Ind. Code § 22-11-16-3
(a) The rules required by this chapter must include the following requirements:
(b) The emergency signs required by subsection (a) must contain the following information:
(c) In addition, the rules required by this chapter must include requirements for the letter size, color, content, location, and overall size of the emergency signs required by this chapter.
As added by Acts 1982, P.L.139, SEC.1.