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
Rimutaka Incline the Rimutaka Incline Railway Heritage Trust was inaugurated with the intention of reinstating the Rimutaka Incline in four stages: Upper Hutt to Summit; Wellington to Upper Hutt (using KiwiRail's Wairarapa Line); Summit to Cross Creek; Cross Creek to Featherston. The base of operations is on land leased from KiwiRail at Maymorn. Largely thanks to the establishment of the Remutaka Rail Trail, most of the original formation has been preserved and is proposed to be incorporated into the reinstated rail operation, with new works required at Maymorn to link the original formation to the station yard and a deviation at Kaitoke