The present invention refers to a P pneumatic tire for a guided vehicle, particularly for a metropolitan train, said pneumatic comprising a radial casing armor (1) and an upper armor (3) having at least a layer of circumferential reinforcement means, characterized in that layer(s) (31, 32, 33) of circumferential reinforcement means, on the one hand has(have) a null meridian curvature in the vulcanization mold, and on the other hand, said layer (s) is (are) diposed axially widthways, L31, L32, L33, on a rolling band (4), the thickness of said band being constant.
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