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When a Car Slides Under a Truck: Understanding the Danger
Key Takeaways: An underride accident happens when a passenger vehicle slides partly or fully under a semi-trailer or large truck. These crashes are so deadly because the trailer bed sits at about windshield height, so the car’s crumple zones and airbags often never engage, and the passenger compartment can be crushed or sheared off. Federal rules require rear underride guards on most trailers but do not require side guards, and damaged or poorly kept guards can fail when hit. Survivors often face traumatic brain injuries, spinal cord injuries, and crushing chest injuries, and the truck driver, motor carrier, maintenance contractor, or guard maker may be responsible. Missouri generally allows five years to file personal injury negligence claims under MO § 516.120(4) and three years for wrongful death claims under MO § 537.100, though exceptions and shorter deadlines can apply. Acting quickly helps preserve key evidence like electronic logging data, maintenance records, and the trailer itself.
An underride accident happens when a passenger vehicle slides partly or completely beneath a semi-trailer or large truck during a crash. These crashes are so deadly because the trailer bed often sits at about the height of a car’s windshield. The trailer can crush or shear off the passenger compartment, and the car’s crumple zones and airbags may never work as they should. If you or someone you love was hurt in a crash like this on I-29, I-435, or Highway 169 through the Northland, this guide explains why these crashes cause such severe injuries and what Missouri law may offer families.
You do not have to sort through this alone. En Ley de lesiones de Northland, our team talks to you, not at you, and we keep you informed every step of the way. Call us at 816-400-4878 o contact us now to talk with a member of our team about what happened.
What Is an Underride Accident? How These Crashes Happen
In an underride accident, the size difference between the vehicles is the main danger. A typical sedan sits much lower than the bottom of a semi-trailer. When the two collide, the car’s hood can pass under the trailer frame, leaving the windshield, roof pillars, and the people inside to take the force of the impact. Federal safety data and legal research on underride crashes explain that this sliding motion can shear off the car’s roof and kill the people inside.
Rear Underride Crashes
Rear underride crashes happen when a car hits the back of a trailer. They are common in stop-and-go traffic, at night, or when a truck slows down without warning. Federal rules require most trailers to carry a rear underride guard, a steel bar meant to stop a car before it slides under, though some trailers are exempt. Research shows these guards can bend, break, or tear away when hit, especially when rusted, damaged, or poorly kept.
Side Underride Crashes
Side underride crashes happen when a car hits the side of a trailer, often while the truck is turning or crossing an intersection. These crashes are especially dangerous because federal law does not require side underride guards, leaving a long, open space under most trailers. Congress has looked at proposals to change this, but progress has been slow, as we explained when we covered how a stalled federal underride bill failed to move forward in Congress.
Why a Truck Underride Crash Is So Often Fatal
A truck underride crash gets around nearly every safety feature built into a modern car. Crumple zones absorb energy at bumper level, but in an underride, the first solid thing the car hits may be the trailer bed at windshield height. Research on underride crashes shows the passenger compartment is often crushed or sheared, and biomechanical studies of underride crash testing have found that occupants face a high risk of serious head, neck, and chest injury when the trailer structure intrudes into the passenger compartment.
Survivors often face injuries that change their lives. These often include:
- Traumatic brain injuries that affect memory, mood, and the ability to work
- Spinal cord and neck injuries, sometimes leading to paralysis
- Crushing chest injuries and internal organ damage
- Severe facial injuries and fractures needing several surgeries
These injuries usually bring medical bills, lost income, and long-term care needs that can reach hundreds of thousands of dollars or more. These claims call for careful work, not a quick settlement.
Who May Be Responsible When a Car Goes Under a Trailer
Fault in an underride case often reaches beyond the truck driver. Responsible parties may include the driver, the motor carrier, a maintenance contractor, a freight broker, or the company that designed or built the guard. Claims may involve both negligence and product liability, and claims against freight brokers can face added hurdles, including defenses based on federal law.
Missouri’s Safety Equipment Requirements
Missouri law ties trucking safety directly to federal rules. Under MO § 307.400.1, it is generally unlawful to operate a commercial motor vehicle or trailer unless it is equipped and operated as required by Parts 390 through 397 of Title 49 of the Code of Federal Regulations, with certain exceptions. If a trailer lacked a required rear guard, or had a damaged or poorly kept one, that violation may support a negligence claim, though courts weigh each case on its own facts.
Evidence That Can Disappear Quickly
Evidence in truck cases can be lost if nobody acts to save it. Electronic logging device data, black-box data, driver logs, inspection reports, and maintenance records can show whether a carrier knew about a damaged guard or pushed a driver past safe limits. Federal rules require carriers to keep some of these records for only a short time, and the trailer itself may be repaired or put back on the road. Our team sends demands to preserve this evidence early.
