Collisions with commercial trucks can cause serious injuries, but underride crashes are especially dangerous for people in passenger vehicles. In these accidents, a smaller vehicle slides under the rear or side of a large truck or trailer. This can cause the upper part of the smaller vehicle to take on forces it was not built to handle. As a result, these crashes often lead to severe head, neck, and upper-body injuries, and they are frequently fatal. Federal safety officials have recognized this risk for years, so there are rules requiring certain trailers and semitrailers to have rear impact protection to help prevent passenger-compartment intrusion in some rear-end crashes.
This issue matters a lot in Schaumburg because drivers often share busy roads with tractor-trailers, delivery trucks, and other commercial vehicles. Roads like Interstate 90, Illinois Route 53, Higgins Road, and Golf Road see heavy traffic from both passenger cars and trucks, not just in Schaumburg but also in nearby towns. When I investigate a fatal underride crash, I look at more than just the crash itself.
I want to find out why the vehicles collided, if the required safety equipment was in place and working, if the truck driver or company broke any safety rules, and if anyone else played a role in the accident. The most common example occurs when a car strikes the rear of a tractor-trailer and slides underneath the trailer. Underride can also occur along the side of a commercial truck, particularly when a passenger vehicle enters the open area between the truck’s axles or beneath the side of a trailer.
The risk from an underride crash is not the same as a typical rear-end collision. Modern passenger cars are built with features like crumple zones, airbags, seat belts, and strong passenger compartments to help manage crash forces. These safety systems work best when the car hits something at the height they were designed for.
In an underride crash, the taller truck structure can miss the main safety features of the passenger car. The trailer may push into the windshield, roof, and passenger area. NHTSA’s rear underride rules focus on stopping this kind of intrusion because keeping it out is key to helping people survive these crashes.
That physical mismatch helps explain why an accident that might otherwise have produced survivable vehicle damage can become catastrophic when underride occurs.
Underride accidents are often so severe because the trailer can push into the area where the driver and passengers sit. When the front of a car slides under a trailer, the back of the trailer can hit the windshield, roof, or upper part of the car instead of the parts meant to absorb a crash.
This puts people in the car at risk for very serious head and neck injuries. Depending on how the crash happens, victims might also have brain injuries, spine injuries, crushed bones, internal injuries, or other severe harm.
The difference in speed between vehicles can make these crashes even worse. If a car hits a stopped or slow-moving trailer at highway speed, the impact can be huge. Factors like darkness, rain, heavy traffic, broken-down trucks, hard-to-see trailers, sudden lane changes, or quick slowdowns can also lead to these accidents. In an analysis of fatal crashes involving vehicles striking the rear of trucks, NHTSA found underride reported in a substantial percentage of the fatalities studied.
Rear underride guards, sometimes referred to informally as underride bars, are designed to reduce the likelihood that a passenger vehicle will travel underneath the rear of certain trailers and semitrailers.
Federal Motor Vehicle Safety Standard No. 223 establishes performance requirements for rear impact guards, while FMVSS No. 224 governs rear impact protection on qualifying trailers and semitrailers. Current federal requirements generally require covered trailers and semitrailers to be equipped with rear impact guards meeting the applicable federal standard, subject to specified vehicle classifications and exceptions.
Federal Motor Carrier Safety Regulations also address rear impact guards on commercial vehicles in operation. Under 49 C.F.R. § 393.86, vehicles subject to the rule must have rear impact protection satisfying applicable requirements.
When I look into a fatal underride crash, I pay close attention to the rear guard. I check if the guard was required, if it was installed correctly, if it was damaged before, if rust or wear made it weaker, and if maintenance or inspection records show any past issues.
Just because underride happened does not mean someone was automatically at fault. Every crash needs to be looked at based on its own facts. Still, things like the guard, trailer structure, maintenance history, and following federal rules can be very important evidence.
Fatal truck accident claims are usually more complicated than just figuring out if one driver made a mistake. Commercial trucks are part of a bigger system that includes drivers, trucking companies, dispatchers, maintenance workers, trailer owners, shippers, contractors, and sometimes several different companies.
For example, suppose a tractor-trailer suddenly stops partially within a traffic lane because of a mechanical problem. A passenger vehicle then collides with the trailer and underrides its rear structure. The investigation may need to determine why the truck stopped, whether warning devices were deployed, whether its lighting was functioning, whether the rear guard complied with applicable requirements, and whether earlier maintenance problems had been ignored.
Another underride accident may begin when a truck driver changes lanes directly in front of a passenger vehicle. In that situation, driver conduct, mirrors, blind spots, electronic logging information, dash-camera footage, and vehicle data may become relevant.
The objective is to determine the entire chain of events rather than stopping with the most obvious explanation.
One of my priorities after a serious commercial truck crash is preserving evidence. Trucking companies and their insurers may begin investigating almost immediately, and many forms of evidence are controlled by the trucking company or another commercial entity.
