MEANS
Rajdhani - Inter-city fully air-conditioned superfast trains connecting the national capital, New Delhi with major metropolitan cities
Duronto - Non-stop point-to-point trains connecting major Indian cities
Sampark Kranti - Superfast trains that provide almost non-stop connectivity between States and the national capital, New Delhi
Shatapdi...
more... - Inter-city fully air-conditioned superfast trains connecting major Indian cities
Garib Rath - Fast fully air-conditioned trains subsidized for poor people
Jan Shatapdi - Inter-city superfast trains connecting major metropolitan cities, with low-priced accommodations. These trains can be considered a 'down-scale' version of Shatabdi trains.
Superfast - SuperFast Mail/Express trains making multiple stops
Mail/Exp - Regular Mail/Express trains making multiple stops