Indian railways have class code designations. The 3A class refers to the AC, or air-conditioned, 3-tier sleeper car. The 3E class refers to the AC 3-tier economy car.
No much difference between first class and first class ac. Only AC is the difference. First class does not have AC.
Victorian Railways R class was created in 1951.
Commonwealth Railways GM class was created in 1951.
Palestine Railways H class was created in 1919.
Victorian Railways K class was created in 1922.
Victorian Railways Dd class was created in 1902.
Victorian Railways H class was created in 1941.
Victorian Railways S class was created in 1928.
Victorian Railways N class was created in 1925.
Victorian Railways C class was created in 1918.
Victorian Railways J class was created in 1954.
Victorian Railways X class was created in 1929.