The 1967 Stock is a class of deep-level tube stock currently in operation on the Victoria line. , it is the oldest type of deep tube stock in service on London Underground. Each train consists of two four-car units coupled together; trains are equipped for automatic train operation (ATO). The train operator has control over the doors, and starts the train by simultaneously pressing two buttons in the cab to start the automatic process. The trains were built with wrap-around windows in the driving cabs, the first London Underground trains so equipped. The total order of 316 cars (39.5 trains) was built by Metro-Cammell and later refurbished at Rosyth.