Relevant evidence can include electronic control module data, dash-camera recordings, driver qualification records, electronic logging device information, dispatch communications, inspection records, maintenance records, photographs, GPS information, trailer identification information, and records concerning the rear impact guard.
Physical evidence is equally important. The truck and trailer may contain impact marks, deformation, guard damage, lighting conditions, tire evidence, and other information that helps reconstruct how the underride occurred.
The passenger vehicle can also provide valuable evidence. Roof deformation, windshield damage, intrusion patterns, crush depth, and vehicle data may help accident reconstruction professionals determine the mechanics of the collision.
This is one reason I do not treat a fatal underride accident as an ordinary insurance claim. Once a truck, trailer, vehicle, recording, or electronic record is altered or lost, reconstructing what happened can become significantly more difficult.
A fatal underride crash can involve more than one legally responsible party. The truck driver may have caused or contributed to the collision by making an unsafe lane change, stopping improperly, failing to maintain a proper lookout, operating while fatigued, speeding, or violating other traffic or safety requirements.
The motor carrier may face separate issues involving hiring, training, supervision, inspection, maintenance, or company safety practices. Depending on ownership arrangements, another company may own the trailer. Maintenance contractors or other businesses may also become relevant if their conduct contributed to a dangerous condition.
Product-related questions can arise in some cases as well. If a component failed, investigators may need to determine whether the failure resulted from poor maintenance, crash damage, improper installation, or another cause.
I investigate these possibilities because identifying every legally responsible party can be especially important when a collision has resulted in a death and the family’s losses are substantial.
When negligence causes a person’s death, Illinois law provides a mechanism for pursuing damages through the Illinois Wrongful Death Act, 740 ILCS 180. Section 1 provides for liability when a death results from a wrongful act, neglect, or default under circumstances in which the injured person could have maintained an action if death had not occurred.
A wrongful death case is generally brought by the personal representative for the benefit of the surviving spouse and next of kin. Illinois law allows the jury to award fair and just compensation for pecuniary injuries resulting from the death and expressly recognizes grief, sorrow, and mental suffering as recoverable damages. Punitive damages may also be available when legally applicable.
A fatal truck accident can create enormous economic and personal losses. A family may lose income, household services, companionship, guidance, and support that would otherwise have continued for decades.
When I evaluate such a claim, I look carefully at the deceased person’s age, employment, earnings, family relationships, responsibilities, expected working life, and the many ways that person’s death affects surviving family members.
Wrongful death and survival claims address different categories of loss. The Illinois Survival Act, found at 755 ILCS 5/27-6, allows certain personal injury claims that belonged to the deceased person to survive the death. Illinois law specifically provides for the survival of actions seeking damages for personal injury, including punitive damages when legally applicable.
Depending on the circumstances, a survival action may address losses experienced by the injured person between the collision and death. This can become especially significant when the victim remained alive for some period after the underride crash and received emergency or hospital treatment.
The precise damages available depend on the evidence and circumstances of the particular case. I therefore examine medical records, emergency response information, witness accounts, and other evidence when determining which claims may be available.
The visual severity of an underride accident can sometimes make liability appear obvious. Legally, however, I still need evidence establishing what happened and why.
A trucking company may contend that the passenger vehicle was speeding, following too closely, distracted, or otherwise responsible for the crash. Other defendants may dispute which company owned the tractor, trailer, cargo, or safety equipment. There may also be disputes about whether a particular federal regulation applied to the vehicle involved.
Illinois personal injury cases are generally subject to a two-year limitations period under 735 ILCS 5/13-202, and Illinois wrongful death actions are generally required to be commenced within two years after death, subject to statutory exceptions.
The practical reason to investigate promptly is even more immediate. Electronic information may be overwritten, vehicles can be repaired, witnesses become harder to locate, and physical evidence can change. A strong fatal truck accident claim is built from evidence, not assumptions.
A fatal underride accident can leave a family searching for answers at the same time a trucking company, commercial insurer, and other businesses are protecting their own interests. I believe these cases require a careful investigation into the truck driver, motor carrier, trailer, rear impact protection, maintenance history, electronic evidence, and every event leading to the collision. When the evidence supports a wrongful death or survival claim, I work to identify the responsible parties and pursue the compensation Illinois law permits.
At SJ Injury Law, I represent individuals and families affected by serious and fatal truck accidents throughout Schaumburg, Arlington Heights, Buffalo Grove, Des Plaines, Mount Prospect, Northbrook, Palatine, Prospect Heights, Wheeling, Park Ridge, Rosemont, Glenview, Chicago, and communities throughout Illinois.
If your spouse, parent, child, or other family member was killed in an underride collision or another serious commercial truck accident, call our Schaumburg truck accident lawyer at SJ INJURY LAW at (847) 434-3555 to receive your free consultation. I can review what happened, determine what evidence should be preserved, investigate the truck and the companies involved, and explain the legal options that may be available to your family under Illinois law.
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