Nobody wakes up planning to run a false log. The violations that fill inspection reports are duller than that, and much more human. A trailer number that never got typed in. A 30-minute break taken at eight hours and eleven minutes of driving instead of eight hours flat. A yard move recorded by the ELD while nobody was logged in, sitting unassigned for six weeks because the person who was supposed to clear it left in March.
The common hours of service violations are, overwhelmingly, administrative. Which is oddly good news, because administrative problems have procedural fixes, and a driver who spends ten disciplined minutes at the end of each shift will avoid most of the list below without ever changing how they drive.
What follows is the shape of what actually gets written at roadside and found in audits, why each one happens, and what heads it off. I have deliberately not put dollar figures or scoring weights on anything. Those change, they vary by jurisdiction and enforcement posture, and a stale number in an article is worse than no number.
Everything here refers to 49 CFR Part 395 and related sections for property-carrying operations in the United States. Rules get amended, carriers set stricter internal policy, and enforcement practice differs from state to state. Verify against current FMCSA material and your own safety department before you act on any of it.
The short answer
The findings that recur most across inspections are: no record of duty status or an incomplete one, form and manner errors on the log, driving beyond the 11-hour driving limit or the 14-hour window, driving after reaching the 60-hour or 70-hour cycle limit, missing ELD documentation in the cab, missing or late supporting documents, and unassigned driving time left unresolved on the carrier’s ELD account.
Most of these come from three habits rather than from intent. Filling in the record after the fact instead of during the day. Treating the ELD as the compliance system rather than as a recorder. And never reconciling the fleet’s unassigned time. Fix those three and the majority of the list stops happening, which is a stronger claim than I would normally make but one I think holds.
The findings that actually get written
Missing or incomplete records of duty status
This is the headline finding and it covers more ground than people expect. A driver with no ELD and no exemption. A driver with an ELD that has been in malfunction for a week with no paper backup. A driver who cannot produce the previous seven days on request. A driver operating under the 150 air-mile short-haul exception whose carrier has not kept the time records that the exception depends on.
The underlying failure is nearly always the same: the driver believes the ELD is handling it, and nobody has checked whether it is.
Form and manner
Form and manner is the quiet one. The regulation lists information that has to appear on a record of duty status, and on an ELD most of it is supposed to populate automatically from the device profile. When it does not, you get a technically complete log that is legally deficient.
The usual suspects are a blank or wrong trailer number, no shipping document or trip number, the previous day left uncertified, edits with no annotation, and the carrier’s name or main office address wrong in the device setup. None of these affect safety in any real sense. All of them get written.
Driving beyond 11 or beyond 14
These are different violations and drivers conflate them constantly. The 11 is a driving-time limit. The 14 is a window that runs on wall-clock time from when you came on duty and does not pause for fuel, lunch, dock waits or a nap in the bunk that falls short of a qualifying split.
The pattern that produces the 14-hour violation is almost always a long unplanned stop mid-shift followed by a driver who is still thinking in terms of driving hours remaining. You can have three hours of drive time left and 40 minutes of window, and the window wins.
Driving after 60 or 70
Cycle violations are less frequent at roadside than the daily ones, largely because they take a full week of drift to produce, but they are ugly when they land. They are also entirely preventable, because the cycle is the one clock you can calculate days ahead. If you are not running your recap forward, you are guessing. The HOS Recap Calculator does the rolling arithmetic, and the 34-Hour Restart Calculator tells you what a restart actually buys you before you commit 34 hours of your life to it.
The 30-minute break, taken late
The break is due before you exceed 8 cumulative hours of driving time. Not on-duty time. Driving time. Older articles that say otherwise are describing a superseded version of the rule, and there is a whole guide to the 30-minute break rule worth reading if you have ever argued about this in a truck stop.
The violation pattern is a driver who is at 7 hours 50 minutes of driving, sees a rest area 12 miles ahead, and decides to make it. Twelve miles is eleven minutes. Eleven minutes is a violation. A countdown timer set at seven hours of driving costs nothing and removes the judgement call entirely.
