existing track. Option 3: Double Tracking and Resignalling to Rangiora As with option 2, this would involve the introduction of frequent services between Lyttelton and Islington, in addition to frequent services between Rangiora and Islington. Limited services would be provided south of Islington, and an upgrade of the Rangiora station would be included to cater for commuters from Woodend. Track works would include double tracking the Main North Line from Addington Junction to Rangiora and an upgrade of Addington Junction. Option 4: Double Tracking and Resignalling to Rangiora and Rolleston This would involve the introduction of frequent services between Lyttelton and Rolleston/Darfield, as well as frequent services between Rangiora and Rolleston/Darfield. Also suggested was the possibility of reopening closed branch lines to encourage the growth of, or a reduction in traffic to/from, areas such as Prebbleton (formerly on the Southbridge Branch) and Oxford (formerly on the Oxford Branch), etc. Track works would include new layouts at Addington and Rolleston, as well as the double tracking of the Main South Line out to Rolleston and the double tracking of the Main North Line out to Rangiora. Option 5: Double Tracking and Resignalling to Rangiora and Rolleston, plus the Construction of a Central City Underground Loop As with option 4, but services would also be provided to a central city station via a tunnel. This option was regarded as unviable, and not considered for future study. 2014 to 2017 Proposals and comments In 2014 and 2017 Labour announced as part of its election manifesto a proposal to reintroduce passenger commuter services north and south (2014) or south (2017) of Christchurch. There have been other proposals to reintroduce commuter passenger services north and/or south of Christchurch. 2018-2021 In May 2021 Transport Minister Michael Woods said that the government was keen to get rapid transit in the form of Light Rail or Bus Corridors moving in Christchurch Work on a new Waltham Mechanical Hub to centralise maintenance began in 2020. 2022–present On 16 February 2022 it was announced that ECan (Environment Canterbury) had voted unanimously to ask the Canterbury Regional Transport Committee to establish a working group to "investigate opportunities to progress passenger rail in Canterbury" and the ECan councillor Peter Scott said that it could run from the City(CBD)-Rolleston to as far north as Amberley. On 18 February 2022 it was announced that the committee had asked for more information before agreeing to