HOS compliance means your drivers operate within the FMCSA hours-of-service limits on how long they can drive and be on duty before rest, and your logs, usually ELD records, accurately show it. It is not just owning an ELD. Someone still has to review the data, resolve issues, and hold drivers accountable.
Most small fleets hear "HOS compliance" and picture the ELD device on the dash. That is the easy part. The hard part, and the part that actually keeps you out of trouble, is the review and the accountability behind it. Let me break it down.
What HOS compliance means
Hours of Service (HOS) rules are federal limits on how long a commercial driver can drive and work before taking required rest. Compliance means three things at once: your drivers stay within those limits, your logs accurately record their duty status, and you can prove it if FMCSA or a broker asks. Miss any one of the three and you have a problem, even if the truck never had a crash.
The core HOS limits
These are the federal limits for most property-carrying CDL drivers. Confirm what applies to your specific operation, since exceptions exist.
- 11-hour driving limit. Generally, a driver may drive up to 11 hours after 10 consecutive hours off duty.
- 14-hour window. A driver cannot drive beyond the 14th consecutive hour after coming on duty, even with breaks during that window.
- 30-minute break. A break is required after 8 cumulative hours of driving time.
- 60/70-hour limit. A driver cannot drive after 60 hours on duty in 7 days or 70 hours in 8 days, depending on the schedule the carrier runs.
These come from 49 CFR Part 395. Exceptions and provisions exist for short-haul operations, adverse driving conditions, and sleeper-berth splits, so confirm what applies to your operation. Sources are listed at the end.
What compliance actually requires, beyond the ELD
An ELD records duty status. It does not review the logs, resolve unassigned or unidentified driving, catch a pattern across drivers, or fix a dispatcher who scheduled a run that could not be completed legally. HOS compliance is the human work on top of the device: a real log review, corrective action when something is wrong, and honest scheduling. For a practical version of that review, see our driver log auditing checklist.
Who has to follow HOS rules
Generally, HOS applies to most drivers operating commercial motor vehicles in interstate commerce. Some operations use exceptions, such as the short-haul provision, and some drivers are not required to use an ELD in specific situations. This is exactly the kind of detail worth confirming for your operation rather than assuming, because getting it wrong is itself a violation.
How HOS ties to CSA and audits
HOS is one of the seven CSA BASICs, and it is one of the fastest to climb. Repeated HOS violations can raise your CSA score, draw regulatory attention, and show up in a DOT audit. A pattern of log problems also reads as operational risk to insurers. None of that requires a crash. It just requires the paperwork to not match the operation.
How Fleet Regulators helps
We audit every driver's logs on a daily cadence, resolve unassigned driving, flag limit and form-and-manner issues, and document corrective action so it holds up in an audit. For a small fleet that cannot justify a full-time safety hire, our fractional safety support covers HOS and the rest of compliance for a fraction of the cost. You can see real client results from fleets that put this in place.
People think HOS compliance is a product you buy. It is not. It is a habit. The fleets that stay clean are the ones where somebody actually looks at the logs and has the honest conversation when the same driver, or the same dispatcher, keeps creating the same problem. The device is the cheap part.
Common Mistakes Carriers Make
(1) Assuming the ELD makes you compliant on its own. (2) Never reviewing the data. (3) Leaving unassigned driving unresolved. (4) Not knowing which HOS exceptions actually apply to your operation. (5) Treating a missing or unsigned log as a small thing. (6) Blaming the driver when dispatch scheduled an illegal run.
Not Sure If You Are Compliant?
Book a free compliance review. We will pull a sample of your recent ELD data, show you where the risk is, and tell you exactly what needs to change.
Book a Free Compliance Review →HOS & Log Auditing
Fleet Regulators audits logs daily, resolves unassigned driving, coaches repeat offenders, and fixes the dispatch habits that create violations.
Get HOS Support →Frequently Asked Questions
Hours of Service (HOS) rules are the FMCSA limits on how long a commercial driver can drive and stay on duty before required rest. HOS compliance means your drivers operate within those limits and your logs accurately show it. It is more than owning an ELD. Someone has to review the data and act on it. See our HOS compliance service.
No. An ELD records duty status, but it does not review logs, resolve unassigned driving, coach drivers, or fix scheduling. A person still has to audit the data and act on it.
For most property-carrying CDL drivers: an 11-hour driving limit, a 14-hour on-duty window, a required 30-minute break after 8 hours of driving, and a 60/70-hour weekly limit. Exceptions exist for short-haul, adverse driving conditions, and sleeper-berth use, so confirm what applies to your operation.
Generally, HOS applies to most drivers operating commercial motor vehicles in interstate commerce, with some exceptions such as the short-haul provision. Because the exceptions carry conditions, it is worth confirming what applies to your specific operation rather than assuming.