Sleeper Berth Rules: FMCSA HOS Split Requirements
The FMCSA sleeper berth provision allows drivers to split their required 10-hour off-duty period into two segments instead of taking it all at once. Properly using the 7/3 or 8/2 split gives OTR drivers more scheduling flexibility and can effectively extend their productive hours. But the rules are specific, and mistakes lead to HOS violations.
7/3 Split
Most Common Split
8/2 Split
Alternative Split
75″ Min
Berth Length Required
$16,000+
Max Violation Fine
O Trucking Editorial Team
Trucking Industry Experts
Fact-Checked by O Trucking Dispatch Team
5+ years managing HOS compliance for OTR carriers, including sleeper berth provision planning and ELD auditing
Sources:
This article was written by the O Trucking editorial team with 9+ years of combined trucking industry experience. Learn more about us.
O TruckingSleeper Berth Rules: FMCSA Hours-of-Service Split Requirements (2026)
Sleeper Berth Provision Overview
Under standard hours-of-service rules, a driver must take at least 10 consecutive hours off-duty before driving again. The sleeper berth provision is an exception that allows drivers to split this 10-hour rest period into two parts — as long as one part is spent in the sleeper berth.
This provision exists because OTR drivers face variable conditions — traffic, weather, loading delays, and parking availability — that make it impractical to always take a full 10-hour break at the optimal time. The split provision gives drivers flexibility to rest in shorter segments while still meeting the total rest requirement.
Two split options are currently allowed under FMCSA regulations:
7/3 Split
7 hours in the sleeper berth + 3 hours off-duty (or sleeper berth). Neither period counts against the 14-hour driving window.
8/2 Split
8 hours in the sleeper berth + 2 hours off-duty (or sleeper berth). Neither period counts against the 14-hour driving window.
The 7/3 Split Explained
The 7/3 split is the most commonly used sleeper berth split. Here is how it works:
First period: 7 hours in the sleeper berth
You must log at least 7 consecutive hours in the sleeper berth on your ELD. This time does not count against your 14-hour driving window. You must actually be in the sleeper berth — you cannot be in the passenger seat or outside the truck.
Driving period: Up to 11 hours
After the 7-hour rest, you can drive. Your available driving time and 14-hour window are calculated based on the time preceding the 7-hour sleeper berth period — the 7 hours are “excluded” from the window calculation.
Second period: 3 hours off-duty or sleeper berth
Before or after the 7-hour period, you must take an additional 3 consecutive hours in either off-duty or sleeper berth status. This completes the 10-hour total rest requirement. This 3-hour period also does not count against the 14-hour window.
The 3-Hour Period Can Be Taken Before or After the 7
The 8/2 Split Explained
The 8/2 split works the same way as the 7/3 but with a different time distribution:
8 consecutive hours in the sleeper berth — One hour more than the 7/3 split. This period does not count against the 14-hour driving window.
2 consecutive hours off-duty or in the sleeper berth — Shorter complementary period. Does not count against the 14-hour window. Can be taken before or after the 8-hour period.
The 8/2 split is useful when you want a longer primary rest period (more sleep) combined with a shorter break. For example, you might take a 2-hour break in the afternoon to eat and rest, drive through the evening, then take an 8-hour sleeper berth period overnight. The 8/2 is generally preferred by drivers who want to get their main sleep period over with in one stretch.
Minimum Berth Dimensions for Compliance
To use the sleeper berth provision, your sleeper berth must meet FMCSA's minimum size requirements under 49 CFR 393.76:
Length: at least 75 inches (6' 3″)
Width: at least 24 inches
Height: at least 24 inches of clearance above the sleeping surface
Must be securely mounted, ventilated, and protected from exhaust fumes
All factory sleeper cabs from major manufacturers exceed these minimums. The requirement becomes relevant for aftermarket builds, van conversions, or modified sleeping arrangements. If your berth does not meet these specs, you cannot legally use the split sleeper berth provision — you must take the full 10 consecutive hours off-duty. For detailed dimensions by manufacturer, see our sleeper cab dimensions guide.
