what is 2s in train booking

2S in train booking refers to the second seating class in Indian Railways. It is the lowest reserved class in Indian trains and is also known as the second sitting class. In this class, the seats are in the form of benches, which can be joined or may have a little distance between them. The seats of the 2S class may or may not possess a cushion. Usually, 2S coaches have seats in a 33 layout, and some 2S coaches can also have a seating arrangement of 32. 2S seats are usually benches and can be booked online. A 2S seat in a train will not offer sleeping facilities as it is only for seating, and it is a good option for a short (4-5 hours) journey.