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Category:Colored U.S. Highway shields

English: Differing systems of color-coding were used on U.S. Route signs in a few states in the 20th century. The practice is now prohibited by highway standards.


This category has the following 2 subcategories, out of 2 total.

Media in category "Colored U.S. Highway shields"

The following 3 files are in this category, out of 3 total.