What Counts as Sleeper Berth Time
Counts as Sleeper Berth Time
- Sleeping in the sleeper berth
- Resting in the sleeper berth (reading, watching TV)
- Eating a meal in the sleeper berth
- Personal activities in the sleeper berth
- Using a laptop or phone in the sleeper
Does NOT Count as Sleeper Berth Time
- Sitting in the driver's seat (even if resting)
- Riding as a passenger (co-driver)
- Standing outside the truck
- Performing vehicle maintenance
- Doing paperwork at a desk (not in berth)
Common Sleeper Berth Split Mistakes
Not completing both periods — You must complete both the long period (7 or 8 hours) AND the short period (3 or 2 hours) to satisfy the split. Completing only one period does not count as a valid split.
Interrupting the sleeper berth period — Each period must be consecutive. If you log 5 hours in the sleeper berth, switch to on-duty for 30 minutes, then go back to sleeper for 2 hours, the 7-hour period is not satisfied. You would need to start over.
Logging the wrong status on the ELD — The sleeper berth period must be logged as “sleeper berth” status, not “off-duty.” If you log 7 hours off-duty (not sleeper berth), the split provision does not apply — you would need 10 consecutive hours.
Misunderstanding the 14-hour window calculation — The split sleeper provision “pauses” the 14-hour window during each qualifying period. Many drivers miscalculate their available time because they do not correctly exclude the sleeper periods.
Mixing split types — You must complete one valid split combination (7/3 or 8/2). You cannot combine a 7-hour sleeper period with a 2-hour off-duty period — that only adds up to 9 hours and does not satisfy either split pattern.
Violations Are Expensive
Strategies for Maximizing Driving Time
Use the 7/3 split to work around traffic — Take a 3-hour break during afternoon rush hour, drive through the evening and night, then take your 7-hour sleeper period overnight. You avoid the worst traffic and maximize productive driving hours.
Use the split to manage loading/unloading delays — If you arrive at a shipper or receiver and expect a 3+ hour wait, log it as off-duty (or sleeper berth) to start one of your split periods. Convert dead time into productive rest time.
Plan splits around safe parking availability — Know where truck stops and rest areas are on your route. Plan your 7 or 8-hour sleeper period for a safe location with amenities, not a random shoulder pull-off.
Coordinate splits with your dispatcher — Your dispatcher should know you are using the split provision and plan your loads accordingly. Pickup and delivery appointments should align with your driving windows, not conflict with your rest periods.
Use an ELD app that calculates split berth time — Most modern ELD devices have built-in split sleeper berth calculators that show your remaining driving time under the split provision. Use this feature to avoid miscalculations.
The 7/3 Split Is More Flexible for Most Drivers
How Our Dispatch Team Manages Sleeper Berth Splits
At O Trucking LLC, proper HOS management is central to how we dispatch. We proactively help our carriers use the sleeper berth provision effectively:
Load scheduling around split berth windows
We plan pickup and delivery appointments that work with the driver's split schedule, not against it. If a driver is using a 7/3 split, we ensure loads are scheduled so the 7-hour sleeper period falls during a time that makes sense for safe parking and rest.
HOS compliance monitoring
We monitor our carriers' ELD logs to ensure sleeper berth splits are logged correctly. If we see a potential compliance issue, we flag it before the driver gets back on the road — not after a roadside inspection finds it.
Maximizing productive hours safely
Using the split provision correctly can add significant driving time to a driver's week without violating any rules. We help our carriers understand and use the provision so they can make more money without compromising safety or compliance.
Need a Dispatch Team That Understands HOS Splits?
Our dispatchers plan loads around sleeper berth splits, monitor ELD compliance, and help our carriers maximize driving time without risking violations.