💡 Pro Tip: If you can do so safely, ask a family member to photograph the back and sides of the trailer, including any guard, and write down the truck’s DOT number. Those details can help us identify the carrier and check its safety history.
Missouri Deadlines and Recovery Rules for Injured People and Families
Missouri sets firm deadlines for filing these claims, and the deadline depends on the type of claim. Most personal injury claims based on negligence must be filed within five years under MO § 516.120(4). Under MO § 537.100, a wrongful death claim generally must be filed within three years after the claim arises, which is usually the date of death. Claims against government entities or other special cases may have different deadlines or notice rules.
| Claim Type | General Deadline | Missouri Statute |
|---|---|---|
| Personal injury (negligence) | 5 years | MO § 516.120(4) |
| Wrongful death | 3 years | MO § 537.100 |
| Refiling after voluntary dismissal (nonsuit) | 1 year after dismissal | MO § 537.100 |
There are some narrow exceptions, but you should not count on them. En virtud de la Missouri wrongful death deadline statute, time when a defendant is out of Missouri and cannot be personally served generally does not count. But if service happens after the original deadline has passed, it generally must be completed within 180 days of filing or the court may dismiss the case. The same statute generally allows a new case within one year after a voluntary dismissal.
Who Can Bring a Wrongful Death Claim
Missouri sets an order of family members who may sue. Under MO § 537.080.1, the spouse, children, surviving descendants of deceased children, or parents come first. If none exist, siblings or their descendants may bring the claim. If none of those exist either, the court may appoint a plaintiff ad litem. Under MO § 537.080.2, only one wrongful death case may be brought against any one defendant for the death of any one person, so families generally need to work together.
What Damages May Be Available
Missouri juries may award damages for both financial and personal losses. Under MO § 537.090, the jury may consider financial losses, funeral costs, and the value of the services, companionship, comfort, guidance, and support the family lost, as well as what the victim suffered between the injury and death. It may also consider aggravating factors, such as a carrier knowingly running a trailer with a damaged guard, though punitive damages require clear and convincing evidence. The statute does not allow damages for grief and bereavement.
How Our Kansas City Team Handles These Cases
We treat every family as neighbors, because in the Northland, that’s who you are. Our attorneys bring more than 50 years of combined experience, and we have recovered millions for clients in serious injury, wrongful death, and commercial vehicle cases. Voted #1 Accident Lawyer and Best of the Northland, our team pursues all available coverage instead of taking the fast, low offer insurers often make early on. Working with an experienced underride accident lawyer can help you understand your options before you sign anything.
We also back our work with a 30-Day Satisfaction Guarantee. No attorney can promise a certain result, but we can promise clear, honest communication.
Preguntas frecuentes
1. What is an underride accident in simple terms?
It’s a crash where a car slides under a truck or trailer. Because the trailer sits so high, the impact often lands on the car’s windshield and roof instead of its bumper.
2. Are underride guards required on all trucks?
Federal rules require rear guards on most trailers, though some vehicles are exempt, and side guards are not required. Missouri law, through MO § 307.400.1, generally requires commercial vehicles to follow federal equipment rules.
3. How long do I have to file a claim in Missouri?
Generally, five years for personal injury negligence claims under MO § 516.120(4) and three years for wrongful death under MO § 537.100. Exceptions and shorter deadlines may apply, so talk with a lawyer early.
4. Can a trailer manufacturer be held responsible?
In some cases, yes. If a guard was poorly designed or built, a product liability claim may be possible along with negligence claims against the carrier.
5. Can more than one family member file a wrongful death lawsuit?
Under MO § 537.080.2, only one case may be brought against each defendant for one person’s death. Eligible family members generally join together in a single case, and the court decides how to divide any recovery.
Moving Forward After a Devastating Crash
Underride crashes are among the most dangerous collisions on Kansas City roads because they defeat the safety systems built into passenger cars. Missouri law may give injured people and grieving families ways to hold responsible parties accountable, but deadlines, evidence rules, and multiple parties make these cases complex. Acting sooner helps protect the evidence and your options.
When you’re ready, we’re here to listen. Reach out to Ley de lesiones de Northland by calling 816-400-4878 o schedule your free consultation. Don’t wait. Our team will stay with you from the first call to the end of your case.
Disclaimer: This content is for informational purposes only and is not legal advice. Every case is unique, and results may vary. Consult an attorney about your specific circumstances.
