Tram systems in Grenoble
Grenoble is a city in the Isère department of France’s Auvergne-Rhône-Alpes region. It lies at the meeting of the Isère and Drac rivers, surrounded by the Chartreuse, Vercors and Belledonne mountain ranges. The city is an important centre for higher education, scientific research and technology, with a historic centre beneath the hilltop Bastille fortress.
Public transport in Grenoble and the surrounding metropolitan area is centred on the M réso network, combining trams with an extensive bus network. Bus services include the principal Chrono routes, local Proximo routes and Flexo services for less densely populated areas. Regional and mainline trains provide connections beyond the metropolitan area, with interchanges between rail and tram services at several stations.
Grenoble’s modern tram system opened in 1987 and now comprises five lines, designated A, B, C, D and E. The network links the city centre and surrounding communes with destinations including Grenoble railway station, the university campus, the hospital complex and the scientific district. Several lines share sections of track, providing overlapping services through parts of the urban area.
Accessibility has been a defining feature of Grenoble’s modern tramway since its opening. The system was designed to accommodate passengers with reduced mobility, and the tram network remains fully accessible.
M TAG — M réso
The tram system is operated by M TAG, a publicly owned company responsible for Grenoble’s metropolitan bus and tram services on behalf of the SMMAG (Syndicat Mixte des Mobilités de l’Aire Grenobloise), the transport authority. Services are presented to passengers under the M réso brand.
Grenoble’s tramway history predates the present system by almost a century. Steam tramways served the area from 1894, followed by the first electric urban services in 1897. Alongside the city network, longer routes connected Grenoble with surrounding towns and villages, supporting both everyday travel and tourism. Competition from buses, trolleybuses and private cars gradually displaced the tramways, with the last services closing in 1952.
Plans for a modern tramway developed during the 1970s and early 1980s. A local referendum in June 1983 approved its return, and Line A opened in 1987. Grenoble became the second French city, after Nantes, to reintroduce a modern tram system following the closure of its original network.
The new tramway was particularly significant for its approach to accessibility. Its vehicles incorporated a low-floor section, allowing passengers with reduced mobility to board directly from suitably designed platforms. Accessibility was therefore built into the system from the outset, rather than added as a later adaptation.
Line B opened in November 1990, connecting the railway station and city centre with the university campus. Both original lines were subsequently extended, with Line A reaching further into Échirolles and Line B expanding towards the Cité Internationale and, in 2014, the scientific district on Grenoble’s Presqu’île.
Line C followed in May 2006, linking Seyssins and Saint-Martin-d’Hères through Grenoble’s main boulevards. Line D opened in October 2007, initially providing a short connection between Saint-Martin-d’Hères and the university area.
The fifth line, E, opened in stages in 2014 and 2015, creating a north–south corridor between Grenoble and the communes to its north-west. Its extension to Fontanil-Cornillon opened in July 2015. Line A was extended south to Pont-de-Claix in December 2019.
In August 2024, Line D was extended to Grenoble railway station using existing tracks shared with Line B. This converted the formerly short route into a direct connection between Saint-Martin-d’Hères, the hospital area, central Grenoble and the station.
The wider public transport network adopted the M réso brand in September 2024, bringing together the former M TAG and M TouGo networks and integrating selected regional bus routes. Grenoble’s tramway became part of this unified network for the wider urban area.
Grenoble’s tramway is a conventional steel-wheel system using standard-gauge track (1,435 mm). It is electrified at 750 V DC, supplied through overhead wires and collected by roof-mounted pantographs.
The network runs at street level, predominantly on track reserved for trams, with paved sections through urban areas and grassed track along parts of the wider corridors. Several lines share tracks, particularly through central Grenoble. Traffic signals give trams priority at road junctions, while dedicated tram signals control movements through junctions and reversing areas.
Trams are stored and maintained at two depots: Eybens, established for the original modern network, and Gières, which provides additional stabling and maintenance facilities for the expanded system.
The fleet comprises two generations of Alstom vehicles: the original Tramway Français Standard (TFS) trams and the newer Citadis 402 vehicles. M TAG lists 53 TFS trams and 50 Citadis trams.
The TFS vehicles have partially low-floor interiors, with raised seating areas towards the ends. Their low entrances were an important innovation when the network opened in 1987, allowing passengers with reduced mobility to board from the platforms. The longer Citadis vehicles have fully low-floor interiors, providing more continuous accessible space throughout the tram. Both types are articulated and bidirectional, with driving cabs at each end.