Texas Transportation Code - TRANSP § 724.012. Taking of Specimen

(1) while intoxicated was operating a motor vehicle in a public place, or a watercraft; or

(2) was in violation of Section 106.041, Alcoholic Beverage Code.

(1) the officer arrests the person for an offense under Chapter 49, Penal Code, involving the operation of a motor vehicle or a watercraft;

(2) the person refuses the officer's request to submit to the taking of a specimen voluntarily;

(3) the person was the operator of a motor vehicle or a watercraft involved in a collision that the officer reasonably believes occurred as a result of the offense; and

(4) at the time of the arrest, the officer reasonably believes that as a direct result of the collision any individual has died, will die, or has suffered serious bodily injury.

(1) the person was the operator of a motor vehicle or a watercraft involved in a collision that the officer reasonably believes occurred as a result of the offense and, at the time of the arrest, the officer reasonably believes that as a direct result of the collision an individual other than the person has suffered bodily injury and been transported to a hospital or other medical facility for medical treatment;

(2) the offense for which the officer arrests the person is an offense under Section 49.045or 49.061, Penal Code; or

(3) at the time of the arrest, the officer possesses or receives reliable information from a credible source that the person:

(1) obtains a warrant directing that the specimen be taken; or

(2) has probable cause to believe that exigent circumstances exist.