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What is the purpose of the numbers on signs every mile along state highways?

April 26, 2017highways Numbers purpose signs State

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What is the purpose of the numbers on signs every mile along state highways?

1 Answer

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10 Posted

These are called reference post markers. They are installed every mile on all state highways. The beginning reference point is “0” at the west border of the state for east/west highways and “0” at the south border of the state for north/south highways.