Authority: IC 8-23-2-6; IC 8-23-20-25

Affected: IC 8-23-20

Sec. 18. (a) Signs located within adjacent areas may be illuminated, except for any sign that:

1. (1) contains, includes, or is illuminated by any flashing, or moving light or lights;

2. (2) is not effectively shielded to prevent beams or rays of light from being directed at any portion of the main-traveled way on a control route, if it:

   1. (A) is of such intensity or brilliance as to cause glare or to impair the vision of the driver of any motor vehicle; or
   2. (B) otherwise interferes with any driver's operation of a motor vehicle; or
3. (3) obscures or interferes with the effectiveness of an official traffic sign, device, or signal.

(b) Notwithstanding anything to the contrary in this section, changeable message signs or signs giving public service information such as time, date, temperature, weather, or similar information may be illuminated so long as each such sign complies with subsection (a)(2) and (a)(3).

(Indiana Department of Transportation; 105 IAC 7-4-18; filed Jul 24, 2019, 8:08 a.m.: 20190821-IR-105170337FRA; readopted filed Oct 21, 2025, 3:46 p.m.: 20251112-IR-105240645RFA)