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Some events in the Hautes Alpes in july can bring about traffic disruptions:
Wednesday 23 July : “Tour de France”
Galibier pass closed from July the 22nd - 12am Access closed to the valley of Serre Chevalier from 8.20am to 3pm on 23/07.
Thursday 24 July : “Itinéraires partagés”
Galibier pass closed to traffic, only for cyclists, from 9am to 12am.
Friday 25 July : “Itinéraires partagés”
Izoard pass closed to traffic, only for cyclists, from 9am to 12am.