Every commercial trucking company runs under a federal rulebook most drivers on the road have never heard of: the Federal Motor Carrier Safety Regulations. They are not suggestions. They are the safety rules a careful carrier is required to follow, and when a trucking company breaks them and someone is hurt, those rules become the backbone of the case.
Reading that rulebook against the records a carrier was required to keep is how a truck case is built. It is the same approach I take to forensic evidence in every case: hold the other side to the written standard.
The rules are the standard of care
The regulations, found in Title 49 of the Code of Federal Regulations, set out in detail how commercial trucking is supposed to operate safely. They tell a carrier how rested its drivers must be, who is fit to drive, how a truck must be inspected and repaired, and how a load must be secured. Because they define what a reasonably careful trucking company does, a violation is strong evidence of negligence. It is not automatic liability, but a documented breach that caused the crash is hard for the defense to explain away.
Federal trucking rules are dense, and holding a carrier to them takes a lawyer who will read the file, which is how I work. As an ACS-CHAL forensic lawyer-scientist who spent years defending DUI cases, I learned to take a body of technical regulation and evidence apart piece by piece, and I bring that same eye to the hours-of-service logs, the maintenance records, and the driver qualification file behind an FMCSA violation. The proof of a broken rule can be gone within months, so I move fast to preserve the electronic data and the paper trail. I represent injured people, not the trucking companies, and as a trial lawyer who came up as a public defender and cross-examined witnesses constantly, I am willing to try the case, which is often what moves an insurer to pay fair value. I handle your case personally, from the first call through trial. Learn more about my background.
Why the rulebook works like a malpractice standard
It helps to see why these regulations are such a powerful tool, and the closest comparison is a medical malpractice case. In malpractice, the case turns on a standard of care, what a careful professional was required to do, and a violation of it is the breach that proves negligence. Trucking has its own written standard of care in the Federal Motor Carrier Safety Regulations, which spell out in detail what carriers and drivers must do: how a driver must be qualified, how many hours they may drive and how that is logged, how the equipment must be inspected and maintained, and how drivers must be tested for drugs and alcohol. When one of those rules is broken, it is a specific, documented breach of a duty the industry itself acknowledges, not a vague failure of carefulness, and that makes it far easier for a jury to understand and far harder for the defense to wave away. Building a truck case is, in large part, matching what the rules required against what the carrier and driver did, and letting the gap tell the story.
The rules that decide most cases
A handful of these regulations come up again and again. Each one matches a record the carrier was required to create and keep, which is exactly why preserving those records early matters so much.
| The rule | What it requires, and what a breach shows |
|---|---|
| Hours of service (49 C.F.R. 395) | A driver may drive at most 11 hours within a 14-hour window, must break after 8 hours, and is capped at 60 to 70 hours a week. A breach points to a fatigued driver. |
| Driver qualification (49 C.F.R. 391) | Screening, a clean enough record, medical fitness, and the right license. A breach points to a driver who should never have been behind the wheel. |
| Drug and alcohol testing (49 C.F.R. 382) | Pre-employment, random, and post-crash testing. A breach points to an impaired driver, or a carrier that did not want to know. |
| Inspection and maintenance (49 C.F.R. 396) | Systematic inspection and repair, daily inspection reports, and annual inspections. A breach points to a truck that should not have been on the road. |
| Cargo securement | Loads loaded and secured so they do not shift or spill. A breach points to a rollover or a lost load. |
Every rule here maps to records the carrier had to keep, which is how a violation is proven rather than argued.
Hours of service and fatigue
The rule that surfaces most often is hours of service. A property-carrying driver may drive no more than 11 hours after 10 hours off, may not drive past the 14th hour of a shift, must take a 30-minute break after 8 hours, and is capped at 60 hours in 7 days or 70 in 8. Since late 2017, most drivers must track this on an electronic logging device rather than a paper logbook, which makes the hours far harder to fake and far more useful as proof. The fatigue side of these cases is covered on driver fatigue and hours of service.
Turning a rule into proof
A regulation only helps if you can show it was broken, and that takes the carrier’s own records. The logs prove the hours, the driver qualification file proves the screening, the maintenance records prove the upkeep, and the testing records prove sobriety. Those documents are the case, which is why preserving them comes first, as I explain on evidence and the black box.
The deadline
For a crash on or after March 24, 2023, Florida gives you two years to sue under Fla. Stat. 95.11(5)(a). In a truck case the clock that matters most is shorter: the carrier only has to keep some logs and inspection records for a matter of months, so the real deadline for protecting the evidence is measured in weeks, not years.
The federal regulations are the closest thing a truck case has to a malpractice standard of care, and I use them exactly that way. I lay the specific rules a carrier and driver were required to follow next to what they did, on hours, on maintenance, on qualification, on testing, and I let the violations carry the case. I represent injured people, not trucking companies, and I hold a carrier to the written rules it agreed to run its business by, because those rules exist to keep people like you safe.
Common Questions
What are the FMCSA regulations?
They are the Federal Motor Carrier Safety Regulations, the federal rulebook that governs commercial trucking. They cover how many hours a driver may work, how a driver must be screened and trained, how trucks must be inspected and maintained, drug and alcohol testing, and how cargo must be secured. A trucking company in interstate commerce has to follow them.
Does breaking an FMCSA rule mean the trucking company is automatically liable?
Not automatically, but it is strong evidence of negligence. The regulations set the standard of care for a careful trucking company, so a clear violation, such as a driver over his hours or a truck with known brake defects, helps show the carrier or driver failed to act reasonably and that the failure caused the crash.
What rules get broken most often in truck crashes?
The most common are the hours-of-service limits that guard against fatigue, the driver-qualification rules that are supposed to keep unfit drivers off the road, the inspection and maintenance rules, and the drug and alcohol testing rules. Each maps to a record the carrier was required to keep, which is how a violation gets proven.
Do these federal rules apply to a local delivery truck?
Many of them do. The core safety regulations apply to commercial motor vehicles in interstate commerce, and Florida applies comparable safety rules to intrastate carriers. The exact rules depend on the truck, the cargo, and the route, which is one of the first things to sort out in a case.
How do you prove a regulation was violated?
Through the records the rules require the carrier to keep: the electronic logs for hours of service, the driver qualification file for screening, the inspection and maintenance records for the truck, and the testing records for drugs and alcohol. Getting those preserved before they are discarded is the whole game.
Related: Truck accidents overview, Driver fatigue and hours of service, Evidence and the black box, Who is liable, and About Rory Safir.
This page is general information about Florida and federal law governing truck crashes, not legal advice, and it does not create an attorney-client relationship. The governing authorities include the Federal Motor Carrier Safety Regulations at 49 C.F.R. Parts 382 (drug and alcohol testing), 391 (driver qualification), 392 (driving of commercial vehicles), 395 (hours of service), and 396 (inspection, repair, and maintenance), and Fla. Stat. 768.81 and 95.11(5)(a). Every case is different, and past results do not guarantee a similar outcome. The hiring of a lawyer is an important decision that should not be based solely on advertisements.
