Hours of Service & ELDs: The Basics Every Carrier Should Know

Hours of service (HOS) is where compliance meets the clock — and where small misunderstandings turn into violations and out-of-service orders. The rules are detailed, but the core is learnable in an afternoon. This guide covers the HOS limits property-carrying drivers live by, how electronic logging devices (ELDs) fit in, and the exceptions worth knowing. The governing regulation is 49 CFR Part 395.

The core HOS limits (property-carrying drivers)

• 11-hour driving limit — drive a maximum of 11 hours after 10 consecutive hours off duty.
• 14-hour window — you can’t drive beyond the 14th consecutive hour after coming on duty (off-duty time doesn’t extend it).
• 30-minute break — required after 8 cumulative hours of driving without a 30-minute interruption.
• 60/70-hour limit — no driving after 60 hours on duty in 7 days, or 70 hours in 8 days (depending on whether you operate every day of the week).
• 34-hour restart — take 34+ consecutive hours off to reset your 60/70-hour clock.

Key takeaway: The 14-hour rule is the one drivers misjudge most. It’s a clock that doesn’t stop — a long lunch eats into your drive time because the window keeps running.

The sleeper-berth provision

Drivers can split required off-duty time using the sleeper berth. The qualifying splits are 7/3 or 8/2 — one period of at least 7 (or 8) hours in the sleeper berth, paired with another of at least 2 (or 3) hours off duty, that together add up to 10. Neither qualifying period counts against the 14-hour window when paired correctly.

What the ELD mandate requires

Since the ELD mandate, most drivers required to keep records of duty status must use a registered electronic logging device that automatically records driving time. Key points:

• The device must be on FMCSA’s registered ELD list and meet the technical spec in Part 395 Subpart B.
• Drivers must be able to produce and transfer logs at roadside.
• Edits and annotations are allowed, but original records can’t be erased — every change leaves a trail.
• Unidentified driving time must be reviewed and assigned, not ignored.

Common HOS / ELD violations

Violation	Why it happens
Driving beyond the 14-hour window	Treating off-duty time as a pause on the clock
Missing 30-minute break	Losing track of the 8-hour driving counter
Form & manner / log errors	Incomplete annotations, missing supporting docs
Using an unregistered/revoked ELD	Device removed from FMCSA’s list and not replaced
Unassigned driving time	Movement recorded with no driver logged in

Key exceptions worth knowing

• Short-haul exception — drivers operating within a 150 air-mile radius and returning to the same work-reporting location within 14 hours may be exempt from ELD use and detailed logs (with recordkeeping conditions).
• Adverse driving conditions — up to 2 extra hours in unexpected conditions.
• Personal conveyance & yard moves — special duty statuses with specific rules.
• Pre-2000 engine / driveaway-towaway — limited ELD exemptions.

Each exception has conditions — confirm the specifics in Part 395 and FMCSA’s HOS resources before relying on one.

Why HOS discipline protects more than your logs

Clean HOS data keeps you out of the HOS Compliance BASIC in CSA, reduces fatigue-related crash risk, and prevents the roadside out-of-service orders that wreck a delivery schedule. It also makes audits painless — auditors lean heavily on log accuracy and supporting documents.

How Fleetive helps

Fleetive isn’t your ELD, but it keeps the records around it organized — driver files, supporting documents, and the compliance dashboard that ties HOS discipline to the rest of your safety profile. Pair your ELD with Fleetive and the back-office side of HOS — recordkeeping, audit prep, driver status — stays clean.

Tighten up your compliance system end to end. Start a free trial or follow the Quick Start Guide.