Federal hours-of-service rules limit how long a truck driver can drive. When a fatigued driver causes a Missouri crash, the logs often decide the claim.
Truck drivers can feel a lot of pressure at their job. It’s not just about being safe on the road, but since some are paid per mile driven, they may feel they need to get to their destination fast, deliver the goods on time, or even earlier than expected. This is one reason driver fatigue in the trucking industry is such a big problem. Drivers may ignore what their bodies are telling them just to beat the clock and reach their destination. Unfortunately, this scenario can end in a serious crash, and the person in the smaller vehicle pays the price.
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Hours on the Road
Federal hours-of-service rules, found at 49 CFR Part 395, limit a truck driver to 11 hours of driving, but only under certain conditions. The FMCSA recognizes that an hourly limit alone does not make a driver well rested, so the rules work together:
- The 11-hour driving limit applies only after 10 consecutive hours off duty.
- All driving must happen within a 14-hour window that starts when the driver comes on duty. Loading, fueling, and inspections count against the window even though they are not driving.
- A 30-minute break is required after 8 cumulative hours of driving without one.
- Weekly limits apply: no driving after 60 on-duty hours in 7 days or 70 hours in 8 days, depending on the carrier’s schedule. Taking 34 consecutive hours off resets the count.
Since 2019, nearly all interstate carriers have had to record this time on an electronic logging device that connects to the truck’s engine. Missouri also applies the federal safety rules to carriers that operate only inside the state (RSMo 307.400), so a local delivery truck in St. Louis County is generally held to the same limits as a cross-country rig.
One more rule matters as much as the clock. Under 49 CFR 392.3, a driver may not operate a commercial vehicle while fatigued, even if the hours are technically within limits. A driver who stayed within 11 hours but didn’t sleep is still in violation.
Those Who Ignore the Hours-of-Service Rules
Those who violate the hours-of-service rules face penalties for each rule they broke, and serious violations can put a driver out of service on the spot. State highway patrol officers review drivers’ logs at weigh stations and roadside inspections, and the FMCSA audits carriers’ records.
These penalties apply when the driver is found violating the regulations, and nothing else happened. If a crash occurred, the same records become evidence in the injury claim.
How a Violation Is Proven After a Crash
The electronic log is the starting point, not the whole answer. A fatigued driver’s log can look clean if the driver recorded time as off-duty or personal conveyance when the truck was actually moving. The way to test it is to compare the log against records that do not depend on the driver:
- Fuel receipts, toll records and weigh station scans, each with a timestamp and location
- Bills of lading and delivery receipts showing when freight was picked up and dropped
- Dispatch messages, GPS pings and in-cab camera footage
- The driver’s phone records
- The truck’s engine control module, which stores speed and braking data from the final seconds before impact
Carriers are only required to keep logs and supporting documents for six months, and routine data overwriting can happen faster than that. A preservation letter sent to the carrier in the first days after a crash is the step that keeps this evidence available. That is one reason to talk to a St. Louis truck accident attorney early rather than after the adjuster has made an offer. (314) 361-4242 – Free consultation.
What a Violation Means for the Claim
In a Missouri injury claim, a hours-of-service violation does not win the case by itself, but it carries weight in three ways.
- First, a safety regulation violation is evidence of negligence. A jury can consider that the driver broke a rule written specifically to prevent the kind of crash that happened.
- Second, the violation often reaches the company. Under the regulations, a carrier may not require or permit a driver to exceed the limits. Dispatch records that show a schedule no driver could meet legally, or a pattern of log violations the company ignored, support a claim against the carrier directly, not only through the driver. Our post on liability in a Missouri truck accident explains how those claims are structured.
- Third, fatigue affects what the crash looks like. An awake, alert driver brakes, swerves, and leaves marks. A fatigued driver often does none of those things, and the physical evidence at the scene, combined with the log, tells that story.
Missouri uses pure comparative fault, so any share of fault assigned to the injured driver reduces the recovery but does not bar it. A personal injury claim generally must be filed within five years of the crash, and a wrongful death claim within three. The evidence described above does not wait that long, so the claim should not either.
What to Expect When You Reach Out
Since 1998, our firm has handled motor vehicle injury cases only, from a locally owned office in Clayton. If the injuries are serious, you will work directly with Attorney Christopher Hoffmann. We send the preservation demand, obtain logs and supporting records, and identify every applicable policy, including the carrier’s commercial coverage. The consultation is free, and there is no fee unless we recover compensation.
Call us at (314) 361-4242 or fill out our online contact form.
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