Tex. Transportation Code § 370.252

(a) A director or employee of an authority may not:

(1) accept or solicit any gift, favor, or service that:

(A) might reasonably influence the director or employee in the discharge of an official duty; or

(B) the director or employee knows or should know is being offered with the intent to influence the director's or employee's official conduct;

(2) accept other employment or engage in a business or professional activity that the director or employee might reasonably expect would require or induce the director or employee to disclose confidential information acquired by reason of the official position;

(3) accept other employment or compensation that could reasonably be expected to impair the director's or employee's independence of judgment in the performance of the director's or employee's official duties;

(4) make personal investments that could reasonably be expected to create a substantial conflict between the director's or employee's private interest and the interest of the authority;

(5) intentionally or knowingly solicit, accept, or agree to accept any benefit for having exercised the director's or employee's official powers or performed the director's or employee's official duties in favor of another; or

(6) have a personal interest in an agreement executed by the authority.

(b) A person is not eligible to serve as a director or chief administrative officer of an authority if the person or the person's spouse:

(1) is employed by or participates in the management of a business entity or other organization, other than a governmental entity, that is regulated by or receives funds from the authority or the department;

(2) directly or indirectly owns or controls more than a 10 percent interest in a business or other organization that is regulated by or receives funds from the authority or the department;

(3) uses or receives a substantial amount of tangible goods, services, or funds from the authority or the department; or

(4) is required to register as a lobbyist under Chapter 305, Government Code, because of the person's activities for compensation on behalf of a profession related to the operation of the authority or the department.

(c) A person is not eligible to serve as a director or chief administrative officer of an authority if the person is an officer, employee, or paid consultant of a Texas trade association in the field of road construction or maintenance, public transportation, or aviation, or if the person's spouse is an officer, manager, or paid consultant of a Texas trade association in the field of road construction or maintenance, public transportation, or aviation.

(d) In this section, "Texas trade association" means a nonprofit, cooperative, and voluntarily joined association of business or professional competitors in this state designed to assist its members and its industry or profession in dealing with mutual business or professional problems and in promoting their common interests.

(e) A person is not ineligible to serve as a director or chief administrative officer of an authority if the person has received funds from the department for acquisition of highway right-of-way unless the acquisition was for a project of the authority.

(f) In addition to the prohibitions and restrictions of this section, directors are subject to Chapter 171, Local Government Code.