Indiana Code Title 9. Motor Vehicles § 9-19-6-6

Sec. 6. (a) This subsection does not apply to a motorcycle, motor vehicle manufactured before January 1, 1956, or motor driven cycle. A person may not:

in Indiana a motor vehicle unless the vehicle is equipped with at least two (2) stoplights meeting the requirements of section 17 of this chapter.

(b) Except as provided in subsection (c), a person may not:

in Indiana a motorcycle, motor vehicle manufactured before January 1, 1956, or motor driven cycle unless the vehicle is equipped with at least one (1) stoplight meeting the requirements of section 17 of this chapter.

(c) A motorcycle manufactured before January 1, 1956, is not required to be equipped with a stoplight under subsection (b) if the motorcycle is not operated at the times when lighted head lamps and other illuminating devices are required under IC 9-21-7-2.

(d) This subsection does not apply to a motorcycle or motor driven cycle.  A person may not:

a motor vehicle, trailer, or semitrailer registered in Indiana and manufactured or assembled after January 1, 1956, unless the vehicle is equipped with mechanical or electrical turn signals meeting the requirements of section 17 of this chapter.