The Seat Belt Defense in Tennessee Injury Cases

Does Not Wearing a Seat Belt Hurt My Tennessee Injury Claim?

In Tennessee, the fact that you were not wearing a seat belt cannot be used against you in a civil case for damages, and neither can a ticket for not wearing one.

State law makes seat belt non-use inadmissible when you are suing for injuries from a crash, so the jury deciding your case never hears about it.

That means the driver who hit you cannot blame your injuries on the belt to shave down what they owe.

One narrow exception exists, and it lives inside product defect litigation, not an ordinary two-car crash.

The rule matters because the seat belt is one of the two standard arguments an insurer uses to shrink a Tennessee crash claim.

Tennessee law shuts down both, and knowing why is worth more to your recovery than most people expect.

How Tennessee's Seat Belt Evidence Rule Works (T.C.A. § 55-9-604)

Tennessee made a deliberate choice that many states did not. By statute, the failure to wear a seat belt, and any citation for that failure, cannot be admitted in a civil action for damages.

The Statute Keeps Your Seat Belt Out of the Case

Section 55-9-604 keeps belt non-use away from the jury entirely. The defense cannot tell jurors you were unbelted, cannot argue your injuries would have been lighter with the belt on, and cannot wave a seat belt citation in front of them.^[1] In an ordinary crash case, the question of the belt is legally off the table.

Why Tennessee Wrote the Rule This Way

Most states allow some version of a seat belt defense, letting a jury cut a plaintiff's damages for not buckling up. Tennessee's legislature went the other way and took that argument off the table outside the product context. The reasoning is plain: a driver who runs a light and causes a wreck should not earn a discount because the person they hit made a separate choice about a belt. The crash is still the crash.

The Rule as It Stands in 2026

Section 55-9-604 is current as of Tennessee's 2024 code, and no enacted bill from 2024 through 2026 has made seat belt non-use generally admissible. Repeal and amendment bills surface in the legislature from time to time, so the rule is always worth confirming when a case is filed. As of 2026, the inadmissibility rule stands.

The Two Arguments Tennessee Law Takes Away From the Insurer

Two moves show up again and again when an insurer wants to shrink a Tennessee crash claim. One is the seat belt. The other is the medical bill. Tennessee law blocks both.

The Seat Belt Argument

The first move is to blame your injuries on the belt you were not wearing. Section 55-9-604 removes it. An adjuster who says your unbelted body is partly responsible for your injuries is describing a defense the statute forbids, and in an ordinary injury case the jury never weighs it.

The Billed-Amount Argument

The second move is to claim your medical bills were not the billed amount at all, only the smaller sum your health insurer negotiated and paid. Tennessee's Supreme Court closed that door for ordinary injury cases in Dedmon v. Steelman, 535 S.W.3d 431 (Tenn. 2017): a plaintiff may prove the full, undiscounted amount of the reasonable medical bills, and the defense cannot show the jury the discounted amount the insurer accepted.^[2] That single ruling often changes a claim's value more than any other, and it feeds directly into how an average car accident settlement in Tennessee is calculated.

Why Losing Both Matters to Your Recovery

Put the two together and the practical consequence is direct. An adjuster who cites your seat belt as a reason to discount the claim, or who values your bills at the insurer-paid rate, is arguing two things a Tennessee court will not hear. The seat belt is one tactic among several, alongside old records and pre-existing conditions pulled up to explain away current symptoms. Knowing which arguments the law has already answered is half of holding a claim's value.

 

The One Exception: Seat Belts in a Crashworthiness Claim

There is exactly one situation where seat belt non-use becomes admissible, and it is not an ordinary crash. It is a crashworthiness case: a product liability claim that the vehicle itself, or a component like the restraint system, was defective and made the injuries worse. Section 55-9-604 lets a defendant introduce evidence of non-use on the causal relationship between not wearing the belt and the injuries, but only when all three of these are true:

• A products liability claim is on file. The plaintiff has brought a product defect claim, typically against the manufacturer, alleging a defect that aggravated the crash injuries
• The defendant pleaded it. The seat belt non-use was raised in the answer or a timely amendment, not sprung at trial
• The defendant proves the effect. The defendant must prove the plaintiff was not wearing the belt, that wearing it would have reduced the injuries, and the extent of that reduction

Notice how narrow that lane is. The exception opens only inside product-defect litigation, and even there the defendant carries the burden on every element. It does not migrate into a routine two-car collision. Anyone pursuing a defective vehicle or restraint claim can see where seat belt evidence fits, and where it does not, with our Tennessee product liability lawyers.

Tennessee's Seat Belt Requirement and Its Penalties

The evidence rule is separate from the requirement to buckle up, and drivers sometimes run the two together. Breaking the requirement carries a small fine. It still cannot be used against you in a damages case.

Who Must Buckle Up, and the Fines (T.C.A. § 55-9-603)

Section 55-9-603 requires the driver and every passenger age four and older to wear a seat belt whenever the vehicle is in forward motion. A violation is a Class C misdemeanor, with a fine of $30 for a first offense and $55 for a second or later offense.^[3] An officer cannot arrest you solely for a seat belt violation. That ticket can cost you a small fine, yet under Section 55-9-604 it stays out of an ordinary Tennessee car accident claim.

Child Restraints Carry the Same Evidence Rule (T.C.A. § 55-9-602)

Parents worry about this one, and the answer usually surprises them. Section 55-9-602 governs child passenger restraints, and it carries the same inadmissibility rule as the adult belt statute, with the identical products exception.^[4] In an ordinary crash, the fact that a child was not properly restrained does not hand the defense a damages argument any more than an adult's unbuckled belt does. The narrow crashworthiness exception is the only place that evidence comes in.

What the Seat Belt Rule Does Not Change: Comparative Fault

The seat belt statute removes one argument. It does not remove comparative fault from the case. Tennessee follows modified comparative fault with a 49 percent bar under McIntyre v. Balentine: you recover only if you are less than 50 percent at fault, and your recovery is reduced by your own percentage. What Section 55-9-604 does is keep the seat belt out of that calculation. The defense can still argue you were speeding, ran a light, or otherwise contributed to the crash. It cannot argue you should have buckled up. Where that line falls is explained further in our page on Tennessee comparative negligence.

This distinction shapes strategy more than people expect. With the belt off the table, the fault fight narrows to what actually happened on the road, and the damages fight, thanks to Dedmon, runs on the full value of the medical bills. Both work in an injured person's favor, and both feed into how a claim's non-economic value is measured against Tennessee's damage caps.