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Rules sign on Washington Metro car 4007
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Decommissioned transfer ticket machine
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Yellow Line train at Fort Totten
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Eight-car mark at West Falls Church station
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"NO TRESPASSING" sign
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Traffic lights outside Greensboro station
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"Don't Shut Door Ever"
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"No one allowed passed [sic] this point without 100% fall protection"
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Fuel-efficient vehicle parking at Ashburn station