What 393.76B-SB means in plain language
When you're cited for 393.76B-SB, an inspector has found that your sleeper berth does not meet federal equipment and dimension requirements. This is a defect inspection violation—meaning your sleeper compartment itself has a structural or equipment problem, not necessarily that you were sleeping improperly or driving fatigued.
Common reasons include:
- Mattress, bunk frame, or support structure that's broken, missing, or unstable
- Interior dimensions that are undersized (sleeper berths must meet specific width and length minimums)
- Mounting brackets, hinges, or attachment hardware that's damaged or loose
- Flooring or wall panels inside the sleeper that create a safety hazard
- Missing or broken bedding or padding required for comfort and safety
This is a maintenance citation. Unlike some serious violations, it doesn't typically result in being placed out of service on the spot, but it does signal that your vehicle needs repair before you can legally operate it as a sleeper-equipped unit.
What our enforcement data actually shows
Across our 13 million+ inspection records, 393.76B-SB is a rare violation. We've recorded 17 all-time citations, with 13 in the last 12 months and 3 in the last 90 days. The code ranks #2011 out of 3,036 FMCSR codes by citation volume—making it well below the national enforcement baseline.
More importantly: none of the 17 citations resulted in an out-of-service order. The 0.0% OOS rate for this code is dramatically lower than the all-FMCSR average of 31.4%. This means inspectors are treating sleeper berth defects as repair-at-your-convenience issues in nearly every case, not emergency safety pulls.
The last 12 months show stable low-level enforcement: citations ranged from 1 to 3 per month, with no seasonal spike. The most recent citations were in February 2026 (2 citations) and January 2026 (2 citations).
Who gets cited most
Our data shows citations concentrated across six states over the last 180 days: DC, MS, NY, PA, US (likely a multi-state or federally-flagged inspection), and WY. Each recorded exactly 1 citation with a 0.0% OOS rate.
By carrier, Turistica Merlo Inc (USDOT 3277071) leads with 2 all-time citations; nine other carriers have 1 each. No single carrier shows a pattern of repeated violations for this code.
Vehicle makes cited most frequently include Freightliner (5 citations), Dodge (3), and Kaufman and Ram trailers (2 each). This suggests sleeper berth defects occur across a range of equipment ages and manufacturers, so the issue is not brand-specific.
How severe is this compared to similar codes
Compare 393.76B-SB to other Vehicle Maintenance violations in our peer category:
- 393.9(a) — Inoperable required lamps: 660,737 citations, 15.4% OOS rate
- 396.3(a)(1) — Inspection/repair/maintenance (general): 236,919 citations, 45.3% OOS rate
- 393.78 — Windshield condition defective: 157,894 citations, 0.3% OOS rate
393.76B-SB sits at the bottom of enforcement volume and shares the near-zero OOS rate with windshield defects (0.3%). By contrast, general maintenance citations (396.3) carry a 45.3% OOS rate, and inoperable lamps trigger an out-of-service order roughly 1 in 6 times. Sleeper berth equipment defects are treated as lower-urgency maintenance issues compared to brake, lighting, or general inspection violations.
How to avoid it
Your pre-trip inspection should include a dedicated sleeper berth walk-through:
- Check the bunk frame and supports. Look for cracks, rust, bent metal, or bolts that are loose or missing. Press down on the mattress and frame to confirm they're solid and don't move or sag.
- Verify the mattress and padding. Ensure the mattress is secured in place, not torn or compressed to the point where the frame is exposed, and that any built-in padding or bedding meets the required standard.
- Inspect interior dimensions. Measure the width and length of the sleeping surface to confirm they meet federal minimum standards (typically 6 feet 8 inches long and 2 feet 6 inches wide, but check your vehicle's compliance plate).
- Check all attachment points. Doors, hinges, latches, and any clips or straps should operate smoothly and hold securely. Loose or missing hardware creates both a safety hazard and a citation risk.
- Look for floor and wall damage. Cracked flooring, missing wall panels, or sharp edges that could damage cargo or create an unsafe environment should be repaired before your next run.
- Test ventilation and access. The sleeper must have operable ventilation (window, vent, or fan) and safe entry/exit. Document that these work.
If you find a defect during pre-trip, do not defer the repair. Report it to your fleet maintenance department immediately—a sleeper berth violation will not go unnoticed at scale, and repairing it now prevents a citation and keeps your vehicle legal.