Current Indiana State Road Markers
Two-Digit Marker	Three-Digit Marker

Indiana's state road markers are printed with black letters and border on white shield and feature the state name. The two-digit marker is square and measures 24" X 24". The three-digit shield is rectangular and measures and 30" X 24". These signs have been in use since the late 1940's.

Current US Highway Markers
Used on guide signs (BGS)*	Used as trailblazer
Cutout version - used in some locations

Indiana uses the standard square US shield as used in most other states. on highway guide signs (BGS) a cut-out version of the shield is used. In some areas a plain borderless cut out shield is used (shown above).

Current Interstate Highway Markers
Two Digit Interstates	Three Digit Interstates	Downtown Indianapolis	Business Loops

Indiana's Interstate markers conform to those used in the rest of the United States. As in other states, the state name has been phased out of use on the shield, but there are still places where these older signs are still in service. In Downtown Indianapolis split route signs like the one shown above are used to help guide drivers to the freeways. Also Indiana currently does not have any interstate business routes at this time.

Historical Highway Markers
State road Marker used prior to 1948	Embossed US shield in early 1930's	Flat US shield used in the 1940's	Flat US shield used in mid 1950's

Historical Interstate Markers

These are shield's used on Indiana's highways in the past. the exact dates that highway markers changed to the newer versions is not certain. The old Indiana state road marker was an embossed marker. (The border, state outline and numbers on the marker were all raised.) The numbers were printed with a narrower squared font to fit inside the outline.

The earlier US shields were also embossed (see above picture) and earlier shields used a squared font. The lettering on the later signs was changed to the modern rounded highway font and flat non-embossed signs. More information about US signs used and their history is avaliable at US-HIGHWAYS.COM

The earlier version of the Interstate sheld featured the state name on the shield.

Conceptual Indiana Markers
New 2 digit marker	New 3 digit marker

What if Indiana's markers were redesigned. What would they look like. I put together a a small redesign of the hoosier state highway marker. These shields were created in 2008, and are a concept modeled somewhat after Indiana's state seal.