False log
The regulation prohibits false reports in connection with duty status, and this is the one finding that changes the tone of an inspection entirely. Most drivers who end up here did not set out to falsify anything. They edited a record without annotating it, or logged off duty while waiting at a shipper because dispatch said to, or ran personal conveyance for a movement that advanced the load.
That last one is worth its own reading. Personal conveyance is legitimate and useful, and it is also the single easiest way to convert a driver acting in good faith into a false log finding, which the personal conveyance guide covers in detail.
Violation, cause, prevention
| Finding | What usually causes it | What prevents it |
|---|---|---|
| No record of duty status | ELD malfunction with no paper backup; short-haul exception used without carrier time records | Keep 8 days of blank graph-grids in the cab; confirm carrier is recording report and release times |
| Form and manner | Blank trailer number, missing shipping document reference, uncertified prior day | 60-second end-of-day check of the header fields; certify daily, not weekly |
| Driving beyond 11 hours | Miscounting driving time across a split or a long duty day | Read the drive clock, not the odometer, at every stop |
| Driving beyond the 14th hour | Long unplanned stop mid-shift; thinking in drive hours not window hours | Write the window end time on paper at the start of the shift |
| Driving after 60 or 70 | No forward recap; assuming the ELD will warn in time | Calculate the cycle days ahead, before the week starts |
| 30-minute break late | Pushing to a preferred stop past 8 cumulative driving hours | Set an alert at 7 hours 15 minutes of driving |
| Missing ELD documentation | Manual and instruction sheets never placed in the cab | Laminated packet in every truck; check on pre-trip |
| Missing supporting documents | Receipts kept in a jacket pocket, submitted late | Photograph and submit the same day |
| Unassigned driving time | Yard moves and shop movements with nobody logged in | Weekly reconciliation; log in for every movement |
| Unannotated edits | Correcting a genuine mistake without explaining it | Every edit gets a sentence, no exceptions |
| Personal conveyance misuse | Movement that advances the load logged on line 1 | Annotate purpose and destination every time |
Unassigned driving time is the fleet’s quiet problem
This one belongs to safety managers more than drivers, and it is the finding I would put money on being under-managed at most small fleets.
An ELD records movement whether or not somebody is logged in. A mechanic backing a tractor into a bay, a yard hostler shuffling trailers, a driver who forgot to log in for the first eight minutes of the shift: all of it lands in the unidentified driver profile. The carrier has to review those records and either assign them to the driver they belong to, who then confirms them, or annotate why the movement does not belong to any driver.
Say Devon runs 12 flatbeds out of a single yard. Over one month the system flags 41 unassigned segments totalling 6 hours 20 minutes. Most are two to eight minutes each. If reviewing and clearing a segment takes about four minutes, including finding out who was actually in the truck, that is roughly 164 minutes of work, call it 2 hours 45 minutes a month. Split across four Friday afternoons it is 41 minutes a week.
Nobody does it, because 41 minutes a week of tedious work with no visible payoff loses to every other priority. Then an auditor pulls the account, finds 14 months of unassigned time, and now the fleet has a systemic finding rather than a housekeeping task. The arithmetic that makes this worth doing is not the four minutes per segment. It is that the work compounds if you skip it and does not if you do not.
Two habits fix most of it at source. Every movement of a truck, including a 30-foot reposition, happens with somebody logged in. And the review runs on a fixed day, in the diary, the same way payroll does.
Supporting documents and the clock you did not know was running
Supporting documents are the other half of the compliance picture and drivers rarely think about them until an audit. The carrier has to retain a defined set of document types for each driver for each 24-hour period, drawn from categories like bills of lading and itineraries, dispatch and trip records, expense receipts, electronic mobile communication records, and payroll or settlement records.
The part that catches drivers: you are required to submit the supporting documents in your possession to the carrier within 13 days of receiving them. Thirteen days. Not “when you get back”. Not “with the settlement paperwork”.
