For the purposes of this article, the following words and terms are defined as follows:

(1) "Division", unless otherwise indicated, means the Division of Public Railways within the Department of Commerce.

(2) "Secretary", unless otherwise indicated, means the executive and administrative head of the Department of Commerce or his designee.

(3) "Director or designee" means the person or persons appointed by the secretary, serving at his will and pleasure as his designee, to supervise and carry out the functions and duties of the Public Railways Division as provided for by law.