Definition of Intoxication Manslaughter - Texas Penal Code Section 49.08
§ 49.08. Intoxication Manslaughter.
(a) A person commits an offense if the person:
(1) operates a motor vehicle in a public place, operates an aircraft, a watercraft, or an amusement ride, or assembles a mobile amusement ride; and
(2) is intoxicated and by reason of that intoxication causes the death of another by accident or mistake.
(b) An offense under this section is a felony of the second degree.