The short answer is yes.

Studies cited by IIHS and NHTSA show helmets substantially reduce the risk of death and traumatic brain injury in motorcycle crashes. Unhelmeted motorcyclists are 3 times more likely to suffer a traumatic brain injury (TBI) compared to those wearing DOT-compliant helmets.

However, the relationship between helmet use and injury claims involves more than just statistics. Tennessee bikers need to understand how helmet laws work, what data actually shows about protection levels, and how wearing or not wearing a helmet might affect a personal injury case.

How motorcycle helmets protect riders

Multiple studies have confirmed that helmets save lives and prevent serious injuries.

• The Insurance Institute for Highway Safety reports that helmets reduce the risk of death by 37% to 42%.
• Another study found that helmets reduce the risk of head injury by almost 70%.
• NHTSA data from 2023 shows that 6,335 motorcyclists died in crashes that year, which is the highest number recorded since at least 1975 and representing 15% of all traffic fatalities.
• Hospital-treated helmeted motorcyclists experience TBIs at a 15% rate compared to 21% for unhelmeted motorcyclists.
• Severe TBI rates drop from over 7% for unhelmeted bikers to 4.7% for helmeted bikers.

State numbers tell a consistent story. States with universal helmet laws see significantly higher compliance rates. In 2023, helmet use reached 82.7% in states requiring all motorcyclists to wear helmets compared to just 65.9% in states with weak or no helmet requirements.

Tennessee helmet law requirements

Under Tennessee Code § 55-9-302, all motorcycle operators and passengers must wear helmets. This requirement applies regardless of age, experience, or licensing status. According to the statute, the helmet must meet federal safety standards, commonly referred to as DOT certification.

For riders 21 and older, Tennessee law allows alternative certifications, including helmets approved by:

• American Society for Testing Materials (ASTM),
• Consumer Product Safety Commission (CPSC),
• Snell Memorial Foundation, or
• Southern Impact Research Center (SIRC).

Limited exceptions exist for motorcyclists in enclosed cabs, during funeral processions at speeds under 30 mph, and for fully enclosed autocycles. Outside these narrow exceptions, Tennessee treats helmet use as mandatory.

How helmets actually protect your brain

Knowing how helmets work helps explain both their benefits and their limitations. A motorcycle helmet is made of a few primary components.

• The outer shell spreads impact force across a wider area, preventing concentrated damage to any one point on the skull.
• The impact-absorbing liner, typically made of expanded polystyrene foam, compresses on contact to slow down the rate at which your head decelerates.
• Comfort padding ensures proper fit, while the retention system keeps the helmet in place during a crash.

Today, helmet designs also address rotational forces. These forces are the twisting motion that occurs during oblique impacts. Technologies like MIPS (multi-directional impact protection system) allow the helmet to rotate slightly relative to the head, reducing the strain on the brain tissue that causes many traumatic brain injuries.

What helmets cannot prevent

No helmet eliminates the risk of brain injury entirely. The effectiveness statistics cited above reflect real-world outcomes across thousands of crashes, but individual results depend heavily on impact speed, angle, and circumstances. High-speed collisions can overwhelm any helmet’s protective capacity.

Research published in Injury Epidemiology found that while helmets significantly reduce skull fractures and penetrating injuries, their performance in preventing the rotational forces that cause diffuse brain injuries is more limited. Helmeted riders still experience concussions, contusions, and other forms of TBI, just at substantially lower rates.

Does helmet use affect your injury claim?

Tennessee follows a modified comparative negligence system. If you share responsibility for your injuries, your compensation is reduced by your percentage of fault. If your fault exceeds 49%, you recover nothing.

Violating Tennessee’s helmet law doesn’t automatically make you responsible for a crash caused by another driver’s negligence. The other driver still remains liable for causing the collision.

However, if you suffered more severe head injuries because you weren’t wearing a helmet, the defense may use that fact against you. Specifically, they may argue that your own choices increased the extent of your damages.

Expert testimony can make a difference

At this point, expert testimony becomes critical. Your attorney may need to demonstrate what injuries you would have sustained even with a helmet. The demonstration could establish that the at-fault driver remains fully responsible for those damages. The analysis gets technical, and the outcome depends heavily on the specific facts of each case.

Helmeted riders still suffer injuries

Wearing a helmet doesn’t prevent brain injuries. It simply reduces them. If you wore a DOT-compliant helmet and still suffered a TBI in a crash caused by someone else’s negligence, you retain full rights to pursue compensation for your medical expenses, lost wages, pain and suffering, and other damages.

The helmet you wore can actually strengthen your case by demonstrating that you took reasonable precautions for your own safety. It removes one potential defense strategy and allows your claim to focus entirely on the other party’s liability.

Brain injury symptoms to watch for after any motorcycle crash

Even with a helmet, bikers should monitor themselves for signs of brain injury following any crash. Symptoms may appear immediately or develop over days and weeks. Persistent headaches, memory problems, difficulty concentrating, mood changes, sleep disturbances, and sensitivity to light or noise all warrant a visit to the doctor.

The brain enters a vulnerable state after any trauma. A second impact before the first injury heals can cause severe and permanent damage. Follow all medical advice regarding activity restrictions, and don’t return to riding until cleared by a healthcare provider who understands your injury history.

Your road to justice after a Tennessee motorcycle accident

Whether you were injured wearing a helmet or not, a motorcycle accident that wasn’t your fault may entitle you to significant compensation. Brain injuries require extensive documentation and expert testimony in order to paint the full picture of their impact on your life.

Tennessee’s 1-year statute of limitations means you need to act quickly to protect your rights. Contact Banks & Jones today to discuss your case with an experienced Tennessee motorcycle accident attorney who understands how to build strong brain injury claims.