 The carriages are formed into three sets of between three and eight carriages, consisting of (from the Masterton end of train) an SWG, an SW, an SWS, and then the remaining SW carriages.Because of the short platforms at Renall Street, Solway, Matarawa and Maymorn stations, selective door operation is employed and passengers are asked to alight from the three northernmost (Masterton-end) carriages.In July 2013, the six SE class BR MkII carriages, which had been used as a temporary measure with top-and-tailed EO class electric locomotives in Wellington for two years until the arrival of the new "Matangi" FP/FT class EMUs, were introduced on the Wairarapa Connection.