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
Dudley Railway Tunnel trains were still allowed to use the line. It finally closed to all trains on 19 March 1993, when the section of railway between Walsall and Brierley Hill was closed after some 150 years in use. A cable laying train passed through the tunnel on 1 July 1993 - nearly four months after the line was officially closed. The railway line through Dudley is scheduled to reopen in 2023 as part of an extension to the Midland Metro,although the Metro route would not include the railway tunnel. The reutilised line will also be designed to carry heavy goods trains, which