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
Yimbun Railway Tunnel significant as a highly intact example of a concrete-lined railway tunnel constructed for Queensland's narrow-gauge railway lines. Concrete was first used as a tunnel lining in 1880 and since then has been used for approximately two dozen railway tunnels constructed in Queensland. Yimbun Railway Tunnel Yimbun Railway Tunnel is a heritage-listed tunnel at Sinnamons Lane, Harlin, Somerset Region, Queensland, Australia. It was designed by Queensland Railways and built from 1909 to 1910 by Queensland Railways. It was added to the Queensland Heritage Register on 27 November 2008. The Yimbun Railway Tunnel, located from Wulkuraka railway station, is a concrete-lined tunnel