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The route nationale 18 (RN18) is a trunk road (nationale)[1] in north east France.[2] The RN 18 was constructed in 1959.
Étain to Longwy (0-49km)
The road begins at Étain at a junction with the N3, heads north to Longuyon and then turns northeast to Longwy where the road meets the N52.[3] There the road forks as the D918: the north fork crosses the frontier to Belgium (N830) and the eastern fork enters Luxembourg as the N5.
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