Most truck crashes are not caused by bad luck. They are caused by a small list of recurring decisions, and once you know what to look for, the pattern becomes obvious.

I have tried commercial vehicle cases in California for years. The defense story is almost always the same in the first phone call: the driver did everything right, the other vehicle came out of nowhere, the company has a perfect safety record. The actual evidence usually tells a different story. Here are the causes I see most often, and what each one means if you or a family member was hurt.

Fatigue and hours of service violations

Federal law caps commercial drivers at 11 hours of driving in a 14 hour duty period, with a 10 hour off duty break before the next shift. The Federal Motor Carrier Safety Administration enforces this through electronic logging devices that sit in the cab. The rule exists because driving while exhausted is roughly as dangerous as driving drunk.

The trouble is the rules only work if the data is honest. Drivers under pressure to make a delivery falsify logs. Dispatchers nudge them to push through. Some carriers run two sets of books. When we subpoena ELD data along with cell phone records and fuel receipts, the discrepancies show up fast.

Improperly loaded or unsecured cargo

A trailer that is loaded wrong handles differently than the driver expects. Top heavy loads roll on offramps. Shifted cargo causes jackknifes on the grade coming down from the Grapevine. Spilled loads block lanes and cause secondary collisions. The Federal Motor Carrier Safety Regulations have specific cargo securement standards, and when those are violated, the loading company can be a defendant alongside the carrier. We discuss how that kind of evidence is preserved and used in how evidence impacts personal injury cases.

Mechanical failure

Brake failures and tire blowouts are not random. They are usually traceable to deferred maintenance. Federal regulations require pre trip inspections and regular maintenance intervals. When we get the maintenance records, we often find a history of complaints the carrier ignored. Sometimes we find no records at all, which is its own admission.

Inadequate training and unsafe hiring

Some of the worst trucking cases involve drivers the carrier should never have hired. Suspended licenses, prior crashes, failed drug tests, lack of endorsements for the equipment they were assigned to drive. The driver qualification file tells the story. Negligent hiring and negligent retention claims often carry more value than the driver negligence claim itself because they go directly to the carrier's own decision making.

Distracted driving

The same problem that plagues passenger cars is worse in commercial vehicles, where the driver may have a dispatch tablet, a navigation system, a phone, and a CB radio all competing for attention. Cell phone records and infotainment data can show exactly what the driver was doing at the moment of impact.

Why the cause matters for your case

The reason any of this matters is that California's pure comparative fault rule lets us spread liability across multiple defendants. A truck case is rarely a one defendant case. The driver, the motor carrier, the trailer owner, the broker, the shipper, the maintenance company, sometimes a parts manufacturer. Each defendant brings a separate insurance policy. That is how seven and eight figure recoveries get assembled in commercial vehicle cases.

If you are reading this in the days after a truck collision, two things matter most. Time is short, because evidence can disappear quickly, and California law limits how long you have to file. We cover those deadlines in detail in our piece on California's statute of limitations for injury claims. The other piece worth understanding is what kinds of damages you can actually recover, which we lay out in what compensation injury victims can recover.

The mechanics of the claim itself, from the day you call a lawyer to the day a check is delivered, are covered in how personal injury claims work.

For a free review of a California truck accident case, contact the Frances Dunham Law trucking team. You can speak with Allan Movagar through our contact page.