What are Passenger, Ordinary, Express, and Fast Passenger trains?
In general, Passenger trains (also ‘ordinary passenger trains’, or ‘stopping passenger trains’) are the ones that stop at all, or nearly all, of the stations along a route. Most of these tend to be quite slow. Express trains skip many stations and stop at only selected ones. An express train need not be a particularly fast train, although there is often an expectation that it will run fairly fast, at least faster than the ordinary passengers on the same route. (See the term ‘superfast’ below.) Fast Passengers are an in-between class — while no real criterion appears to exist for labelling a train a fast passenger, but in general they stop at a lot of stations along the way (many more than for an express, but fewer than for an ordinary passenger) and have a higher average speed than the ordinary passenger services on the same section. They also generally have reservable sleeper coaches, something not seen in ordinary passenger trains. E.g., the Nagpur Tatanagar Fast Passenger has three
