While brake issues aren’t all that common in smaller vehicles in Missouri, they show up far more often when a crash involves a semi-truck.
Federal data shows that brake problems are involved in nearly 29% of all large truck accidents. That includes worn-out pads, broken components, or full-on failure when the brakes are under pressure.
This happens more often in trucks because their systems are different. Instead of hydraulic brakes like a car, most use air brakes, which are more complex and involve several moving parts. If any one piece isn’t working right—or if the system isn’t set up or appropriately maintained—the brakes can take too long to respond.
And since a loaded semi can weigh 30 times more than a car, that delay in stopping can quickly turn into a serious crash that could’ve been prevented.
Reasons Why Brakes Fail on Semi-Trucks
Brake failure in semi-trucks is more common than most drivers realize—and it’s often preventable. Unlike passenger vehicles, large trucks rely on air brake systems that demand constant maintenance and proper use. When something in that system breaks down or gets overlooked, the results can be deadly. Below are some of the most common reasons why truck brakes fail.
Poor Maintenance
Federal rules require regular maintenance, but not all trucking companies follow them. Skipping inspections or delaying repairs can let small brake problems turn into serious risks.
Worn or Damaged Parts
Brake pads, drums, and other parts wear down over time. If they’re not replaced on schedule, braking performance drops off quickly, increasing the chance of failure.
Brake Imbalance
If some brakes engage harder or faster than others, the truck may pull to one side or stop unevenly. That imbalance can cause the driver to lose control.
Overheating from Overuse
Brake systems can overheat, especially on long hills or in heavy traffic. When brakes get too hot, they lose stopping power. Drivers should use lower gears to take pressure off the brakes.
Air System Failures
Since trucks use compressed air instead of hydraulic fluid, any issue with the air compressor, lines, or pressure can keep the brakes from working. Leaks or broken parts in the air system are a common cause of brake failure.
Corrosion and Rust
Brake lines and components are exposed to water, salt, and road debris. Corrosion weakens these parts over time, often without obvious warning signs.
Suspension and Load Problems
A damaged suspension or an overloaded trailer can strain the brakes, making them work harder than they should. That extra stress can cause parts to wear faster or fail under pressure.
Manufacturing Defects
Some brake systems come with flaws from the factory. If a defective part gives out on the road, the driver may not have time to react.
Have you been injured in an brake failure accident involving a truck? Our award-winning Missouri truck accident lawyers can help. Call 314.207.9996 for a free initial consultation and case evaluation.
Brake Safety Requirements
Commercial trucks operating in Missouri must follow strict federal safety rules when it comes to brake systems. The Federal Motor Carrier Safety Administration (FMCSA) outlines these requirements under Section 5.1.1 of its safety regulations. These rules are in place to prevent crashes caused by brake failure and to make sure trucks stay in safe working condition on the road.
Truck drivers are required to inspect their brakes every day before starting a trip. This includes checking for air leaks, worn brake pads or linings, and damage to the drums or rotors. If anything looks off—even something minor—it has to be fixed before the truck can continue operating.
In addition to daily checks, the FMCSA requires regular maintenance to keep brake systems working properly. This includes adjusting brake components, replacing worn parts, and making sure everything is well-lubricated.
Every truck must also pass an annual brake inspection by a certified inspector. These detailed reviews help catch problems that may not be obvious during daily checks. On top of that, trucking companies must keep written records of all inspections, repairs, and maintenance related to the brake system.
Who Can Be Held Liable For a Truck Brake Failure Accident in Missouri?
When a truck crash in Missouri is linked to brake failure, multiple parties could be legally responsible. Liability depends on who had a role in causing or failing to prevent the problem. After a full investigation, responsibility may fall on one or more of the following:
- The truck driver: If they failed to perform required brake inspections or ignored signs of a problem.
- The trucking company: For skipping maintenance, hiring unqualified drivers, or pressuring drivers to meet unsafe deadlines.
- The truck maintenance provider: If a third-party mechanic overlooked needed repairs or did poor-quality work.
- The brake or truck manufacturer: When a design or manufacturing defect in the braking system directly caused the failure.
- The shipping company: If the cargo was overloaded or unevenly packed, which can affect braking and increase wear.
Each of these parties has a legal duty to help ensure the truck is safe to operate. Attorney Paul Beck can review the crash report, maintenance records, and inspection results to determine exactly who should be held accountable.
Signs That a Truck’s Brakes Are Near Failing
Recognizing the early signs of brake failure on a semi-truck is critical for avoiding serious accidents. These heavy vehicles rely on properly functioning air brakes, and even a small issue can quickly become dangerous.
Here are common signs that a truck’s brakes may be close to failing:
- Loud screeching or thumping noises: These sounds may signal worn components or poor contact between the brake system and tires.
- Lurching or jerking forward when braking: This can mean the brakes aren’t gripping evenly or have lost stopping power.
- Unusual acceleration on downhill grades: If a truck picks up speed going downhill instead of slowing, the air brake system could be failing.
- Hazard lights or horn warnings: Truck drivers may activate hazard lights or use the horn when they’re struggling to slow down safely.
If you see a truck displaying any of these signs, give it space and avoid passing until it stops completely.
Consult With Our Missouri Truck Accident Law Firm Today
If you were hurt in a crash involving a semi-truck, it’s important to work with a firm that understands how truck accident cases work in Missouri. At Beck & Beck Missouri Car Accident Lawyers, we focus on helping accident victims get the support they need—especially when brake failure or mechanical problems are involved.
We know what to look for, how to investigate these cases, and how to hold the right parties accountable. If you’re dealing with medical bills, lost income, or long-term injuries, don’t wait. Contact us today for a free consultation and learn how we can help.
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