Motorcycle Accident Laws in New Hampshire (2026): Deadlines

A motorcycle crash in New Hampshire is handled as a personal injury claim, but riders face a distinct set of questions: the deadline to sue, the state fault rule, the helmet law, whether failing to wear a helmet can be used against you, and whether lane splitting is allowed. New Hampshire is one of only a few states with no adult helmet requirement, and it does not universally mandate auto insurance, both of which shape how these cases play out. This guide explains how New Hampshire answers each question. It is general legal information and attorney advertising, not legal advice, and reading it does not create an attorney-client relationship.

The deadline to sue in New Hampshire is three years

The statute of limitations is the legal deadline to file a lawsuit. In New Hampshire, a personal injury claim, including one from a motorcycle crash, generally must be filed within three years of the act or omission under RSA 508:4, with a discovery rule that can extend the clock when the injury and its cause could not reasonably have been found at the time. A wrongful death claim, brought when a rider is killed, is generally subject to the same three-year limitation, although a separate provision (RSA 556:11) can allow a longer outer period in certain situations. Claims against a governmental unit have their own notice and timing rules, so the deadlines should be confirmed early. A court will normally dismiss a late case no matter how strong it is.

Fault rule: modified comparative fault with a 51 percent bar

New Hampshire follows modified comparative fault under RSA 507:7-d. A jury assigns each party a share of fault. The injured rider's contributory fault does not bar recovery as long as that fault was not greater than the fault of the defendant or the combined defendants; the award is then diminished in proportion to the rider's share. If the rider's fault is greater than the defense side's, the rider recovers nothing. In practice this is a 51 percent bar: a rider found exactly 50 percent at fault can still recover half, but a rider found 51 percent or more at fault recovers zero. A rider found 20 percent at fault with 100,000 dollars in damages would recover 80,000 dollars.

This rule matters for riders because insurers sometimes try to push a motorcyclist's fault over the 50 percent line, leaning on a bias that riders are reckless. Clear documentation that the rider was riding lawfully is one way that pressure is met.

No-fault, PIP, and the insurance backdrop

New Hampshire is not a no-fault state, so there is no PIP threshold to clear before suing; recovery runs through fault against the at-fault driver and that driver's insurer. New Hampshire is also unusual in that it does not universally require drivers to carry auto liability insurance. A driver must instead be able to meet financial-responsibility obligations if they cause a crash, and many drivers do carry insurance. If a policy is purchased, the minimum liability limits are 25,000 dollars per person and 50,000 dollars per accident for bodily injury plus 25,000 dollars for property damage (25/50/25), uninsured-motorist coverage at matching limits is required, and a minimum of medical payments coverage applies. Because some at-fault drivers may be uninsured, a rider's own uninsured and underinsured motorist coverage can be especially important in New Hampshire.

Helmet law: no requirement for adults

New Hampshire does not require adults to wear a motorcycle helmet. Under RSA 265:122, only a person under 18 years of age must wear approved protective headgear when driving or riding on a motorcycle, and an operator who carries an under-18 passenger without proper headgear commits a violation. There is no helmet requirement for riders 18 and older. New Hampshire is one of only three states, along with Illinois and Iowa, with no adult helmet law at all. Eye protection and other equipment rules still apply, but the choice to wear a helmet is left to each adult rider.

Can not wearing a helmet hurt your case (the helmet defense)

Because an adult rider in New Hampshire is acting lawfully when riding without a helmet, that choice generally cannot be used to bar or reduce a claim, and it cannot be used to prove the rider caused the crash. The decision not to wear optional safety equipment is not the kind of fault that ordinarily reduces an injured person's recovery, and the at-fault driver remains responsible for causing the collision. A defendant may still try to raise a missing helmet on the question of how severe head injuries should have been, but where helmet use was not required that argument is weak and is not a reliable defense. For a rider under 18 who was required to wear a helmet, the analysis can differ. The practical point for adult riders is that lawful helmet non-use should not be treated as fault.

Lane splitting is illegal in New Hampshire

New Hampshire does not permit lane splitting or lane filtering. Under RSA 265:121, a motorcycle is entitled to the full use of a lane, but no person may drive a motorcycle on a roadway between lanes of traffic or between adjacent lines or rows of vehicles, and a motorcycle may not overtake and pass in the same lane occupied by the vehicle being passed. Riding between stopped or moving cars is therefore a traffic violation, and a rider who was lane splitting at the time of a crash should expect that conduct to be raised on the question of fault.

Damage caps and wrongful-death limits

New Hampshire does not cap compensatory damages such as medical bills, lost wages, and pain and suffering in an ordinary motorcycle injury case. Wrongful death is different: RSA 556:12 caps certain loss-of-relationship damages, and those caps were raised effective January 1, 2025. A surviving spouse's recovery for loss of comfort, society, and companionship is capped at 500,000 dollars, and a child's or parent's recovery for loss of familial relationship is capped at 300,000 dollars per individual claimant. Economic losses such as the value of lost earnings and medical and burial expenses are recoverable separately and are not subject to those particular caps. These limits apply only in death cases, not in injury claims.

Why motorcycle cases are different

Motorcycle crashes tend to cause more serious injuries than car crashes because a rider has so little protection, which means higher medical bills and a more aggressive insurance defense. Riders also face the helmet and lane-splitting questions above, plus a documented bias against motorcyclists among some jurors and adjusters. The classic crash is a car turning left across an oncoming motorcycle, with the driver claiming they never saw the bike. All of this is why physical evidence and a clear record of the rider's lawful conduct carry real weight, especially given that some New Hampshire drivers may be uninsured.

Evidence and how to evaluate your options

If you or a family member was hurt in a New Hampshire motorcycle crash, get medical care and keep the records, obtain the crash report, and photograph the scene, the bike, and your gear. Note the other driver's information, including whether they were insured, and any witnesses. Then speak promptly with a licensed New Hampshire attorney, both because of the three-year deadline (and any governmental notice deadlines) and because early evidence fades. Most motorcycle accident attorneys offer a free consultation and work on a contingency basis, meaning no upfront fee and payment only out of any recovery. No outcome or amount can be promised; every case turns on its own facts. This article is general information, not legal advice.