Hours of Service Rules 2026: The Complete Driver’s Guide to HOS Compliance

If there’s one set of regulations that every commercial driver needs to know cold, it’s the Hours of Service rules. These aren’t just bureaucratic boxes to check — they’re the foundation of your daily operation, and a single HOS violation can put you out of service on the side of the road, cost your carrier thousands in fines, and add damaging points to your CSA score. The federal rules under 49 CFR Part 395 govern exactly when you can drive, how long you can drive, and when you must rest.

In 2026, the core HOS framework reflects the rules finalized by FMCSA in September 2020 — which introduced more flexibility than the previous version without compromising the fundamental safety limits. We’ll walk through every rule clearly, including the parts most drivers find confusing, like the sleeper berth split and the 34-hour restart.

Who Do HOS Rules Apply To?

The Hours of Service regulations apply to drivers of commercial motor vehicles (CMVs) used in interstate commerce. A CMV in this context means a vehicle with a gross vehicle weight rating (GVWR) over 10,000 pounds, or any vehicle transporting hazardous materials in quantities requiring placarding, or any vehicle carrying 9 or more passengers for compensation.

If you’re driving purely within one state (intrastate), your state’s HOS rules apply instead — and some states mirror the federal rules while others have their own versions. But for the vast majority of over-the-road drivers, the federal rules under 49 CFR Part 395 are what govern your logbook every single day.

One important note: these rules apply to property-carrying drivers specifically. Passenger-carrying drivers (bus, motor coach) have a separate HOS structure — we’re focusing on property carriers here, which covers most of the trucking industry.

The Five Core HOS Rules You Must Know

Think of HOS compliance as five interlocking limits. Violate any one of them and you’re out of compliance, even if you’re within the others. Here they are:

Now let’s break each one down properly, because the details matter more than people realize.

Rule 1: The 11-Hour Driving Limit

After taking 10 consecutive hours off duty, you can drive for a maximum of 11 hours. You don’t have to use them all at once — you can drive 4 hours, go off duty for a fuel stop, then continue driving. What matters is the total accumulated driving hours since your last 10-hour break.

Once you hit 11 driving hours, you cannot drive again until you’ve had another 10 consecutive hours off duty. There’s no extension, no carry-over, no exception for being “almost there.” Ten hours off. Then you can drive again.

One thing worth noting: driving hours and on-duty hours are not the same thing. You can be on duty doing pre-trip inspections, loading, waiting at a receiver, or doing paperwork — none of that counts as driving hours. But it all counts toward your on-duty total, which feeds into Rule 2.

Rule 2: The 14-Hour Driving Window

This is the rule that confuses most new drivers, and honestly it trips up experienced drivers too. The 14-hour window is not a driving limit — it’s a time limit on when you can drive.

The moment you come on duty, a 14-hour clock starts running. You cannot drive after the 14th consecutive hour since that moment — regardless of how many of those hours you actually spent driving. The window does not pause when you stop for breaks, meals, or load wait times.

This is why experienced dispatchers and fleet managers plan loads carefully around realistic on-duty start times. If you start your day early, your legal driving window ends early — and no amount of waiting time buys it back. This interacts directly with how carriers manage ELD compliance, since your ELD tracks the 14-hour window automatically from your first on-duty event.

Rule 3: The 30-Minute Break Requirement

After 8 consecutive hours of driving, you must take a break of at least 30 minutes before driving again. The 2020 HOS rule revision made a helpful change here that most drivers haven’t fully absorbed yet: the break can now be taken as “on-duty not driving” time — not just off-duty or sleeper berth time.

What does that mean practically? If you’ve been driving for 8 hours and you’re at a delivery location waiting for a dock to open, that wait time can count as your 30-minute break — as long as you’re not driving. You don’t need to formally go off-duty. This is a significant quality-of-life improvement from the previous rule, which required the break to be off-duty or sleeper time.

The 8 hours that trigger the break requirement reset after your 30-minute break. So if you drive 7 hours, take a 45-minute break, then continue, you have another 8 hours of drive time before you need another break (assuming your other limits aren’t hit first).

Rule 4: The 70-Hour Weekly Limit

Over any 8 consecutive days, you cannot drive after accumulating 70 hours of on-duty time. And remember — on-duty time includes everything: driving, loading, unloading, fueling, pre-trip inspections, waiting at shippers, doing paperwork. Not just driving hours.

This is a rolling 8-day calculation, not a fixed work week. Every day, the oldest day drops off and the newest day is added. So if you hit 70 hours on a Thursday, you’re out of driving hours until enough hours from your oldest days drop off the 8-day window — or until you take a 34-hour restart (covered below).

Carriers that run 7 days a week use the 70-hour/8-day limit. Carriers that don’t operate for a full 7-day week can use a 60-hour/7-day limit instead — same concept, just a slightly smaller window. Most OTR carriers use the 70-hour option since they operate continuously.

Rule 5: The 10-Hour Off-Duty Requirement

Before you can start a new driving period, you need 10 consecutive hours off duty. This resets both the 11-hour driving limit and the 14-hour window. It does not reset the 70-hour weekly limit — for that, you need the 34-hour restart.

The 10-hour off-duty period can be split under specific conditions using the sleeper berth provision — which we’ll cover next, because it has its own rules.

