(a) An authority may participate in and designate board members to serve as representatives on boards, commissions, or public bodies, the purposes of which are to promote the development of joint toll facilities in this state, between this state and other states of the United States, or between this state and the United Mexican States or states of the United Mexican States.
(b) A fee or expense associated with authority participation under this section may be reimbursed from money in the authority's feasibility study fund.