The line 55 ZOU bus (ex line LER 35) between Briançon and Grenoble via the Alpine resort of Serre-Chevalier is part of the Provence-Alpes-Côte-d’Azur region’s bus network, which provides inter-urban and trans-departmental connections to make travelling easier.
See this page for practical information and links to timetables and stops:

The line 55 ZOU bus, also known as the regional express line (LER 55), takes you on your daily, holiday or weekend journeys between Briançon in the Provence-Alpes-Côte-d’Azur(PACA) region and Grenoble via the Serre-Chevalier ski resort in the Auvergne-Rhône-Alpes region.
Bus line 55 ZOU
The 55 ZOU bus runs between the Briançonnais community of communes in the Alpes-Maritimes and Grenoble-Alpes Métropole in Isère.
You can be driven between Briançon SNCF station and Grenoble SNCF/coach station, where connections are available:
- TER, TGV (via Briançon and Grenoble), long-distance bus (Grenoble) or hire a car.

Bus line 55 ZOU : Briançon Grenoble
This ZOU LER PACA bus route passes through the following towns and stops:
- Briançon (SNCF station, Place de l’Europe, La Berard shopping centre)
- Saint-Chaffrey / Serre-Chevalier (Mairie, Chantemerle)
- La Salle-les-Alpes (Fréjus Pré Long)
- Le Monêtier-Les-Bains (Les Guibertes, Church, Col du Lautaret)
- Villar-d’Arène (Les Agneaux)
- La Grave / La Meije (Tourist Office, Les Fréaux)
- Le Freney-d’Oisans (Village, Halte routière)
- Le Bourg-d’Oisans (Rest area)
- Grenoble (Bus station).

Timetables and stops
Consult timetables and bus stops for the 55 ZOU LER bus between Briançon and Grenoble:
- Until 18 December 2025
Reader, instructions for use (French)
- From 19 December 2025 to 4 January 2026
- From 5 January to 5 April 2026
See also
Travel+
- ZOU PACA, Wikipedia





