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Three-digit U.S. route shield

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sign1 New Jersey Turnpike shield
sign1 Michigan State Trunkline single-digit shield
sign1 Exit number sign with speed advisory
sign1 Rest area
sign1 Three-digit state route shield, Alabama
sign1 Three-digit county route shield, New Jersey
sign1 Missouri supplemental route shield
sign1 Reference route marker, New York
sign1 Two-digit state route shield, New York
sign1 Single-digit state route shield
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