Hours of Service (HOS) and logbook violations operate in a different enforcement world than ordinary Maryland traffic tickets. They arise under federal rules (49 CFR Part 395), they’re enforced primarily at roadside inspections and weigh stations rather than in District Court, and their consequences are out-of-service orders, federal civil penalties (up to roughly $16,000 for serious violations), and CSA points on the carrier’s safety record — not points on your Maryland license. The core HOS limits for property-carrying drivers are the 11-hour driving limit, the 14-hour on-duty window, a required 30-minute break after 8 hours of driving, and a 60/70-hour weekly cap. Logbook and electronic-logging-device (ELD) violations — incomplete logs, no logs, or, most seriously, falsified logs — compound the exposure. And one HOS-related offense crosses back into CDL territory: violating an out-of-service order is itself a disqualifying offense. Understanding how this system works is essential for any Maryland commercial driver.
Because HOS and logbook enforcement runs through the federal safety system rather than the state traffic courts, drivers and carriers often misunderstand the stakes. These violations don’t put points on your driver’s license the way a speeding ticket does — but they can ground you at the roadside, generate significant federal fines, and damage the carrier’s safety rating in ways that follow both the driver and the company.
The Core Hours of Service Rules
For property-carrying commercial drivers, the federal HOS limits are:
- 11-hour driving limit: a driver may drive no more than 11 hours after 10 consecutive hours off duty;
- 14-hour on-duty window: a driver may not drive beyond the 14th consecutive hour after coming on duty — and that clock cannot be paused, even for breaks, loading, or fueling;
- 30-minute break: required after 8 cumulative hours of driving;
- 60/70-hour limit: no driving after 60 on-duty hours in 7 consecutive days, or 70 hours in 8 days; and
- 34-hour restart: the weekly clock resets after at least 34 consecutive hours off duty.
Drivers using a sleeper berth may split the required 10 hours off duty under specific rules (such as a 7-hour-plus-2-hour split). A short-haul exception applies to drivers who stay within a 150 air-mile radius and return to their reporting location within 14 hours — those drivers are exempt from the ELD and 30-minute-break requirements. Misapplying an exception you don’t qualify for is itself a violation.
The ELD Mandate and Logbook Violations
Since December 2017, most commercial drivers have been required to track their hours with an electronic logging device rather than a paper logbook. The ELD records driving time automatically, which makes the old practice of “adjusting” a paper log far harder. Common logbook/ELD violations include:
- Form-and-manner violations: logs that are incomplete, inaccurate, or not properly maintained;
- No log or not current: failing to have a record of duty status available or up to date;
- ELD malfunctions not addressed: failing to maintain paper backups or repair a malfunctioning device within the required window; and
- Falsification or tampering: altering ELD records to conceal a violation — the most serious category, because it can transform a paperwork issue into an allegation of deliberate fraud.
Out-of-Service Orders
The most immediate consequence of a serious HOS violation found at a roadside inspection is an out-of-service order — the driver is grounded on the spot. Under the inspection criteria, a driver is placed out of service for driving more than 3 hours beyond the 11-hour limit, driving after the 14-hour window has expired, or operating after exceeding the 60/70-hour weekly limit. The driver typically cannot move the vehicle until they have come back into compliance (for example, taken the required off-duty time).
This is where HOS crosses into CDL disqualification territory. Violating an out-of-service order — driving when you’ve been ordered not to — is itself a disqualifying offense, carrying a federal civil penalty of at least $2,500 for a first conviction and at least $5,000 for a subsequent one, plus a CDL disqualification. See CDL disqualifications in Maryland for how those periods work.
Fines and CSA Points
Beyond the roadside out-of-service order, HOS and logbook violations carry federal civil penalties that can climb to roughly $16,000 per violation for the most serious or egregious cases (for instance, exceeding the driving limit by more than 3 hours). Just as important for a career driver, the violations feed the carrier’s CSA (Compliance, Safety, Accountability) score under the Hours-of-Service Compliance category. CSA points are weighted by recency and tracked for 24 months; a carrier above the intervention threshold faces targeted audits and higher insurance costs. A driver with a pattern of HOS violations becomes a liability to employers, which can affect hiring and retention even though no points appear on the state driving record.
What to Do About an HOS or Logbook Violation
Because these violations run through the federal system, the response is different from contesting a traffic ticket. Key points:
- DataQs challenges. A driver or carrier who believes an inspection finding is incorrect can file a Request for Data Review (DataQs) to challenge the violation in the federal record.
- Accuracy of the finding. ELD records, supporting documents (fuel and toll receipts, bills of lading), and the inspection report can be examined for errors in how the violation was recorded or calculated.
- Falsification allegations are serious. An allegation that logs were deliberately falsified is far more serious than a form-and-manner error and warrants careful handling, because it speaks to honesty and can have outsized career consequences.
- Don’t drive on an out-of-service order. Whatever the dispute, driving in violation of an out-of-service order converts a fixable problem into a disqualifying offense.
If an HOS matter was charged alongside a Maryland traffic citation, the traffic side is handled in the usual way — see payable vs. must-appear tickets in Maryland.
Related Questions
- CDL disqualifications in Maryland — Why violating an out-of-service order disqualifies your CDL.
- How traffic tickets affect a Maryland CDL — The broader CDL framework.
- Maryland CDL overweight violations — Another roadside-inspection issue.
- Out-of-state CDL holders ticketed in Maryland — How interstate enforcement follows you.
- Maryland DUI and CDLs — The most serious CDL exposure of all.
Different System, Real Consequences
HOS and logbook violations won’t put points on your Maryland license, but they can ground you at the roadside, generate federal fines reaching into five figures, damage your carrier’s safety rating, and — if you drive on an out-of-service order — disqualify your CDL outright. The defenses run through the federal system, including DataQs challenges and scrutiny of the inspection record. A lawyer who understands both the Maryland and federal commercial-driving rules can help evaluate an inspection finding and protect your record and your livelihood.
Toll-free: 1-877-566-2408. For the broader picture, see the complete Maryland CDL driver’s guide.
Last updated: May 26, 2026.