Adoption of a rule is not subject to AS 42.40.180 or 42.40.190 if it
(1) relates only to the internal management of the corporation;
(2) relates to specific rates, tariffs, divisions, and contract rate agreements;
(3) relates to service schedules of the railroad;
(4) is directed to a specifically named person or to a group of persons and does not apply to the general public; or
(5) relates to the use of public works under the jurisdiction of the corporation if the effect of the order is indicated to the public by means of signs or signals.