Type of carriage used for each of transportation
The NZR 56-foot carriage is a class of 17.07 m (56 ft 0 in)-long railway passenger car formerly used on almost all long-distance rail transport in New Zealand, and still in service. Some have been preserved.
The first 56 ft carriages were built in 1927, being a development of the then-standard steel-panel Aa class NZR 50-foot carriages. These first six carriages were 50 ft (15.24 m) cars with lengthened underframes at the ends, and the cars retained the same bogie spacing as the 50 ft (15.24 m) carriages.[1] Designed for sleeper use, these cars were clad in wood initially. All were given the AA classification due to their limited running rights, and were numbered consecutively from AA 1616 to AA 1622. Later they were clad in steel and given new underframes to match the later 56 ft (17.07 m) cars.