Why do truck drivers say 10 - 4 ? What does that mean?

4 Answers

  • 1 decade ago
    Favorite Answer

    It is 10 code for OK - and/or MESSAGE RECEIVED and/or AFFIRMATIVE (YES).

    Back in the '70s when CBs were regulated by the FCC, and required a license to operate one, the 10 code was used for brevity in conversations. As the FCC de-regulated the licensing of CB radios, more and more people started using them - including truckers (especially truckers!)

    The 10 code just stuck, and still is in use - although very limited - to date; probably because the "old timers" that were originally on from the beginning still used it, and newbies picked up on the "lingo" as they used the radio.

    It really boils down to "teaching an old dog new tricks", and a reluctance in human nature to change when something works.

    PS You can find a complete list of 10 code by yahoo search or bing or google.

    Source(s): Police Officer (we still use the 10 code) also a CBr for many years.
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  • 1 decade ago

    Hi. It really means "message recieved". truckers are not the only ones that use these codes. police, ambulance, fire, public safety, etc. use these codes, or a variation thereof.

    Source(s): 48+OTR driver
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  • Anonymous
    1 decade ago

    It means "ok" or "gotcha" or " roger" or "acknowledged" or "I see where you are coming from there, mister."

    It is one of many such codes they can use, to create the effect that they are talking about something really mysterious and important.


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  • 1 decade ago

    It means ok. I understand.

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