A receipt in a jacket pocket for three weeks is a compliance failure by a driver who thinks of himself as diligent. Photograph everything at the fuel island and submit it before you pull off the island. It takes 20 seconds and it removes an entire category of finding. If you need to work out whether a document is inside or outside the 13-day window, the days between dates calculator will settle it faster than counting on a calendar.
How the scoring works, roughly
I want to be careful here, because this is an area where confident-sounding articles do real damage.
FMCSA’s Safety Measurement System groups violations into behaviour categories, one of which covers hours-of-service compliance. Violations found at roadside inspections feed that category. Not every violation counts the same: the methodology assigns severity weights so that findings more closely associated with crash risk carry more influence than clerical ones. There is also a recency effect, with newer violations weighted more heavily than older ones inside a look-back period of roughly two years.
What I am not going to do is tell you that a specific violation carries a specific weight, because the methodology has been revised before, FMCSA has published proposed changes to the system, and the exact numbers are not something you should carry in your head from an article. If a number matters to a decision you are making, pull the current published methodology from FMCSA and read it, or ask your safety department to.
For drivers, the practical translation is simpler than the scoring model. Findings from roadside inspections also populate the Pre-Employment Screening Program record, which prospective employers can request. A pattern of small clerical violations reads differently to a hiring safety director than a single overrun caused by a closed interstate. Patterns matter more than individual events, and that is true of both the fleet score and your own record.
Out of service, and what it costs
Some hours-of-service findings result in the driver being placed out of service at the roadside, generally where the driver has exceeded a driving or window limit. The driver stops there until enough off-duty time has been accumulated. The criteria come from the CVSA North American Standard Out-of-Service Criteria, which is published and updated periodically, so the current edition is the one that governs.
The cost is rarely the citation. It is the load that misses its appointment, the reload that gets given away, the hotel, and the conversation with the customer. A driver put out of service at 16:00 on a Thursday has lost Thursday and most of Friday. I would argue that framing does more to change behaviour than any discussion of penalties, because the operational cost is immediate and visible in a way that a score movement is not.
Edits and annotations: how honest drivers look dishonest
I think the conventional line on this is mistaken hardest against a piece of common advice, which is that you should “clean up” your log before you shut down for the night.
Editing a record is legitimate and sometimes necessary. Automatically recorded driving time is treated differently from manually entered statuses and generally cannot simply be reclassified by a driver. Where an edit is permitted, the original record is retained alongside the change, and where the carrier proposes an edit the driver has to confirm or reject it. That system is designed on the assumption that edits happen.
What it is not designed to tolerate is edits without explanation. An unannotated edit is functionally indistinguishable, to an auditor, from an attempt to conceal something. Five unannotated edits across a month reads as a habit. The fix is one sentence per edit, written in your own words, saying what happened and why the change is correct: “Forgot to change to on duty at 06:12 for pre-trip, corrected.” That is thirty seconds of typing that permanently changes how the record reads.
The same logic applies to a carrier that back-edits driver logs. A dispatcher who reclassifies a driver’s on-duty time to off-duty without the driver confirming it has created a false record, and the driver whose name is on it is the one standing at the inspection window.
A ten-minute end-of-day routine
This is the part that actually prevents violations. Do it in the same order every day until it is muscle memory.
- Certify the day before you go off duty. Not tomorrow morning, and not on Sunday for the whole week. Uncertified prior days are one of the easiest findings for an inspector to spot.
- Check the header fields on the current record: tractor number, trailer number, shipping document or trip number, carrier name, main office address. Thirty seconds, and it kills most form and manner findings.
- Read every edit you made today and confirm each one carries an annotation in plain language.
- Confirm any personal conveyance or yard move entries have a purpose annotation attached.
- Photograph and submit the day’s supporting documents. Fuel receipts, scale tickets, bills of lading, tolls.
- Look at tomorrow’s start time and write down the 14-hour window end. On paper, in the cab, where you will see it at 15:00 tomorrow.
- Check your cycle position for the next three days, not just tomorrow. A restart taken on the right night is worth more than any amount of clever driving.
