Somebody Was Supposed to Check Those Brakes

A loaded semi can weigh many times what a passenger car weighs, and the only thing that turns all that momentum into a stop is a set of brakes that someone had a legal duty to inspect, adjust, and repair. When a truck can't stop in time, the driver usually says the same thing: the car in front of him stopped suddenly, or the brakes just gave out. Either way, my next question is about paper. Who was supposed to look at those brakes, when did they last look, and what did they write down?

Federal trucking rules create a paper trail for brakes that ordinary cars never have, and in a brake case that trail often decides who pays.

How brake problems actually show up on a semi

Most heavy trucks run air brakes. When the driver presses the pedal, air pushes a rod out of a brake chamber at each wheel, and that rod turns a slack adjuster and cam that force the brake shoes against the drum. As the linings wear, the rod has to travel farther to do the same job. Past a certain point, the brake at that wheel delivers less force than it should, or almost none.

49 CFR 393.47(e) sets maximum pushrod stroke for each chamber type, and the periodic inspection standards in Appendix A to Part 396 are blunt: "Any brake stroke exceeding the readjustment limit will be rejected." Inspectors and mechanics call this a brake "out of adjustment." One out-of-adjustment brake on an eighteen-wheeler may not feel like much to the driver. Several of them add up to a truck that needs far more road to stop than the driver expects.

The second pattern is heat. On a long downgrade, or after repeated hard stops, drums and linings can get hot enough to lose grip. Some of that is driving technique, such as riding the brakes instead of using a lower gear. But section 393.47(a) also requires brake components to be "maintained to prevent excessive fading and grabbing," so a truck that fades on an ordinary hill raises a maintenance question too.

Worn linings, air leaks, and damaged trailer air lines round out the list. The rule behind all of these is short. Under 49 CFR 393.48(a), "all brakes with which a motor vehicle is equipped must at all times be capable of operating," subject to narrow exceptions such as a raised lift axle. And 393.40(a) requires brakes "adequate to stop and hold the vehicle or combination of motor vehicles."

The inspection chain: four layers of paper

Brakes rarely go bad overnight. The federal rules require several different people to look at the truck at different intervals, and each look is supposed to leave a record.

1. The driver, before and after each day. Under 49 CFR 392.7(a), no commercial truck may be driven unless the driver "is satisfied" that the service brakes, "including trailer brake connections," the parking brake and other listed parts are "in good working order." Section 396.13 adds that before driving, the driver must review the last inspection report if one was required and sign it, acknowledging that any needed repairs were certified.

At the end of each day's work, 49 CFR 396.11 requires a written driver vehicle inspection report, usually called a DVIR, covering the service brakes and trailer brake connections, the parking brake, and other parts. There's a catch that matters in litigation. A driver doesn't have to prepare the report if no defect was found or reported to him. So a stack of missing reports might mean "nothing was wrong," or it might mean nobody was looking. The truck itself usually tells you which.

2. The carrier, when a defect is written up. Once a driver lists a defect that could affect safety, the carrier must repair it before the truck goes back out, and must certify on the report that it was fixed or that repair "is unnecessary." That certification line is one of the first things I read. A brake complaint signed off as "repair unnecessary" two days before a crash tells a story.

3. The annual inspection. Under 49 CFR 396.17, every commercial vehicle must pass a periodic inspection at least once in the preceding 12 months, with documentation on the vehicle. The rule spells out that in a tractor-semitrailer combination, "the tractor, semitrailer, and the full trailer" must each be inspected. The person doing it has to meet the qualifications in section 396.19, and the inspector's report has to identify who did the inspection and which components failed.

4. Whoever touches the brakes. Section 396.25 says a carrier may not let any employee be "responsible for the inspection, maintenance, service or repairs of any brakes" unless that person meets federal brake-inspector qualifications through training, certification, or at least a year of brake experience. The carrier must keep proof of those qualifications. If the person who adjusted the brakes last month had no qualifications on file, that is a separate failure from the bad brake itself.

Over all of it sits the general duty in 49 CFR 396.3(a): every motor carrier must "systematically inspect, repair, and maintain" the vehicles under its control, or cause that to be done. And section 396.7(a) forbids operating a vehicle "in such a condition as to likely cause an accident or a breakdown."

Roadside and post-crash inspections

Trucks also get inspected by enforcement officers on the road. When an authorized inspector finds a condition that "would likely cause an accident or a breakdown," 49 CFR 396.9(c) provides for the vehicle to be declared and marked "out-of-service," and it may not be driven until the listed repairs are done. Brake adjustment is a common reason. The driver must hand the inspection report to the carrier, and within 15 days the carrier must certify that the violations were corrected and keep a copy for 12 months.

After a serious truck crash, a trooper or commercial vehicle enforcement officer often inspects the truck, measuring brake stroke and looking for defects. That report, made by a neutral officer before anyone could fix anything, is some of the best evidence there is.

FMCSA also publishes a carrier's history. Percentile scores for property carriers are no longer shown publicly, but inspection, crash and registration data remain public. A carrier with a long list of brake violations before the crash has a hard time calling the crash a fluke.

