(a) Within thirty (30) days after the filing of a petition, the Arkansas Department of Transportation shall proceed to make a personal inspection of the conditions complained of and investigate the objects sought to be accomplished by the petitioners. The department shall have the right and power to summon and swear witnesses. The summons shall be served by any sheriff, constable, or deputy having legal jurisdiction.
(b) The department shall determine the amount, degree, and character of construction, equipment, changes, and enlargements of stations and depots which should be supplied by the railroad, railroad company, its lessee, or operator. The department shall have the power and authority to require a reasonable train service for each and every such railroad station and depot within the State of Arkansas, and its finding shall be binding upon all such railroads within the State of Arkansas.
(c) The department shall file a copy of its findings and decrees with the Secretary of State, the Attorney General, and the circuit clerk of the county wherein the decree is granted.
(d) The department shall serve notice upon the defendant railroad company by delivering a copy of its findings and decrees to the nearest local station agent and by sending by registered mail a copy to the superintendent, general manager, lessee, or operator of the railroad or railroad company.