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The ATMB motorway network lies in the heart of the highest mountains in Europe, within the Ain and Haute-Savoie departments. It consists of the Autoroute Blanche (A40), the Route Blanche (RN205) and the Mont Blanc Tunnel. Three routes through Haute-Savoie, mobilizing the ATMB teams respond 24/7, to tripling the safety, service and conservation requirements of this exceptional area.

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