcement, meaning "What is your location?" or "Identify your position," used for quick, concise communication. While rooted in police 10-codes for brevity, it gained wider use through CB radio and movies, becoming a slang term for location in general conversation, says Wikipedia. 
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What is a 10 9 in police code?

10-8 In service/available for assignment. 10-9 Repeat last transmission. 10-10 Off duty. 10-10A Off duty at home. 10-11 Identify this frequency.
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Can I legally cuss out a cop?

No, cursing at a cop isn't automatically illegal due to First Amendment free speech, but it can become a crime if it crosses into "fighting words," threats, incitement, or physically obstructs their duties, potentially leading to charges like disorderly conduct, resisting arrest, or disturbing the peace, depending on state laws and the specific context. While you have the right to criticize officers, actions like making physical gestures or being disruptive can remove that protection, making it legally risky, though often not advisable. 
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Why do truckers say what's your 20?

But have you ever thought what it really means? The term has taken inspiration from CB radio slang, and it's just another way of saying “what's your location”? So, to all the truckers out there, what's your 20? #ontheroad #truckdrivers #drivers #legendsofroad #truckers #truckerlocation #whatsyour20.
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Why do people say 5 0 for cops?

“Five-o” referred to the Hawaiian police force in the show, based on Hawaii being the fiftieth state to join the union. Though inaccurate, as Hawaiian police officers in real life have no such designation, the nickname became popular among fans and is still used to refer to police across the country to this day.
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Why can't you listen to police radios anymore?

In 2020, Xavier Becerra, then California's attorney general, issued a memo to police departments telling them they needed to take steps to make sure that sensitive information drawn from law enforcement databases, as well as personal information about crime victims, suspects, and others, wasn't broadcast over police ...
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Is 10/4 still commonly used today?

Agencies have recognized that some codes will still be used during normal radio trans- missions, such as 10-4, which is recognized as “okay,” “copy” or “acknowledged.”
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Why do soldiers say copy?

In military radio communication, "copy" (or "good copy") means "I have received and understood your transmission," serving as confirmation you heard and comprehended the message, similar to "Roger," though sometimes distinguished to mean just received (Roger) versus understood and confirmed (Copy) or to add emphasis. It's a standard brevity code (proword) for clear, quick communication over radio, confirming message integrity and comprehension before any action is taken. 
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What does 10/4 mean in CB lingo?

In CB radio lingo, "10-4" means "message received," "understood," or "OK," serving as a quick, affirmative acknowledgment of a transmission, originating from police ten-codes but popularized by truckers for clear, brief communication on the airwaves. It's a core part of the efficiency-focused "ten-code" system that simplifies talking over the radio. 
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What does 42 mean trucker?

42. Yes, or OK. Four-Letter Word. Nobody wants to stop at the weigh station- that is why "OPEN" is considered a four-letter word in the trucking industry.
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What does "rubber ducky" mean in CB talk?

The phrase "10-4 rubber ducky" is a combination of two references: * 10-4: This is a common CB radio code meaning "acknowledged" or "understood." It was popularized by the song "Convoy" by C.W. McCall. * Rubber ducky: This is a term used in trucker slang to refer to a rookie driver.
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What does trucker mouth mean?

You put a group of men together for an extended period of time, and it's not hard to imagine the potential topics of conversation. In fact, Urban Dictionary even has a definition for “Trucker Mouth,” which is defined as “A person who uses foul language.”
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Can you tell a cop to shut up?

Yes, you generally can tell a police officer to "shut up" or verbally criticize them due to First Amendment free speech protections, but it's risky as officers can escalate charges like disorderly conduct or obstruction if they feel threatened or provoked, even if the speech isn't a true threat or incitement to violence, so staying calm and knowing your rights is crucial. 
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Can I legally flip off a cop?

Giving the finger is protected under your First Amendment right to freedom of speech, and you can't be arrested for it. If a police officer violates your rights after you give them the middle finger, you can file a lawsuit against the cop in question.
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What does 4 fingers up mean for cops?

The most common hand signal street cops will use between themselves is displaying four fingers (Code 4) which means they don't need any help.
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Does 10/7 mean dead?

Police officer retirement (North America)

The officer gives a 10-7 code (Out of service) and then a 10-42 code (ending tour of duty).
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