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An advance railroad sign is round and has a yellow background with a black X and black R's on each side of the X. The sign at the site of the tracks is an X shaped sign that is white with black text and says "Railroad Crossing" with the words crossed on each leg of the X. Crossbuck.

See the related link for a site with pictures of US traffic signs.

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12y ago
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Q: What is the color and shape of a US Railroad Sign?
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