(a) A state agency participating in the alert system shall:
(1) cooperate with the department and assist in developing and implementing the alert system; and
(2) establish a plan for providing relevant information to its officers, investigators, or employees, as appropriate, on activation of the alert system.
(b) In addition to its duties as a state agency under Subsection (a), the Texas Department of Transportation shall establish a plan for providing relevant information to the public within 50 miles of an active shooter for which an alert has been issued through an existing system of dynamic message signs located across the state.