Ind. Code § 9-19-19-4
(b) This section does not apply to the driver of a vehicle:
(2) in which an individual required for medical reasons to be shielded from the direct rays of the sun is a habitual passenger.
The medical reasons must be attested to by a physician or optometrist licensed to practice in Indiana, and the physician's or optometrist's certification of that condition must be carried in the vehicle. The physician's or optometrist's certificate must be renewed annually.
(c) A person may not drive a motor vehicle that has a:
(4) rear back window;
that is covered by or treated with sunscreening material or is tinted with material that has a total solar reflectance of visible light of more than twenty-five percent (25%) as measured on the nonfilm side and light transmittance of less than thirty percent (30%) in the visible light range.
(d) Any treatment allowed under subsection (c) for a windshield may:
(f) A vehicle may be stopped to determine compliance with this section. However, a vehicle, the contents of a vehicle, the driver of a vehicle, or a passenger in a vehicle may not be inspected, searched, or detained solely because of a violation of this section.
[Pre-1991 Recodification Citation: 9-8-6-38(e); (f); (g).]
As added by P.L.2-1991, SEC.7. Amended by P.L.128-1995, SEC.1; P.L.12-2003, SEC.1; P.L.217-2014, SEC.42; P.L.164-2018, SEC.9.