When driving near an 18-wheeler or big rig, most drivers understand the need to stay alert. But few are aware of one of the deadliest types of collisions involving large trucks: underride accidents.

According to recent data, over 350 people are killed each year in underride crashes in the U.S.—and many more suffer life-altering injuries. These accidents are as catastrophic as they are preventable.

What Is A Truck Underride Accident?

An underride accident happens when a passenger vehicle collides with a large truck and then slides underneath the truck’s trailer. These types of accidents most commonly occur:

At the rear of the truck
Along the side of the trailer

Because trucks sit much higher than standard vehicles, the result can be devastating—often leading to the roof of the car being crushed or completely sheared off, putting drivers and passengers at extreme risk of traumatic brain injuries or death.

Aren’t There Safety Measures In Place?

Yes, most large trucks are equipped with rear impact guards—also known as underride guards—that are designed to prevent vehicles from sliding underneath.

However, studies have shown that even at relatively low speeds, these guards can fail. Many are poorly designed, improperly maintained, or simply not strong enough to withstand real-world impacts.

Additionally, side underride guards are not currently required under federal law, despite clear evidence that they could save lives.

When Are Underride Accidents Most Likely?

Underride collisions are especially common in:

Nighttime conditions, when visibility is low
Heavy rain, fog, or snow
Poorly lit or unmarked trucks
Sudden stops or lane changes by the truck driver

In many cases, the truck’s lack of reflective markings, defective lighting, or failure to follow safety protocols can directly contribute to the accident.

What To Do If You Or A Loved One Is Injured

Underride accidents require specialized legal experience, because these cases often involve:

Multiple parties (trucking companies, manufacturers, and insurers)
Federal and state trucking regulations
Catastrophic injury or wrongful death claims

At Council & Associates, LLC, we have the experience, resources, and a skilled Atlanta, GA truck accident lawyer that gives us the ability to hold trucking companies accountable. If you or a loved one has been injured—or worse, lost someone—in a crash involving an 18-wheeler, don’t wait.