Indiana Code Title 12. Human Services § 12-23-5-5

Sec. 5. (a) Subject to subsection (b), if a court enters an order conditionally deferring charges that involve a violation of IC 9-30-5, the court shall do the following:

(b) A defendant may be granted probationary driving privileges only after the defendant's license has been suspended for at least thirty (30) days under IC 9-30-6-9.

(c) If a defendant has at least one (1) conviction for an offense under IC 9-30-5, the order granting probationary driving privileges under subsection (b) must, in a county that provides for the installation of an ignition interlock device under IC 9-30-8, prohibit the defendant from operating a motor vehicle unless the motor vehicle is equipped with a functioning certified ignition interlock device under IC 9-30-8.

(d) If a defendant does not have a prior conviction for an offense under IC 9-30-5, the court may, as an alternative to a license suspension under subsection (a)(1), issue an order prohibiting the defendant from operating a motor vehicle unless the motor vehicle is equipped with a functioning certified ignition interlock device under IC 9-30-8.  An order requiring an ignition interlock device must remain in effect for at least two (2) years but not more than four (4) years.