Can a truck driver's logbook prove they were driving too many hours before my crash?

KEY TAKEAWAYS

Federal rules cap how long a commercial truck driver can drive and work without rest, and most drivers must log their hours electronically through an ELD that timestamps every change in duty status. When those records show a driver exceeded the driving or on-duty limits, or falsified entries to hide it, that violation can serve as strong evidence of negligence in a Texas truck accident claim. Because carriers are only required to keep these records for six months, requesting them quickly is essential.

Fatigue is one of the most common, and most provable, causes of serious truck crashes. Unlike distraction or impairment, which often rely on witness accounts or after-the-fact toxicology, a fatigue-related hours-of-service violation frequently leaves a paper trail — or, these days, a digital one — that can be checked against a clear federal standard.

Truck accident cases are unique because they are governed by a strict set of federal regulations designed to keep fatigued drivers off the road. At SJ Injury Attorneys, our experienced truck accident lawyers understand the intricacies of these laws and know exactly where to look for evidence of negligence.

What Are the Federal Hours-of-Service Limits?

The Federal Motor Carrier Safety Administration sets specific limits on how long a commercial truck driver may drive and work. For most property-carrying drivers, the core rules are:

• The 11-hour driving limit. A driver may drive a maximum of 11 hours after 10 consecutive hours off duty.
• The 14-hour window. A driver may not drive beyond the 14th consecutive hour after coming on duty, and this window keeps running through loading, fueling, and other non-driving tasks common in a construction zone truck crash.
• The 30-minute break requirement. A driver must take a break of at least 30 minutes after eight cumulative hours of driving.
• The 60/70-hour limit. A driver may not drive after accumulating 60 hours on duty in seven consecutive days, or 70 hours in eight consecutive days, unless they've taken a qualifying 34-hour restart.

A driver who was behind schedule, or whose dispatcher pushed an unrealistic delivery window because of the industry's ongoing driver shortage, has an obvious incentive to bend these limits. A logbook or electronic record is what lets you check whether they did.

How Do Logbooks and ELDs Record a Driver's Hours?

Most commercial drivers are now required to use an electronic logging device (ELD) that connects to the truck's engine and automatically records driving time, along with GPS location at each change in duty status. The ELD data creates a timestamped record showing exactly when a driver started driving, when they stopped, and how long they spent in each duty status throughout the day. A smaller number of drivers still qualify for exceptions that allow paper logs instead, such as short-haul drivers who stay within a limited radius of their home terminal, but the underlying duty-status categories they must record are the same, and the same records often get pulled alongside engine and black box data after a rear-end crash.

What Does a Violation Actually Look Like in the Records?

When ELD or logbook data is compared against dispatch records, fuel receipts, and toll or GPS data, a few patterns tend to stand out:

1. Driving time that exceeds the 11-hour or 14-hour limits on the day of the crash
2. Missing or unusually long gaps in the record that suggest a driver switched to "off duty" or "sleeper berth" status without actually resting
3. A pattern of 60/70-hour violations in the days leading up to the crash, suggesting cumulative fatigue rather than a single bad day
4. Discrepancies between the ELD data and other records, such as fuel purchases or toll crossings that don't match the logged duty status, which can indicate falsified entries

Falsifying a logbook is itself a serious federal violation, and a pattern of discrepancies can be even more damaging to a trucking company's defense than a single documented hours-of-service violation, since it suggests the company or driver knew the record wasn't accurate.

How Are These Records Obtained After a Texas Crash?

A trucking company isn't obligated to hand over its ELD data voluntarily, and it has no independent reason to preserve records beyond the six-month retention period federal rules require. That's why an attorney typically sends a formal preservation request soon after being retained, specifically identifying the ELD and paper log records that must be kept, and follows up with a formal request or subpoena for the underlying data rather than relying on a carrier's own summary of what the logs show. Cross-checking the ELD export against dispatch communications, bills of lading, and fuel or toll records is what usually reveals whether the official log tells the whole story.

Why Does an Hours-of-Service Violation Matter to Your Claim?

An hours-of-service violation doesn't just show that a driver broke a federal rule. It goes directly to whether the driver was fit to be behind the wheel at all, which can support a negligence claim against both the driver and the trucking company that dispatched them on a schedule that all but guaranteed a violation. Carriers that pressure drivers to skip rest to hit delivery windows can face liability for their own scheduling practices, separate from whatever the driver did behind the wheel.

A logbook is a small, unglamorous document, but in a serious truck accident case it can be the piece of evidence that turns a disputed liability argument into a documented violation of federal law.