The Split Sleeper Berth Rule, Explained Like Your ELD Sees It
One rule, five ways to rest, and exactly two of them involve splitting. Here is what 49 CFR 395.1(g)(1) actually says — including the parts most articles skip.
The five legal ways to get your 10 hours
Drivers with a compliant sleeper berth can satisfy the 10-hour reset requirement by accumulating any of these:
- 10 consecutive hours off duty.
- 10 consecutive hours in the sleeper berth.
- A consecutive combination of berth and off-duty time totaling 10 hours — say 6 in the berth then 4 off duty, back to back.
- At least 7 consecutive berth hours plus up to 3 hours riding in the passenger seat while the truck moves, immediately before or after the berth time (the team-driver option added in 2020).
- The equivalent of 10 hours built from two separate periods — the split sleeper provision this site is about.
What makes a valid split
Two separate periods count as the equivalent of 10 consecutive hours when all three are true:
- One period includes at least 7 consecutive hours in the sleeper berth. Off-duty time doesn't count toward that stretch — 8 hours in a motel is not a berth period.
- Neither period is shorter than 2 consecutive hours. The shorter one can be off duty, in the berth, or a combination.
- The two periods together total at least 10 hours.
That's why the labels are 8/2 and 7/3: with a 7-hour berth stretch you need 3 hours on the other side just to reach 10. Anything above the floors works — 9/2, 8/3, 7.5/2.5 — and the breaks can come in either order.
| 8/2 split | 7/3 split |
|---|
| Longer period | 8+ consecutive hours, sleeper berth only | 7+ consecutive hours, sleeper berth only |
| Shorter period | 2+ hours, berth / off duty / combo | 3+ hours, berth / off duty / combo (to reach 10) |
| Order | Either — recalculation anchors to whichever came first |
| 14-hour window | Neither break counts, once both are complete |
| 70-hour clock | Untouched |
Who can use it
Property-carrying drivers operating a CMV with a sleeper berth meeting the construction requirements of 49 CFR 393.76. No qualifying berth, no split — regardless of company policy. Passenger-carrying drivers have their own, tighter provision. It's also optional: FMCSA's 2020 guidance confirms you can run a full 10-hour reset some days and a split on others, and no carrier can force the split.
What the 2020 rule changed
Before September 29, 2020, only the 8/2 was legal. The 2020 HOS Final Rule added the 7-hour berth option, which is what makes 7/3 splits possible. FMCSA has since been running a pilot program testing 6/4 and 5/5 splits with enrolled drivers — unless you're in it, 6/4 and 5/5 remain violations.
The most common way a good split goes bad: logging even 30 minutes of on-duty time inside the "7-hour berth period". The stretch is no longer 7 consecutive berth hours, the pairing fails, and both breaks get counted back into your 14-hour window at inspection.
Check your split free
FAQ
What are the legal split sleeper berth options?
Two named pairings: 8/2 (at least 8 consecutive hours in the sleeper berth plus at least 2 hours off duty or in the berth) and 7/3 (at least 7 consecutive berth hours plus at least 3 hours). In practice any pairing works if one period has 7 or more consecutive sleeper-berth hours, neither period is under 2 hours, and the two total at least 10 hours.
Does the 7-hour break have to be in the sleeper berth?
Yes. The longer qualifying period must include at least 7 consecutive hours logged as sleeper berth. Eight hours off duty in a motel does not satisfy it.
Is a 7.5/2.5 split legal?
Yes. Fractional splits qualify as long as the berth stretch is 7+ consecutive hours, the other period is 2+ hours, and the total is 10 hours or more. A 7/2.5 pairing fails only because it totals 9.5 hours.
Do I have to use the split sleeper provision?
No. It is optional. You can take a full 10-hour reset some days and a split on others — FMCSA confirmed this explicitly in its 2020 guidance.