If a person operates a motor vehicle while intoxicated and negligently causes an accident that results in the death of another person, the operator may be charged with the criminal offense of intoxication manslaughter.

Some states have a broader definition of the criminal offense of intoxication manslaughter and may charge an intoxicated person who negligently causes the death of another person while operating a motor vehicle, an aircraft, a watercraft, or an amusement ride with the crime of intoxication manslaughter. Intoxication manslaughter is a felony offense and may be punished by significant jail or prison time.

Laws vary from state to state, and some states have criminal offenses such as vehicular manslaughter or vehicular homicide, as provided by the state’s statutes, and may charge an intoxicated person who negligently causes the death of another motorist with such a crime.

Intoxication manslaughter laws are generally located in a state's statutes—often in the penal or criminal code.

In New Hampshire, the relevant criminal offense for situations where an individual operates a motor vehicle while intoxicated and causes the death of another person is known as 'Negligent Homicide'. According to New Hampshire Revised Statutes, RSA 630:3, an individual can be charged with Negligent Homicide if they cause the death of another negligently, and this includes operating a motor vehicle under the influence of intoxicating liquor or drugs. Negligent Homicide in New Hampshire can be classified as a felony, and the penalties can be severe, including significant prison time. The state does not specifically use the term 'intoxication manslaughter', but the concept is similar to what some other states may define under that term or under vehicular manslaughter or vehicular homicide statutes. It's important to note that laws can vary widely from state to state, and the specific charges and penalties would be determined based on the exact circumstances of the incident and the applicable state law.