- Once a week, confirm the ELD documentation packet is still in the truck: user manual, data transfer instructions, malfunction reporting instructions, and a supply of blank graph-grids for at least eight days.
Step eight is the one that gets skipped for years and then costs somebody a finding at a scale house. The packet migrates out of the cab during a truck swap and nobody notices until an officer asks.
Where the standard advice is wrong
Two pieces of received wisdom deserve pushback.
The first is “the ELD keeps you legal”. It does not. An ELD is a recorder with an alarm attached. It cannot evaluate whether your sleeper berth pairing qualifies, whether your personal conveyance movement was really for your own purpose, or whether the adverse driving conditions you flagged were foreseeable. It will record a violation just as faithfully as it records compliance. The number of drivers who have been surprised by their own device suggests this is worth saying plainly.
The second is “small violations do not matter”. They matter differently, not less. A single missing trailer number is trivial. A carrier whose inspection history shows the same clerical gap across 30 inspections has demonstrated that nobody is checking anything, and that inference is the thing an auditor acts on. Clerical findings are cheap individually and expensive in aggregate.
I will also admit to genuine uncertainty on one point. There is no reliable way, from outside, to predict how a given officer will treat a borderline case. Two inspections of identical facts can go differently, and drivers who tell you otherwise are describing their own sample of a few dozen stops. Build your habits for the strict reading and you never have to find out which officer you drew.
Frequently asked questions
What is the most common hours of service violation?
Form and manner problems and missing or incomplete records of duty status are the findings inspectors write most often, along with drivers exceeding the 11-hour or 14-hour limits. None of those usually involve deliberate cheating. They come from missing trailer numbers, missing shipping document references, unannotated edits and shifts that ran a little long.
What are form and manner violations on an ELD?
Form and manner covers the required information that has to appear on your record but is missing or wrong. On an ELD that usually means a blank vehicle or trailer number, a missing shipping document or trip number, an uncertified previous day, missing annotations on edits, or the carrier name and address not being set correctly in the device profile.
Do hours of service violations put points on your CDL?
Not directly. Roadside inspection findings feed the carrier’s CSA scores and appear in the driver’s Pre-Employment Screening Program record, which prospective employers can pull. Points on a licence come from state traffic convictions, which is a separate track. A citation issued alongside an inspection can lead to both, so check your own state rules and your carrier policy.
What is unassigned driving time and who has to fix it?
Unassigned driving time is movement an ELD recorded while no driver was logged in, such as a yard move or a technician repositioning a truck. The carrier has to review it and either assign it to the correct driver, who then confirms it, or annotate why it does not belong to anyone. Leaving it unresolved is a finding inspectors and auditors look for.
How long do hours of service violations stay on a CSA record?
FMCSA’s Safety Measurement System looks back roughly two years and weights recent violations more heavily than older ones, so a violation fades in influence before it disappears. Inspection data also sits in the Pre-Employment Screening Program record for several years. FMCSA has revised the methodology before, so check the current published version rather than relying on remembered numbers.
Can you be put out of service for an hours of service violation?
Yes. Driving beyond the 11-hour or 14-hour limits, or beyond your 60- or 70-hour cycle, can result in the driver being placed out of service until enough off-duty time has been accumulated. The criteria are published by CVSA and updated periodically, so confirm the current version with your safety department before assuming what will happen.
What to change on Monday
Pick two things off the list, not twelve. For most drivers the highest-value pair is certifying the day before going off duty and writing the 14-hour window end time on paper at the start of every shift. Those two habits between them prevent the two most-written categories of finding.
For a small fleet, the pair is different: schedule the unassigned driving time review as a recurring calendar item, and audit the ELD documentation packet in every cab once a quarter. Both are dull, both take under an hour, and both remove findings that make a carrier look unmanaged. If you are planning restarts around a heavy week, the 34-hour restart tool runs entirely in your browser, so nothing about your schedule leaves the device you are holding.
Everything above is background, not legal advice. Rules change, penalties and scoring change, and the version that matters is whatever FMCSA publishes today and whatever your safety department tells you the carrier requires. Go and read both.