Transportation in India - By Train
India boasts the biggest network of railway lines in the world, and the rail system is surprisingly efficient. Luxurious it is not, but India's railways are perhaps the best way to get to know the country and its people. A few important tips regarding rail travel:Train tickets are in high demand, especially during the summer and winter breaks. This means that without careful planning, it may be next to impossible to get tickets for long distance travel (for example from New Delhi to Bombay). However foreigners can get tickets from a quota reserved for them. In big cities, you have a specific counter or even a special office for them. If you plan to travel in 1st Class A/C (see below) tickets should be easier to get - they are in less demand.
In New Delhi, you can pay your tickets in US dollars. In this case, you will pay a higher rate. For air tickets, you have to pay the "foreigner" price.
Rail passes are also available, and are called Indrail passes. There is more information at http://www.indianrail.gov.in
The tickets could be booked online at www.irctc.co.in