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Motorcycle Accidents in New Hampshire: Your Legal Rights and Options

Writer: Keith Diaz
Keith Diaz
Sep 21
7 min read
Blue Apis Law webpage with headline Motorcycle crashes follow different rules and text on helmet law, fault, and insurance.

Motorcycle accidents in New Hampshire carry unique legal complexities that set them apart from other motor vehicle claims. NH is the only state without a mandatory adult helmet law, the state's modified comparative fault system under RSA 507:7-d creates additional hurdles for injured rid

ers, and insurance gaps from NH's no-mandatory-insurance policy can leave riders exposed. If you've been injured in a motorcycle accident, understanding these legal issues is essential to protecting your claim. Apis Law provides experienced motorcycle accident representation throughout New Hampshire.


Why Motorcycle Cases Are Different


Riding exposes you in a way a car does not. There is no cage, no crumple zone and no airbag between a rider and the road, so an impact that leaves a driver with a sore neck can put a rider in a trauma bay. New Hampshire adds its own conditions: narrow rural highways, a freeze-thaw cycle that breaks up pavement and leaves sand and gravel in the corners, and a heavy tourist season that puts unfamiliar drivers on the roads riders use every day.


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New Hampshire Motorcycle Laws That Affect Your Claim


Helmet Requirements Under RSA 265:122

New Hampshire does not require an adult motorcycle rider to wear a helmet. Under RSA 265:122, I, only riders under 18 must wear approved protective headgear, and paragraph IV makes it a violation for an operator to carry an under-18 passenger without it. There is no adult requirement.


Carriers raise the helmet anyway. The argument is that a helmetless rider's injuries were worse than they should have been, and the goal is to convert that into a share of fault under RSA 507:7-d.


New Hampshire law gives a rider real ground to resist it. In Thibeault v. Campbell, 136 N.H. 698 (1993), the New Hampshire Supreme Court held that evidence of a party's failure to use a seat belt is inadmissible to show negligence where the nonuse may have contributed to the party's injuries but was not a cause of the collision itself. The reasoning was about duty, not about seat belts. As the Court put it, "[t]he failure to wear a seat belt does not, by itself, create an unreasonable risk of injury." Because another driver's accident-causing negligence is not a readily foreseeable danger, there is no common-law duty to guard against it in advance.


Two limits are worth stating plainly. Thibeault is a seat-belt case, and the New Hampshire Supreme Court has not decided whether the same rule reaches motorcycle helmets. Justice Johnson dissented and would have let the evidence in.


The reasoning still runs the rider's way, and arguably further than it ran in Thibeault itself. A seat-belt user in 1993 at least faced a legislature that had weighed a mandate more than once. An adult rider in New Hampshire faces no helmet duty at all. And RSA 507:7-d puts the burden of proving the existence and amount of fault on the party alleging it, which here is the carrier.


Comparative Fault in Motorcycle Cases (RSA 507:7-d)

New Hampshire's modified comparative fault statute, RSA 507:7-d, allows an injured party to recover damages only if their fault does not exceed 50%. If you are found 51% or more at fault, you are completely barred from recovery. In motorcycle cases, insurers aggressively argue that the rider was at fault—whether for speeding, lane positioning, or failing to take evasive action. For a deeper understanding, visit our comparative fault page.


Financial Responsibility and Insurance (RSA 264:3 and RSA 264:15)

New Hampshire does not require most motorists, riders included, to carry liability insurance before a crash. What the state requires is proof of financial responsibility afterward. Under RSA 264:3, once an accident is reported the director suspends the license and registration of the driver and the owner until they furnish security sufficient to satisfy any judgment arising from the crash and give proof of financial responsibility going forward. Paragraph II exempts an owner or driver who had a motor vehicle liability policy in effect at the time. A rider who causes a crash while uninsured is personally exposed for the damages.


That gap is why uninsured motorist coverage carries so much weight here. RSA 264:15 does not require you to buy a policy. It requires that a policy issued under RSA 264:14 include uninsured and hit-and-run coverage in at least the bodily injury amounts and limits set by the chapter. If you elect liability limits above the statutory minimum, your uninsured motorist limits rise to match automatically. If you carry no policy, the section gives you nothing. In a state that does not mandate coverage, the policy a rider chooses to buy is often the only source of payment after a crash with an uninsured driver.


Common Causes of Motorcycle Accidents in NH

The left-turn collision is the classic motorcycle case. A driver turns left across the path of an oncoming motorcycle, often after looking straight at it. Other frequent causes include rear-end collisions, unsafe lane changes, road hazards such as potholes, debris and gravel, and hit-and-run crashes.


What most of them share is a driver who failed to account for a narrower, less visible vehicle. That is an ordinary negligence question: whether the driver used reasonable care in the circumstances. It turns on the facts of the crash, not on the fact that the injured person was on a motorcycle.


If you've been involved in a car or truck accident, our car accident attorney page explains the shared legal principles.


Damages Available in NH Motorcycle Accident Cases


Man rides motorcycle on winding forest road in New Hampshire.

