Tex. Transportation Code § 701.003: DUTIES.

(a) A county traffic officer shall:

(1) be a motorcycle rider when practicable;

(2) cooperate with the police department of each municipality in the county to enforce state traffic laws in that municipality and in the county;

(3) enforce state laws that regulate the operation of a motor vehicle on a highway, street, or alley; and

(4) remain on and patrol the highway at all times when performing the officer's duties.

(b) An officer may leave a highway only in pursuit of an offender the officer is unable to apprehend on the highway.

Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.