Low Poly Tangara. The Tangara (an Aboriginal Australian word meaning to go) is a class of electric multiple unit operated by Sydney Trains in Sydney, Australia. The Tangaras were delivered between 1988 and 1995, and are third-generation trains. A Tangara is a double-deck four-car set, with the two outer cars being driving control trailers (carrying a D prefix) fitted with one pantograph each and the middle two cars being non-control motor cars (carrying a N prefix). They are equipped with air conditioning and chopper control. Two subclasses of Tangara were built, the suburban sets targeted as T sets, and outer-suburban sets originally targeted as G sets. The T sets replaced the first generation of Sydney's electric rolling stock. The G sets were converted to suburban use and were re-targeted as additional T sets. Unlike most other Sydney Trains rolling stock the seats on the suburban T sets are fixed, meaning that half the seats face backwards.