The Sleeper Berth Split Provision

If you’re driving a truck equipped with a sleeper berth, you have an option to split your required off-duty time into two separate periods instead of taking it all at once. This gives long-haul drivers more flexibility in managing their rest around load schedules.

Under the current rule (effective since September 2020), the sleeper berth split works like this:

• One period must be at least 7 consecutive hours in the sleeper berth
• The other period must be at least 2 consecutive hours — either off-duty, in the sleeper berth, or a combination
• Together, the two periods must total at least 10 hours
• Neither period alone satisfies the full 10-hour off-duty requirement — they only count together

The important benefit of the split: during the calculation of your 14-hour window, the shorter split period (the 2-hour piece) is excluded. This effectively extends your available driving window, which is why the sleeper berth option exists in the first place.

Sleeper berth splits can get complex to calculate manually, which is one reason ELD systems are so valuable — modern ELDs calculate available hours automatically based on your logged status changes.

The 34-Hour Restart

Once you’ve used up your 70-hour weekly allotment, you need to restart the clock. The 34-hour restart allows you to reset your 70-hour accumulation by taking at least 34 consecutive hours off duty or in the sleeper berth.

Under the 2020 rule revision (which remains in effect through 2026), the previous requirement that the 34-hour restart must include two periods from 1:00 AM to 5:00 AM was eliminated. Now you just need 34 consecutive hours off — no specific time-of-day requirement. This was a significant improvement for drivers who need flexibility in when they rest.

After a successful 34-hour restart, your 70-hour accumulation resets to zero and a new 8-day period begins. Your 11-hour driving limit and 14-hour window also reset with a restart.

Personal Conveyance and Yard Moves

Two special off-duty driving designations deserve specific attention because they’re commonly misused — and misuse is a federal violation.

Personal Conveyance (PC)

Personal Conveyance allows you to move the commercial vehicle for personal reasons — like driving from a truck stop to a nearby restaurant or hotel — without it counting as on-duty driving time. The key conditions: the movement must be authorized by your carrier, it must be for personal reasons (not to advance the load), and the vehicle can be loaded or bobtail.

What PC is not: a way to extend your driving window after your hours run out. FMCSA specifically prohibits using PC to move the load forward. If you’re driving the truck toward your next delivery, that’s on-duty driving time — full stop. Misusing PC is one of the most commonly cited HOS violations during audits because it’s easy to detect in ELD data.

Yard Moves (YM)

Yard Moves allow you to operate the vehicle within a private property yard — like a terminal or shipper’s facility — without counting the movement as driving time. This applies to moving trailers, spotting equipment, or repositioning within the yard. The moment you leave private property and enter a public road, YM status ends and normal on-duty driving rules apply.

Key HOS Exemptions You Should Know About

Not every driver or every situation is covered by the standard HOS rules. Several exemptions exist:

The Adverse Driving Conditions Extension — How It Works

This is one of the most useful exemptions, but also one of the most misunderstood. If you encounter adverse weather or road conditions that couldn’t be anticipated at the start of your trip — a sudden snowstorm, flooding, fog that drastically slows traffic — you’re allowed to extend your 11-hour driving limit by up to 2 additional hours (to 13 hours total) and your 14-hour window by 2 additional hours as well.

The critical word is “encountered.” If you knew there was a blizzard in your path when you started your trip and drove into it anyway, that doesn’t qualify. The conditions must be unexpected. And the extension is only to drive to a safe stopping place — not to complete your full delivery. Document the specific conditions in your ELD notes or paper log remarks section.

HOS Violations — What They Cost You

Running out of hours isn’t like running a red light. The consequences stack up fast. A driver found in violation of HOS rules during a roadside inspection will be placed out of service immediately and cannot drive until they’ve accumulated enough off-duty time to become compliant again. That means you’re sitting — for free, in most cases — until the hours reset.

On the CSA side, HOS violations carry some of the highest severity weights in the system. Operating beyond the 11-hour driving limit carries a severity weight of 7. Falsifying logs or ELD records carries a weight of 10 — the maximum. These points stay on your record and your carrier’s record for 24 months, affecting both your employability and your carrier’s safety rating. For a deeper look at how violations affect your standing, see our DOT fines and CSA scoring guide.

The civil penalties are also significant. According to 49 CFR Part 395, FMCSA can assess penalties of up to $19,246 per HOS violation for carriers, and higher amounts for willful violations. Falsifying records can trigger criminal penalties in addition to civil ones.

How Your ELD Tracks HOS

Since December 2017, most commercial drivers are required to use an Electronic Logging Device to record their HOS automatically. The ELD connects directly to the vehicle’s engine and records driving time the moment the vehicle exceeds 5 mph. You can’t manually override driving time — if the truck is moving, driving hours are accumulating.

What you do control manually is your duty status when not driving: On Duty Not Driving, Off Duty, and Sleeper Berth. Every status change needs to be logged accurately and promptly. Forgetting to log a status change — like leaving yourself in “On Duty Not Driving” when you’ve actually gone to sleep — skews your hours calculations and creates a record that doesn’t match reality. That’s an audit problem.

Modern ELD systems show your remaining hours in real time across all limits: remaining drive time, time until your 14-hour window closes, accumulated on-duty hours for the week. Learn your specific device’s display so you’re not guessing when you’re close to limits. The ELD mandate and how it all works is covered in detail in our complete ELD guide.

Frequently Asked Questions About HOS Rules