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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:

  1. 10 consecutive hours off duty.
  2. 10 consecutive hours in the sleeper berth.
  3. A consecutive combination of berth and off-duty time totaling 10 hours — say 6 in the berth then 4 off duty, back to back.
  4. 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).
  5. 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:

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 split7/3 split
Longer period8+ consecutive hours, sleeper berth only7+ consecutive hours, sleeper berth only
Shorter period2+ hours, berth / off duty / combo3+ hours, berth / off duty / combo (to reach 10)
OrderEither — recalculation anchors to whichever came first
14-hour windowNeither break counts, once both are complete
70-hour clockUntouched

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

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Rule basis: 49 CFR 395.1(g)(1), 49 CFR 393.76 via eCFR; 2020 HOS Final Rule effective September 29, 2020.