By Michael Nielsen, Publisher | 15+ Years in Diesel Repair
Last Updated: October 2026
Hours of service violations are breaches of the federal limits on how long a commercial driver may drive and stay on duty, found in 49 CFR Part 395. They are among the most common roadside findings and affect the driver, the carrier, and the carrier's safety record.
This Heavy Duty Journal guide covers the limits, the violations that show up most often, how penalties and CSA scoring work, and how to prevent violations. It quotes no penalty amounts or insurance percentages, because those change and vary, and it corrects older claims about the 34-hour restart.
Key Takeaways
- ✓The 14-hour window never pauses. Breaks do not extend it, so a driver can reach the 14-hour limit before using all 11 driving hours.
- ✓The 34-hour restart has no overnight condition. FMCSA's current summary requires 34 or more consecutive hours off duty, and older guides citing a 1 a.m. to 5 a.m. rule are out of date.
- ✓Penalty figures change. Civil penalties are adjusted for inflation and vary by violation, carrier, and history, so check FMCSA's current schedule instead of relying on a number from a blog.
- ✓Carriers share the exposure. Allowing or requiring a driver to exceed limits can bring penalties against the carrier, and coercion is separately prohibited.
Hours of Service Violations: The Rules Behind Them
Per FMCSA's hours of service summary, property-carrying drivers may drive up to 11 hours after 10 consecutive hours off duty, may not drive after the 14th consecutive hour on duty, and need a 30-minute interruption after 8 cumulative hours of driving. Weekly limits are 60 hours in 7 days or 70 hours in 8 days.
11 / 14 / 8
Property carriers: 11 driving hours, a 14-hour window, and a 30-minute break after 8 cumulative driving hours, per FMCSA's hours of service summary.
The 14-hour window starts when the driver comes on duty and does not stop for breaks, which is why loading delays can end a driving day early. The summary also covers the sleeper berth split provision and up to two additional hours for adverse driving conditions, so check those before declaring a violation.
A driver may restart the 7- or 8-day period after 34 or more consecutive hours off duty. FMCSA's current summary lists no requirement for two overnight periods, so guides that still cite a 1 a.m. to 5 a.m. condition are outdated.
The Most Common Violations
Most violations cluster in a few areas. Driving past the 11-hour limit or after the 14th hour is the clearest violation, often caused by delays at shippers and receivers. Missing the 30-minute interruption, exceeding the 60/70-hour limit, and starting a driving day without a valid restart are also common.
Log violations are the other large group: false or missing duty status, form-and-manner errors, missing supporting documents, and misuse of personal conveyance or yard moves. CVSA's 2026 out-of-service criteria, effective April 1, 2026, amended conditions for ELD tampering and false records, so treat edits that hide driving time as the highest-risk behavior.
Intentional falsification and coercing a driver to violate the rules are treated far more seriously than an honest planning error. Both are separate violations from simply running out of hours, and FMCSA's anti-coercion rule protects drivers who refuse unsafe demands.
Penalties and Consequences
Consequences come at three levels. A driver can be placed out of service until enough off-duty time has accumulated. FMCSA and states can assess civil penalties against drivers and carriers. And the violation enters the carrier's safety data, where it affects the Hours-of-Service Compliance BASIC for 24 months with time weights favoring recent events.
Civil penalties depend on the violation, the carrier's history, and the year, because the maximums are adjusted for inflation, so check FMCSA's current schedule instead of relying on averages from older articles. Carriers can be penalized for allowing or requiring violations, and knowing, willful cases can involve criminal exposure.
Insurers and shippers often look at safety data, but how they respond varies by company. HDJ's CSA score management guide explains how violations reach a carrier's profile, and the FMCSA compliance requirements guide covers the wider rule set.
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Prevention for Drivers and Dispatchers
Prevention starts before the trip. Plan each load with the clock in mind, count loading and unloading inside the 14-hour window, include the 30-minute interruption, and leave margin for traffic and weather. Identify safe parking before hours run low, since the worst decisions happen when a driver is out of time and out of parking.
Dispatch and customer practices matter as much as driver habits. Dispatchers should see each driver's remaining hours when assigning loads, schedules should be built on realistic times, and appointment windows should leave room for delay. Written policy should state that no driver will be pressured to violate the rules.
Key Recommendation
Plan every load to finish with at least an hour of margin inside the 14-hour window, and give dispatch a view of each driver's remaining hours when loads are assigned.
Train drivers on the rules and the exceptions, with scenarios from your own lanes, and review ELD alerts and edits for patterns. Reward clean performance rather than only punishing violations, and look for systemic causes such as one customer whose dock delays repeatedly push drivers over.
ELDs and Record Requirements
Most drivers who must keep records of duty status use an electronic logging device (ELD). The ELD records driving automatically, warns as limits approach, and prevents many of the form-and-manner errors that paper logs produced. The driver and carrier remain responsible for accurate annotations and correct edits.
Exceptions exist, including drivers who use paper logs no more than 8 days in any 30-day period, driveaway-towaway operations, and vehicles with pre-2000 engines, and short-haul drivers have their own rules. HDJ's ELD mandate rules and exceptions guide covers devices and malfunctions in detail.
Carriers must keep records of duty status and supporting documents for six months, and supporting documents include bills of lading, dispatch records, and fuel and toll receipts. Back up ELD data regularly. HDJ's fleet compliance management software and recurring checklist for DOT audits guides cover tracking.
Frequently Asked Questions
What are hours of service violations?
They are breaches of the limits in 49 CFR Part 395 on driving and on-duty time, such as driving past 11 hours, driving after the 14th hour, skipping the 30-minute interruption, exceeding the 60/70-hour limit, or keeping false or incomplete logs.
Does the 34-hour restart need two nights from 1 a.m. to 5 a.m.?
No. FMCSA's current summary lets a driver restart the 7- or 8-day period after 34 or more consecutive hours off duty, with no overnight-period condition. Older guides that describe a 1 a.m. to 5 a.m. requirement are outdated.
Can breaks extend the 14-hour window?
No. The window runs continuously from the time the driver comes on duty, and a break does not pause it. FMCSA's summary describes the sleeper berth split and an adverse driving conditions extension, so check those provisions before concluding a violation occurred.
How much is the fine for an hours of service violation?
It varies by violation, carrier history, and year, and the maximums are adjusted for inflation. Check FMCSA's current penalty schedule rather than an average from an article, and expect carrier-level exposure when a carrier allows or requires violations.
How long do violations affect CSA scores?
SMS uses a 24-month window, with time weights that favor recent violations. The violation affects the Hours-of-Service Compliance BASIC and fades as newer clean events accumulate, then drops out after 24 months, subject to any methodology changes by FMCSA.
Who must use an ELD?
Most drivers who must keep records of duty status. Exceptions include paper logs no more than 8 days in any 30-day period, driveaway-towaway operations, and vehicles with pre-2000 engines, and short-haul drivers may not need records of duty status. Confirm your situation in FMCSA's guidance.
The Bottom Line
Hours of service violations are mostly planning failures. Knowing the 11, 14, and 8-hour rules, using ELD alerts, building schedules with margin, and keeping honest records prevent most of them.
Heavy Duty Journal's guidance at heavydutyjournal.com, from publisher Michael Nielsen and the HDJ editorial team, is to give dispatch visibility into driver hours, plan with margin, and verify any penalty figure on FMCSA's current schedule.
As of October 2026, FMCSA has signaled possible ELD revisions and the enforcement criteria were updated in April, so confirm current rules on FMCSA's site before acting.
Send This to Your Dispatcher
Know a dispatcher still planning around the old 34-hour restart rule? Pass this along before the next load.
