Authority: IC 8-8-1-12; IC 8-23-2-6

Affected: IC 8-3-1-21; IC 8-8-1-11; IC 8-9-1-4

Sec. 13. Each warning sign shall meet the following minimum specifications:

1. (1) It shall be rectangular and constructed with dimensions of no less than twenty-four (24) inches in height and sixteen (16) inches in width.
2. (2) The sign shall be constructed of metal or wood and shall have a flat white background and black lettering.

3. (3) Where less than statutory lateral clearance is maintained the sign shall be worded as follows:

   1. The word "WARNING" shall be printed on the sign with letters at least three (3) inches in height and no less than three-eighths (3/8) inch in letter line or stroke width, with the top edge of letters within two (2) inches of the top edge of the sign background. The words, "No Clearance For Man On Side Of Car," shall be printed on the sign in letters no less than one and one-half (11/2) inches high with brush strokes of at least one-fourth (1/4) inch and placed three (3) lines below the word "WARNING."
4. (4) Where less than statutory vertical clearance is maintained the words, "WARNING" and "No Clearance For Man On Top Of Car," shall be printed on the sign in accordance with the specifications set forth in subdivision (3).

(Indiana Department of Transportation; 105 IAC 5-4-13; filed May 7, 1982, 2:05 p.m.: 5 IR 1181; filed Aug 8, 1989, 3:30 p.m.: 12 IR 2221; readopted filed Nov 7, 2001, 3:20 p.m.: 25 IR 899; readopted filed Jun 14, 2007, 2:45 p.m.: 20070627-IR-105070237RFA; readopted filed Oct 2, 2013, 11:39 a.m.: 20131030-IR-105130295RFA; readopted filed Oct 4, 2019, 9:49 a.m.: 20191030-IR-105190422RFA; readopted filed Oct 21, 2025, 3:46 p.m.: 20251112-IR-105240645RFA; errata filed Nov 20, 2025, 1:08 p.m.: 20251203-IR-105250705ACA) NOTE: Transferred from Department of Transportation (100 IAC 6-4-13) to Indiana Department of Transportation (105 IAC 5-4-13) by P.L.112-1989, SECTION 5, effective July 1, 1989.