Sec. 49.01. DEFINITIONS:
(1) "Alcohol concentration" means the number of grams of alcohol per:
(A) 210 liters of breath;
(B) 100 milliliters of blood; or
(C) 67 milliliters of urine.
(2) "Intoxicated" means:
(A) not having the normal use of mental or physical faculties by reason of the introduction of alcohol, a controlled substance, a drug, a dangerous drug, a combination of two or more of those substances, or any other substance into the body; or
(B) having an alcohol concentration of 0.08 or more.
(3) "Motor vehicle" has the meaning assigned by Section 32.34(a).
(4) "Watercraft" means a vessel, one or more water skis, an aquaplane, or another device used for transporting or carrying a person on water, other than a device propelled only by the current of water.

Sec. 49.031. POSSESSION OF ALCOHOLIC BEVERAGE IN MOTOR VEHICLE.
(a) In this section:
(1) "Open container" means a bottle, can, or other receptacle that contains any amount of alcoholic beverage and that is open, that has been opened, that has a broken seal, or the contents of which are partially removed.

Sec. 49.04. DRIVING WHILE INTOXICATED.
(a) A person commits an offense if the person is intoxicated while operating a motor vehicle in a public place.
(b) Except as provided by Subsection (c) and Section 49.09, an offense under this section is a Class B misdemeanor, with a minimum term of confinement of 72 hours.
(c) If it is shown on the trial of an offense under this section that at the time of the offense the person operating the motor vehicle had an open container of alcohol in the person's immediate possession, the offense is a Class B misdemeanor, with a minimum term of confinement of six days.

Sec. 49.045. DRIVING WHILE INTOXICATED WITH CHILD PASSENGER.
(a) A person commits an offense if:
(1) the person is intoxicated while operating a motor vehicle in a public place; and
(2) the vehicle being operated by the person is occupied by a passenger who is younger than 15 years of age.
(b) An offense under this section is a state jail felony.

Sec. 49.05. FLYING WHILE INTOXICATED.
(a) A person commits an offense if the person is intoxicated while operating an aircraft.
(b) Except as provided by Section 49.09, an offense under this section is a Class B misdemeanor, with a minimum term of confinement of 72 hours.

Sec. 49.06. BOATING WHILE INTOXICATED.
(a) A person commits an offense if the person is intoxicated while operating a watercraft.
(b) Except as provided by Section 49.09, an offense under this section is a Class B misdemeanor, with a minimum term of confinement of 72 hours.

Sec. 49.07. INTOXICATION ASSAULT.
(a) A person commits an offense if the person, by accident or mistake:
(1) while operating an aircraft, watercraft, or amusement ride while intoxicated, or while operating a motor vehicle in a public place while intoxicated, by reason of that intoxication causes serious bodily injury to another; or
(2) as a result of assembling a mobile amusement ride while intoxicated causes serious bodily injury to another.
(b) In this section, "serious bodily injury" means injury that creates a substantial risk of death or that causes serious permanent disfigurement or protracted loss or impairment of the function of any bodily member or organ.
(c) An offense under this section is a felony of the third degree.

Sec. 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.

Sec. 49.09. ENHANCED OFFENSES AND PENALTIES.
(a) Except as provided by Subsection (b), an offense under Section 49.04, 49.05, 49.06, or 49.065 is a Class A misdemeanor, with a minimum term of confinement of 30 days, if it is shown on the trial of the offense that the person has previously been convicted one time of an offense relating to the operating of a motor vehicle while intoxicated, an offense of operating an aircraft while intoxicated, an offense of operating a watercraft while intoxicated, or an offense of operating or assembling an amusement ride while intoxicated.
(b) An offense under Section 49.04, 49.05, 49.06, or 49.065 is a felony of the third degree if it is shown on the trial of the offense that the person has previously been convicted:
(1) one time of an offense under Section 49.08 or an offense under the laws of another state if the offense contains elements that are substantially similar to the elements of an offense under Section 49.08; or
(2) two times of any other offense relating to the operating of a motor vehicle while intoxicated, operating an aircraft while intoxicated, operating a watercraft while intoxicated, or operating or assembling an amusement ride while intoxicated.