Ind. Code § 8-3-17-1
Upon the application in writing of a company owning, leasing, using, or operating a railroad in Indiana accompanied by the statements of three (3) reputable Indiana citizens testifying to the moral character of the applicant, the Indiana department of transportation shall appoint and commission persons the company designates and the department finds to be suitable and qualified persons, to act as policemen for the company, upon the premises of the company, or elsewhere within Indiana, when engaged in the discharge of their duties as policemen for that company. Every policeman appointed shall be known as a railroad policeman and shall be a person of good moral character. The policeman shall be commissioned so long as the policeman is employed by the company on whose application the policeman was appointed, unless the policeman's commission is sooner revoked by the Indiana department of transportation for good cause shown, or by the company on whose application the railroad policeman was appointed, as provided in section 8 of this chapter.
IC 8-3-17-1