Upper Hutt way on Saturday, Sunday, and public holidays. A notable feature of this section of railway is the Rimutaka Tunnel, the second-longest railway tunnel in New Zealand, which replaced the Rimutaka Incline in 1955. There are six railway stations within the boundaries of the city: Silverstream, Heretaunga, Trentham, Wallaceville, Upper Hutt (the main station for the city and outer terminus of electric services), and Maymorn (a request stop on the Wairarapa Line). Upper Hutt's main railway station was originally built in 1876 but has been rebuilt twice, firstly in 1955 and more recently in 2015. The most recent rebuild, jointly funded
Railway electrification in New Zealand Tunnel (1955) and the Kaimai Tunnel (1978). The Rimutaka Tunnel required an intermediate ventilation shaft. From 1967 diesel locomotives (D class) replaced electric locomotives (E class) on freight trains south of Paekakariki on the Kapiti Line after the track in some older tunnels was lowered, so diesels could run under the catenary into Wellington. On two existing electrified tunnels the electrified section was only a small part of the total line. Hence the Lyttelton Rail Tunnel was operated by diesel locomotives from 19 September 1970. The Otira Tunnel was long and steep, so for dieselisation from 1997 a door and