What 392.80(a) means in plain language
FMCSR 392.80(a) prohibits the use of a hand-held mobile telephone while operating a commercial motor vehicle. This means you cannot hold a phone to your ear, text, dial, or manually interact with a device while the vehicle is in motion. The regulation exists because taking your hands or attention off the road—even briefly—significantly increases crash risk.
The key word is "hand-held." Hands-free devices, voice commands, and phones mounted on dashboards or windshields are generally permitted, though state laws and company policies may be more restrictive. The citation applies specifically to drivers of CMVs, which includes tractor-trailers, box trucks, and other commercial vehicles requiring a CDL or used to transport hazardous materials.
What our enforcement data actually shows
Across our 13 million+ inspection records, 392.80(a) citations are uncommon. All-time, we see 1,455 citations for hand-held phone use. In the last 12 months, we recorded 0 citations for this code, and in the last 90 days, we also recorded 0 citations. This code ranks #619 out of 3,036 FMCSR violations by overall citation volume.
Importantly, none of the 1,455 all-time citations resulted in an out-of-service order—the OOS rate is 0.0%. This contrasts sharply with the all-FMCSR average OOS rate of 31.4%. In practice, officers cite this violation but do not immediately ground vehicles or drivers. The violation is recorded on your inspection record and may accumulate as a safety concern over time, but it does not typically trigger immediate commercial consequences during the roadside stop itself.
Who gets cited most
Our inspection data does not include a state-by-state breakdown for this code, so we cannot name the top three citing jurisdictions. However, we can identify the carriers with the most citations in our database. United Parcel Service Inc (USDOT 21800) leads with 10 citations, followed by Swift Transportation Co of Arizona LLC (USDOT 54283) with 7 citations. Federal Express Corporation (USDOT 86876), Schneider National Carriers Inc (USDOT 264184), and Werner Enterprises Inc (USDOT 53467) each have 4 citations. These numbers reflect the scale and exposure of large carriers across millions of miles; they do not indicate systemic negligence.
Among vehicle makes, Freightliners (FRHT) account for 271 of the 1,455 citations, followed by Volvo (VOLV) with 123 citations and Utility (UTIL) vehicles with 122 citations. This distribution mirrors the overall population of commercial trucks on the road.
How severe is this compared to similar codes
392.80(a) sits in the Unsafe Driving category. Our data shows starkly different enforcement patterns among related violations. Operating a CMV while ill or fatigued (392.2) generates far higher citation volume—1,208,164 all-time citations—yet maintains a similar OOS rate of 0.8%. Other variants of the fatigued-driver code (392.2-SLLSR, 392.2RG, 392.2-SLLTCD) also show much higher citation frequency, with some running 50,000+ citations each.
What distinguishes 392.80(a) is not severity but rarity in enforcement. The CSA Severity Weight for this code is 7, placing it in the moderate range. However, the low citation count and zero OOS rate suggest that roadside officers issue this citation infrequently compared to driver-condition violations, and prosecutors or enforcement agencies do not escalate it to an out-of-service action.
How to avoid it
Before you start driving:
- Mount your phone in a dashboard or windshield holder before the engine starts. Position it so you can glance at maps or incoming calls without reaching.
- Enable Do Not Disturb or airplane mode for the duration of your shift if the dispatch system allows it.
- Program common numbers into your phone's contacts and voice-command system before departing.
- Brief yourself on your route using GPS before you move.
While driving:
- Do not answer your phone by hand or hold it to your ear. If it rings, wait until you can safely pull over, or let it go to voicemail.
- If you must communicate, use voice-to-text, voice commands, or Bluetooth to keep both hands on the wheel and eyes on the road.
- Remember that many shippers, dispatchers, and law enforcement understand that a commercial driver cannot take calls while moving—a callback within 10 minutes is expected and accepted.
- Understand your carrier's phone policy; many prohibit hand-held use even when state or federal law does not strictly require it.
If you are cited:
- Acknowledge the citation professionally and ask the officer to clarify whether you were actively holding the phone or simply had it on the seat beside you.
- Do not argue the stop at the roadside; request a hearing if you believe the citation is incorrect.
- Request a copy of the inspection report and the officer's notes.
- If your carrier has a safety manager or legal contact, report the citation promptly so it does not compound into a CSA Serious Violation finding later.
Hand-held phone use is one of the easiest violations to prevent because the solution is simply preparation and discipline. You have legal, hands-free options; using them costs nothing and protects both your safety and your record.