Injured motorcyclists may recover both economic and non-economic damages. Economic damages include medical expenses (emergency care, surgery, rehabilitation, future treatment), lost wages, diminished earning capacity, and property damage. Non-economic damages compensate for pain and suffering, emotional distress, loss of enjoyment of life, and permanent disfigurement or disability. For a detailed explanation, see our guide on non-economic damages in NH personal injury cases.


Interest is a piece of this that riders rarely hear about. Under RSA 524:1-b, when a verdict is rendered or a finding is made for pecuniary damages, the clerk of court adds interest to the damages running from the date of the writ to the date of judgment. The statute reaches personal injury damages by its own terms, and it does so even where the interest carries the judgment past a statutory liability ceiling.


Steps to Protect Your Claim After a Motorcycle Accident


The actions you take immediately after a motorcycle accident can significantly impact your claim's outcome:


  • Call 911 and request police response. An official accident report is critical evidence. Learn more about accident reports in NH.

  • Seek immediate medical attention, even if injuries seem minor. Delayed symptoms are common with TBI and internal injuries. Medical records created on the day of the accident are powerful evidence.

  • Document the scene: photograph your motorcycle, the other vehicle(s), road conditions, your injuries, and your riding gear.

  • Preserve your helmet and gear. Damaged equipment is evidence of impact severity.

  • Do not give recorded statements to insurance companies without speaking to an attorney first. Insurers use these statements to minimize your claim.

  • Contact an attorney promptly. Under RSA 508:4, you have three years to file a personal injury lawsuit in New Hampshire, but evidence degrades over time.


Insurance Challenges in Motorcycle Claims


Motorcycle accident claims face unique insurance challenges. Health insurers frequently assert a lien on any settlement or verdict, seeking reimbursement for medical expenses they covered. This subrogation right can significantly reduce your net recovery if not properly negotiated. Additionally, because New Hampshire does not mandate auto insurance, many at-fault drivers carry minimal or no coverage. In these situations, your own uninsured motorist coverage under RSA 264:15 becomes your primary source of compensation. Understanding your policy limits and coverage stacking options is critical before an accident occurs.


About the Author: Keith F. Diaz, Esq. is the founder of Apis Law, PLLC, a New Hampshire personal injury and employment law firm.


Attorney Diaz has been practicing in New Hampshire since 2003 and is admitted to practice in the State of New Hampshire (Bar No. 15831), the U.S. District Court for the District of New Hampshire, and the First Circuit Court of Appeals. He founded Apis Law in 2022 to provide dedicated, client-focused representation to individuals and families throughout New Hampshire.


Man riding a red motorcycle with Apis Law branding.

If you were injured in a motorcycle crash in New Hampshire, Apis Law offers a free consultation. Contact Apis Law or call (603) 785-1013 to discuss your claim with Attorney Keith F. Diaz.


Headshot of attorney Keith F. Diaz beside ABOUT THE AUTHOR, APIS LAW, and apislaw.com on a clean white page.

Frequently Asked Questions


Do I have to wear a helmet when riding a motorcycle in New Hampshire?

No. Under RSA 265:122, only riders under 18 must wear approved protective headgear in New Hampshire, and there is no adult helmet requirement. Riding without one does not bar your claim. Carriers do argue that a helmetless rider's injuries were worse than they should have been, and they try to convert that into a share of fault under RSA 507:7-d. New Hampshire law gives you ground to push back. In Thibeault v. Campbell, 136 N.H. 698 (1993), the New Hampshire Supreme Court held that seat belt nonuse is inadmissible to show negligence where the nonuse may have contributed to the injuries but was not a cause of the collision itself. The Court has not applied that holding to motorcycle helmets, and one justice dissented. Under RSA 507:7-d the burden of proving fault rests on the party alleging it.


Can I recover damages if I was partially at fault for my motorcycle accident?

Yes, as long as your fault does not exceed 50%. Under RSA 507:7-d, New Hampshire's modified comparative fault statute, you are barred from recovery only if you are 51% or more at fault. Below that line your damages are reduced in proportion to your share of the fault. The statute also places the burden of proving the existence and amount of your fault on the party alleging it, which in a motorcycle claim is almost always the insurer.


What damages can I recover after a motorcycle accident in NH?

You may recover economic damages, such as medical expenses, lost wages, diminished earning capacity and future care costs, and non-economic damages, such as pain and suffering, emotional distress and loss of enjoyment of life. Under RSA 524:1-b, when a verdict is rendered or a finding is made for pecuniary damages, the clerk of court adds interest to the damages from the date of the writ to the date of judgment.


How long do I have to file a motorcycle accident claim in New Hampshire?

Under RSA 508:4, you have three years from the date of injury to file a personal injury lawsuit in New Hampshire. This is a hard deadline. If you miss it, your claim is permanently barred regardless of its merits.


What should I do immediately after a motorcycle accident?

Call 911, seek immediate medical attention, document the scene with photos, preserve your helmet and gear as evidence, do not give recorded statements to insurance companies, and contact an attorney. Evidence quality degrades over time, so acting quickly strengthens your claim.

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