The SNCF railroad automotor Z 604 Chamonix from 1958.
The Z 600 are electric railcars used on the Saint-Gervais – Vallorcine line. Their power supply is provided by a third rail.
Eight in number, they were delivered in 1958 accompanied by four ZR 20600 trailers. They provided passenger trains until 2008, and works trains until 2017.