Rimutaka Tunnel the first fully dieselised line in New Zealand. Today, DBR, DC, DFT and DX class locomotives run the route. There have been proposals to electrify the tunnel and the Wairarapa line as far north as Masterton as an extension of the Wellington suburban electrification. The tunnel was designed to enable catenary to be installed but this has not happened, and the catenary finishes just north of Upper Hutt station. In 2007, Greater Wellington Regional Council rejected a call to electrify the tunnel, on the basis that patronage did not justify the expenditure, and that the tunnel would "have to be
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