Most Used CB Codes in Trucking
You do not need to memorize 100+ codes to use the CB effectively. Most truckers use the same 15-20 codes and slang terms for 95% of their radio communication. This guide covers the most commonly used 10-codes and CB slang with real-world examples showing exactly how they sound in conversation.
Ahmad Qazi
Founder & CEO, O Trucking LLC
Fact-Checked by O Trucking Dispatch Team
5+ years communicating with owner-operators across CB radio and fleet systems
Written by Ahmad Qazi, founder of O Trucking LLC, drawing on 9+ years dispatching for owner-operators. Learn more about us.
O TruckingMost Used CB Codes in Trucking (2026)
Key Takeaways
- Most truckers rely on the same 8-12 core 10-codes plus a handful of slang terms for roughly 95% of CB communication.
- The everyday codes are 10-4 (understood), 10-20 (location), 10-9 (repeat), 10-7 (out of service), and 10-33 (emergency).
- Common slang fills the gaps: bear (police), hammer lane (left lane), chicken coop (weigh station), and gator (tire debris).
- Channel 19 is the unofficial trucker highway channel; Channel 9 is reserved for emergencies.
- For uncommon situations, plain English is often clearer than a rarely used code — mix codes and plain speech for zero miscommunication.
Top 20 CB Codes and Slang Every Trucker Needs
| # | Code/Term | Meaning | Real-World Example |
|---|---|---|---|
| 1 | 10-4 | Affirmative / Understood | “10-4, appreciate it, driver.” |
| 2 | 10-20 | Location | “What's your 10-20?” |
| 3 | 10-9 | Repeat last message | “10-9, lost you in the static.” |
| 4 | Bear / Smokey | Police officer | “Bear in the median at the 185.” |
| 5 | Breaker | Requesting to speak | “Breaker one-nine, anybody got a road report?” |
| 6 | Hammer Lane | Left lane (fast lane) | “Gator in the hammer lane.” |
| 7 | Granny Lane | Right lane (slow lane) | “Bear in the granny lane.” |
| 8 | Chicken Coop | Weigh station | “Coop is open at the 210.” |
| 9 | Alligator / Gator | Tire debris on road | “Big gator at mile marker 42.” |
| 10 | 10-7 | Out of service / Off duty | “Going 10-7, parking for the night.” |
| 11 | Hammer Down | Drive fast / Accelerate | “Road's clear, hammer down.” |
| 12 | Back It Down | Slow down | “Back it down, bear at the 150.” |
| 13 | 10-33 | Emergency | “10-33, jackknife at exit 80.” |
| 14 | Four-Wheeler | Passenger car | “Four-wheeler weaving lanes.” |
| 15 | Handle | CB radio nickname | “What's your handle, driver?” |
Master These 15 and You Are Set
Common CB Mistakes New Drivers Make
Most Used CB Codes FAQ
Common questions about CB codes, slang, and trucking radio communication
How many CB codes do truckers actually use?
Most truckers regularly use 8-12 codes from the full 10-code system. The core daily-use codes are 10-4 (affirmative), 10-9 (repeat), 10-20 (location), 10-7 (out of service), 10-8 (in service), 10-10 (standing by), and 10-33 (emergency). Beyond these, truckers add a handful of commonly used CB slang terms like 'bear' (police), 'hammer lane' (left lane), and 'chicken coop' (weigh station) to cover most highway communication needs.
Should I use 10-codes or plain language?
Use a mix. The core codes (10-4, 10-9, 10-20) are so universal that plain language alternatives actually sound more awkward on the CB. But for less common codes, plain language is better — saying 'What time is it?' is clearer than '10-36' for most drivers. The general rule: if the code is one of the top 10 most common, use it. For everything else, say what you mean in plain English.
What CB slang terms are used alongside 10-codes?
The most common CB slang terms used alongside 10-codes include: bear/smokey (police), hammer lane (left lane), granny lane (right lane), chicken coop (weigh station), alligator/gator (tire debris), hammer down (drive fast/accelerate), back it down (slow down), four-wheeler (car), and breaker (requesting to speak on the channel). See our road hazard slang dictionary for the complete list.
Do dispatchers use 10-codes?
Some dispatchers who communicate via CB or two-way radio use basic 10-codes, but most modern dispatching is done via phone, text, and fleet management systems where plain language is standard. At O Trucking, we use whatever communication method and language is clearest for the situation — the goal is zero miscommunication, whether that means 10-codes or plain English.
Are CB radios still used by truckers in 2026?
Yes. While many drivers rely on phones and apps for navigation and load updates, the CB radio is still widely used for real-time, line-of-sight communication other tools can't match — warning drivers about a crash, road debris, a slowdown, or a weigh station a few miles ahead. Channel 19 remains the unofficial trucker channel on most highways, which is why knowing the core 10-codes and slang still matters.
What channel do truckers use on the CB radio?
Channel 19 is the standard channel truckers use for highway communication across most of the U.S., and it's where you'll hear the codes and slang in this guide. Channel 9 is reserved for emergencies. If you're new, monitor 19 to pick up local road conditions, then jump in with a 'breaker one-nine' when you need to talk.
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