Who answers for bad brakes

In a brake case, I'm usually looking at more than the driver:

• The motor carrier. It owns the duty to systematically inspect and maintain, to repair written-up defects, and to use qualified brake inspectors.
• The trailer owner or lessor. The tractor and trailer are often owned by different companies. The carrier's maintenance record must name "the person furnishing the vehicle" when the carrier doesn't own it. A leasing company, or an intermodal equipment provider that tenders chassis and containers, may carry its own inspection and repair duties under Part 396.
• The maintenance shop. Carriers often hire outside garages to do annual inspections and brake work, and section 396.17 allows a commercial garage to do the annual inspection as the carrier's agent. A shop that adjusted the brakes wrong or certified a failing component can be a defendant.
• The shipper, occasionally. If an overloaded or badly loaded trailer contributed to the stopping problem, the loading company may share responsibility. That's the exception, not the rule.

I cover the larger map of truck defendants in my post on trucking company and broker liability, and tire failures have their own post on semi tire blowouts and maintenance liability.

The clock on the records

Here are the minimum retention periods the regulations set:

• Driver vehicle inspection reports and repair certifications: three months (396.11).
• Roadside inspection reports: 12 months from the inspection (396.9).
• Maintenance, inspection and repair records: 1 year, and 6 months after the vehicle leaves the carrier's control (396.3).
• Annual inspection reports: fourteen months (396.21).
• Proof of inspector and brake-inspector qualifications: while the person does the work, plus one year (396.19, 396.25).

Three months goes fast when someone is in the hospital, and a DVIR complaining about soft brakes can be lawfully discarded before the family calls a lawyer. That's why my evidence preservation page treats the maintenance file as a category the preservation letter has to name, and why I want the truck itself held for inspection before any repair. The carrier's people are usually on scene early, as I describe in my post on trucking rapid response teams.

Hypothetical one: the write-up nobody fixed

This is a made-up example, not a real case. A tractor-trailer rear-ends a minivan stopped at a light on a four-lane highway in eastern Nebraska. The driver says the brakes felt "soft." The trooper's post-crash inspection finds four trailer brakes beyond the readjustment limit. Discovery shows a DVIR from six days earlier noting "trailer brakes weak," with a carrier certification that repair was unnecessary, signed by a dispatcher with no brake qualifications on file.

That case is no longer only about a driver who followed too closely. It's about a company that was told, in writing, and chose not to look.

Hypothetical two: two owners, one trailer

Also made up. A semi can't slow in time at the bottom of a long grade and strikes a pickup. The tractor belongs to the carrier, but the trailer is leased from a separate company that agreed to maintain it. The carrier points at the lessor. The lessor points at the carrier's drivers for never reporting a problem.

The lease's maintenance terms, the trailer's annual inspection report, repair invoices and the carrier's DVIRs sort it out, and both companies may share responsibility.

How the defense argues "the brakes were fine"

The carrier's lawyers usually lead with one of these:

• "Your client stopped short." The classic defense. But a truck is expected to leave room for traffic that stops, and properly adjusted brakes need less of that room. The engine module's braking data helps test the claim.
• "The brakes passed inspection." An annual inspection can be up to 12 months old. Brakes go out of adjustment between inspections, which is exactly why the daily driver checks exist.
• "The crash damaged the brakes." Sometimes true. A qualified expert can usually distinguish crash damage from long-term wear, a sticking adjuster or an old leak, but only if the truck is preserved.
• "No defect was ever reported." Then I want to know whether anyone was looking, and whether roadside inspection history shows brake violations the company kept seeing.

Mistakes that hurt brake cases

• Waiting. The shortest retention clock is three months, and the truck may be repaired much sooner.
• Forgetting the trailer. It may belong to someone else, with its own records and insurer.
• Assuming the crash report covers it. It may say nothing about brakes even when the post-crash inspection found problems.
• Giving the trucking insurer a recorded statement. Anything you say about how fast you stopped will come back as the "stopped short" defense.
• Missing the filing deadline. Deadlines depend on the state and the type of claim; my statute of limitations guide explains them.

Why people hurt by a semi call me

A brake-failure case is won with mechanics' records, inspection reports, and experts, not with the driver's story. I'm a zealous, trial-tested advocate, and I build truck cases from the carrier's own paperwork out. My clients have recovered more than $24 million, including a $5.4 million result, and they've left many five-star reviews about how I fought for them. Omaha readers voted my firm Best of Omaha for personal injury law in 2025 and again in 2026.

If a semi that couldn't stop hurt you or your family in Nebraska or Iowa, don't let the inspection file age out. Learn more on my Nebraska truck accident lawyer page, call (402) 378-9208, or reach me here. Talking with me is free, and I only get paid if I recover money for you.

Frequently asked questions

Can I find out whether the trucking company had brake violations before my crash?

Partly. FMCSA's public data includes a carrier's inspection and crash history, including roadside violations. Percentile scores for property carriers are no longer shown to the public, and the company's internal maintenance records only come out through a preservation demand and discovery.

If the driver never filed a defect report, does that mean the brakes were fine?

Not necessarily. Federal rules don't require a driver to write a report when no defect was found or reported to him. A missing report may mean the driver never looked closely. The post-crash inspection and the truck itself are the better test.

Can a company that only owned the trailer be responsible?

Yes, it can be. When a trailer is leased or tendered by a separate company, that company may have its own inspection and repair duties, and a shop that maintained the trailer can share fault if its work fell short.

Your Attorney

Frank Younes

Every page on this site is written by Frank Younes, a Nebraska trial attorney with a published record of verdicts and settlements, selection to the National Trial Lawyers Top 100, and a practice that covers every county in Nebraska and Iowa. No case is handed to an associate — the lawyer you read here is the lawyer who works your case.

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