Ind. Code § 9-19-15-3
A vehicle transporting explosives must meet one (1) of the following requirements:
(2) Have displayed on the rear of the vehicle a red flag not less than twenty-four (24) inches square marked with the word "danger" in white letters six (6) inches high.
[Pre-1991 Recodification Citation: 9-8-6-43(a) part.]
As added by P.L.2-1991, SEC.7.