Indiana Code Title 9. Motor Vehicles § 9-21-7-2

Sec. 2. (a) Except as provided in subsection (b) and section 8 of this chapter, each vehicle upon a highway:

must display lighted head lamps and other illuminating devices as required for different classes of vehicles under this chapter.

(b) All lamp equipment required for vehicles described in IC 9-19-6, including each tail lamp required by law, shall be lighted at the times mentioned in subsection (a), except that clearance and sidemarker lamps are not required to be lighted on a vehicle when the vehicle is operated within a municipality if there is sufficient light to render clearly discernible persons and vehicles on the highway at a distance of five hundred (500) feet.