Indiana Code Title 10. Public Safety § 10-11-6-3

Sec. 3. (a) A city council shall appropriate, as necessary, sufficient funds to pay for each mile traveled to and from the conferences, at a rate equal to the rate paid to state officers and employees.  The rate per mile shall change each time the state government changes its rate per mile.  The city council also shall pay a per diem for expenses of not more than fifteen dollars ($15) a day for each day or part of a day an authorized person is in attendance at a conference.

(b) A county council shall appropriate sufficient funds to pay for each mile traveled to and from the conferences at a rate determined by the county council.  The county council also shall pay a per diem for expenses of not more than fifteen dollars ($15) a day for each day or part of a day an authorized person is in attendance at a conference.