A person commits the criminal offense of intoxication assault if the person operates a motor vehicle while intoxicated and causes an accident that results in the serious bodily injury of another person.

Some states have a broader definition of intoxication assault and may charge an intoxicated person who negligently causes serious bodily injury to another person while operating a motor vehicle, an aircraft, a watercraft, or an amusement ride with the crime of intoxication assault.

Intoxication assault is a felony offense and may be punished by significant jail or prison time. Intoxication assault laws are generally located in a state's statutes—often in the penal or criminal code.

In Wyoming, the crime of causing serious bodily injury to another person while operating a vehicle under the influence is typically referred to as 'vehicular assault' rather than 'intoxication assault.' Under Wyoming law, specifically Wyoming Statutes section 6-2-106, a person is guilty of vehicular assault if they operate or attempt to drive a vehicle while under the influence of alcohol or drugs, and their conduct is the proximate cause of serious bodily injury to another person. This offense is a felony, and the penalties can include imprisonment, fines, and the suspension of driving privileges. The definition of serious bodily injury in Wyoming includes injuries that create a substantial risk of death or that cause serious permanent disfigurement or protracted loss or impairment of the function of any body part or organ. The specific penalties for vehicular assault in Wyoming can vary based on the circumstances of the case and the offender's criminal history.