AUTOROUTES ET TUNNEL DU MONT-BLANC (ATMB)
ATMB is the concession holder for the 110 km of the Autoroute Blanche (A40), which links Châtillon-en-Michaille (Ain) and Le Fayet (Haute Savoie), and its two branches to Switzerland (A401 A411).
It also manages the 11.6 km of the Mont-Blanc tunnel.
The Autoroute Blanche links some thirty municipalities and is a privileged access route to the stations. Given the infrastructure and operating costs (bridge, tunnels, etc.) this motorway is not the most economical but it is a time-saver in terms of traffic, abundant in this high Savoyard sector and bordering Switzerland.
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