Texas Transportation Code - TRANSP § 251.159. Delegation of Commissioners' Authority

(a) This section applies only to a county with a population of more than 78,000.

(b) The commissioners court of a county may delegate to the county engineer or other county employee any function of the commissioners court under this subchapter, except as provided by Subsection (e).  An action of the county engineer or other county employee under this section has the same effect as if the action were an action of the commissioners court.

(c) Before issuing a traffic regulation under this subchapter, the commissioners court, in lieu of publishing notice required by a law other than this subchapter, may give notice of the proposed regulation by posting a conspicuous sign in any location to be affected by the regulation.

(d) The commissioners court is not required to hold a public hearing on the proposed traffic regulation unless a resident of the county requests a public hearing.  The request must be in writing and made before the eighth day after the later of:

(e) If a public hearing is requested, the commissioners court may not delegate the duty to hold the hearing.