Nō nā tata nei, i mahi a NSEN i tētahi kaupapa hou me ngā takirere takitoru e 635 ngā wahi. Kua wehea te tuku takirere i roto i ētahi puranga, kua tata oti ngā takirere maitai waro, kei te tukatukahia tonutia ngā takirere maitai kore waikura e toe ana. Koinei te kaupapa nui whakamutunga e mahihia ana e NSEN i te tau 2020.

I tēnei wiki, kua tukuna atu ki ngā kiritaki ngā takirere rerekē hou kua oti te hanga, te rahi WCB DN200 me te 350.