MTR Metro Cammell EMU (AC)

The East Rail line Metro Cammell EMU, also known as the Mid-Life Refurbishment train or MLR train, was a model of electric multiple unit built from 1980 to 1990 by Metro-Cammell for the original Kowloon-Canton Railway, now the East Rail line, in Hong Kong. The 29 sets were owned and first operated by the Kowloon-Canton Railway Corporation and were operated by the MTR Corporation after the 2007 merger. Sets were delivered in two batches in 1982 and 1983, with further sets reordered in 1986 and 1990, and refurbished trains were converted to fixed 12-car sets. The MLR was the only electric multiple unit of the Mass Transit Railway without regenerative braking. All of the sets were retired on 6 May 2022, the 40th anniversary of the electrification of the East Rail line.