Railway electrification in New Zealand Railway electrification in New Zealand Railway electrification was initially adopted by the New Zealand Railways in New Zealand for long tunnels; the Otira Tunnel, the Lyttelton Rail Tunnel and the two Tawa Tunnels of the Tawa Flat Deviation. Electrification of Wellington suburban services started with the Johnsonville Line and Kapiti Line out of Wellington from the 1930s. Auckland suburban services were electrified in 2014–15. Electrification of long distance services on the North Island Main Trunk (NIMT) dates from 1986, although KiwiRail is now considering diesel operation of the NIMT. New long tunnels e.g. the Rimutaka Tunnel and the Kaimai Tunnel
Koralm Tunnel Koralm Tunnel The Koralm Tunnel is a railway tunnel that is under construction in Austria under the Koralpe mountain range. It is expected to be operational by 2022. The tunnel will be long, which will make it Austria's longest railway tunnel. Running at depths of up to below ground, the tunnel will be a part of the -long Koralm Railway which will link Graz with Klagenfurt. The Koralm tunnel will be composed of two tunnels running in parallel, each capable of carrying a single railway track, which will be linked together every . An emergency stopping point at the middle