The Lyon Metro is the metro system of Lyon, France. It first opened in 1978 . The Lyon Metro currently consists of four lines, serving 40 stations, and comprising 32.0km of route. It is part of the Transports en Commun Lyonnais system of public transport, and is supported by Lyon's network of tramways.Unlike all other French metro systems, but like the SNCF and RER, Lyon Metro trains run on the left. This is the result of an unrealised project to run the metro into the suburbs on existing railway lines. The loading gauge for lines A, B, and D is 2.90m, more generous than the average for metros in Europe. The loading gauge for line C is 2.78m. The Lyon Metro owes its inspiration to the Montreal Metro which was built a few years prior, and has similar rubber-wheel cars and station design. The metro had 740,000 daily weekday boardings in 2011.RoutesThe Lyon Metro consists of four lines, A, B, C and D, each identified on maps by different colours:Lines A and BLine A were constructed by cut-and-cover and went into service on May 2, 1978, as the inaugural lines of the Lyon Metro. Trains on both lines run on rubber tyres rather than steel wheels.