The process for selecting the designated representatives to the cooperating committee shall be established by law pursuant to this section as follows:
A. the persons authorized to represent the state as the designated representatives to the cooperating committee shall be the chair of the standing senate corporations and transportation committee and the chair of the house transportation committee or a legislator or state agency official that the chair designates; and
B. the chairs designated in Subsection A of this section shall also designate one alternate designated representative who shall also be a legislator or state agency official to serve in the absence of the designated chair.