Texas Penal Code Section 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.
Texas Penal Code Section 49.01. DEFINITIONS
. In this chapter: (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 .08 or more.