One of the first arguments insurance adjusters love to make after a car crash sounds something like this:
“Your client was wearing a seat belt.”
“The airbags deployed.”
“The vehicle only has minor damage.”
“Cars today are designed to protect occupants.”
The implication is clear: if the vehicle did its job, serious injuries shouldn’t exist.
But science tells a different story.
A 2019 study published in Traffic Injury Prevention examined how injury patterns have changed in today’s safer automobiles. The researchers analyzed nearly two decades of crash data involving belted occupants in frontal collisions and discovered something every personal injury attorney should understand.
Modern vehicles have become remarkably good at preventing death. They have not eliminated injury.
Safety Engineering Has Changed the Battlefield
Automobile manufacturers have invested billions of dollars improving crashworthiness.
Today’s vehicles feature:
· Advanced airbags
· Pretensioning seat belts
· Energy-absorbing crumple zones
· Stronger passenger compartments
· Sophisticated restraint systems
The study found that occupants riding in newer vehicles (2009 and later) experienced significantly fewer moderate and severe injuries than occupants in older vehicles.
That’s excellent news.
But here’s the catch.
The laws of physics haven’t changed.
When a vehicle traveling 40 miles per hour suddenly stops, the occupants continue moving until restrained. Seat belts and airbags dramatically reduce the risk of catastrophic injury, but they cannot make crash forces disappear.
They simply change how those forces are distributed throughout the body.
The Injury Pattern Has Evolved
The researchers found that while serious head injuries and many lower extremity injuries have declined, other injuries remain surprisingly common.
Chest injuries—including rib fractures and sternum injuries—continue to occur despite modern restraint systems.
Likewise, injuries involving the shoulders, arms, wrists, and hands remain frequent.
Why?
Because seat belts save lives by spreading tremendous crash forces across the chest and shoulder. Airbags cushion the head and upper body, but they also alter the body’s biomechanics during impact.
Instead of preventing all injuries, today’s safety systems often convert what might once have been a fatal injury into one that is painful, treatable, and sometimes permanently disabling.
Women Often Sustain More Severe Injuries
One of the growing concerns in automotive safety research is that female occupants are consistently found to have a higher risk of injury than men in comparable crashes. Although this particular study focused on overall injury trends, its findings align with a growing body of research showing that women experience higher rates of whiplash injuries, chest injuries, and lower extremity injuries despite wearing seat belts and benefiting from the same safety technologies.
Several factors likely contribute to this increased risk. Women generally have lower muscle mass, different body geometry, lighter body weight, and different seating positions than men. Historically, many crash test dummies were modeled after the average male, meaning vehicle safety systems have often been optimized around male anatomy.
For attorneys handling motor vehicle collision cases, this is an important consideration. Two occupants in the same vehicle involved in the same crash may sustain dramatically different injuries—not because one is exaggerating, but because biomechanics and anatomy influence how crash forces are transferred through the body.
Low Vehicle Damage Does Not Equal Low Human Injury
One of the biggest misconceptions in litigation is the belief that minimal property damage means minimal bodily injury.
Vehicles are designed to absorb crash energy.
Human beings are not.
A bumper may rebound.
A cervical spine cannot.
A fender may flex.
Ligaments and tendons often do not.
This study reinforces an important principle: improvements in vehicle engineering cannot eliminate the forces experienced by the occupants inside the vehicle.
Those forces must be absorbed somewhere.
Older Clients Face Greater Risk
Another important finding involved age.
As vehicles become safer, thoracic injuries represent an increasing proportion of serious injuries among older adults.
An older occupant is more susceptible to rib fractures, chest wall injuries, and other skeletal trauma because aging naturally reduces bone density and tissue elasticity.
Two people involved in the exact same collision can experience dramatically different outcomes simply because of differences in age and physiology.
This is particularly important when evaluating claims involving retirees or elderly drivers.
The Seat Belt Did Its Job
Defense experts sometimes suggest that because a client was properly restrained, the collision could not have caused significant injury.
The opposite may be true.
Seat belts are designed to restrain the body during rapid deceleration.
Without them, occupants may strike the steering wheel, windshield, or be ejected from the vehicle.
With them, occupants survive—but may sustain injuries to the chest, shoulders, spine, or upper extremities because the restraint system successfully absorbed enormous crash forces.
The safety device worked exactly as intended.
That does not mean the crash was harmless.
The Takeaway for Attorneys
Whether you’re representing an injured client in Boston, Cambridge, Quincy, Brookline, Newton, or anywhere in Eastern Massachusetts, it’s important to understand that today’s safer vehicles do not eliminate the potential for serious injury. Insurance companies often point to minor vehicle damage or advanced safety features as evidence that injuries should be minimal. The scientific literature says otherwise.
Modern automobiles have dramatically reduced fatalities, but they have not rewritten the laws of biomechanics. Your client can walk away from a late-model vehicle, wearing a seat belt, with relatively little damage to the car—and still suffer significant orthopedic, soft tissue, thoracic, or whiplash injuries.
For Boston personal injury attorneys, working closely with experienced healthcare providers who understand collision biomechanics can make a significant difference in documenting injuries, establishing causation, and helping clients recover physically while strengthening the medical foundation of their case.
When evaluating a motor vehicle collision, don’t let advanced safety technology overshadow sound medical science.
Modern cars are safer than ever, but even low-speed collisions can still cause significant injuries that may not be immediately apparent. Call Dr. Quigley today at 617-397-7854 to discuss your case, or click here to view his credentials.

