Hill The Johnsonville Line out of Wellington, or the steep section of the North Auckland Line between Newmarket and Remuera in Auckland. See Over the hill. Hot water bottle A FS class steam heating van used to warm the carriages of passenger trains following the withdrawal of steam traction in 1968 (North Island) and 1971 (South Island) Hot water boy A member of a heritage railway, or a number of heritage railways, who only volunteers on days where engines are in steam. Will go out of their way to try and fire and drive the locomotive, and when successful will boast and be photographed beside the engine. Highsider The L, LA, LB, and LC wagons—so called for their high metal (LA, LC) or wooden (L, LB) sides I International Orange The NZR livery of yellow, orange-red and grey, more popularly known as Fruit Salad J Jigger A track inspection vehicle K KB country The section of the Midland Line between Springfield and Arthur's Pass famous for the use of KB class steam locomotives between 1939 and 1968 Kingston Flyer Heritage passenger train instituted in 1972 using steam locomotives AB 778 and AB 795, originally between Lumsden and Kingston and later truncated to the 14 km between Fairlight and Kingston L Longest xylophone in the world Former road and rail bridge on the now-closed portion of the Ross Branch south of Hokitika—named for the loud rattling its planks made Lowsiders The M, MA, MB, MC, and MCC wagons, so called for their low sides. These wagons had lower sides than the L-series 'highsider' wagons, and were often used for loads that could not fit into a highsider or did not warrant the use of one. Lokey Locomotive on a bush tramway. Abbreviation of the term 'locomotive', but shortened by bush workers and adopted by railway enthusiasts. M Matangi FT/FT class electric multiple unit used on the Wellington suburban network, chosen in 2008 in a public competition run by the Greater Wellington Regional Council, and comes from the Māori word matangi, meaning wind or breeze (in reference to Wellington's windy reputation) MAXX Blue Livery on Auckland rolling stock operated by Transdev Auckland Midland Red Livery used in the 1920s and 1990s on passenger carriages, DM/D class electric multiple units and some other rolling stock. It was first trialled on the carriages of the Parnassus Express, the predecessor of the Picton Express. Its