Haw. Rev. Stat. § 707-703: Negligent homicide in the second degree.

(1) A person commits the offense of negligent homicide in the second degree if that person causes the death of:

(a) Another person by the operation of a vehicle in a negligent manner; or

(b) A vulnerable user by the operation of a vehicle in a manner that constitutes simple negligence as defined in section 707-704(2).

(2) Negligent homicide in the second degree is a class C felony.