Indiana Code Title 9. Motor Vehicles § 9-21-7-3

Sec. 3. (a) This section does not apply to a motorcycle or motor driven cycle.

(b) A motor vehicle must display at least two (2) lighted lamps, one (1) on each side at the front of the motor vehicle.

(c) Whenever a motor vehicle equipped with head lamps required under subsection (b) is also equipped with:

not more than a total of four (4) lamps described in this subsection on the front of a vehicle may be lighted at one (1) time when upon a highway.

(d) Passenger buses, trucks, truck tractors, and certain trailers, semitrailers, and pole trailers must display clearance and marker lamps, reflectors, and stop lights as required under this title when operated upon a highway.  Except as provided in subsection (e), all lamp equipment required on vehicles described in this subsection shall be lighted at the times specified in section 2 of this chapter.

(e) Clearance and sidemarker lamps are not required to be lighted on a vehicle described in subsection (d) when the vehicle is operated within a municipality where there is sufficient light to render clearly discernible persons and vehicles on the highway at a distance of five hundred (500) feet.