Seat Map or Coach Layout of Class AC 2 Tier in Indian Railways by etrain.info Second Class AC ( 2A ) combines comfort with affordability, providing air-conditioned berths for a more relaxed journey. Third Class AC ( 3A ) strikes a balance between comfort and economy, featuring air-conditioned sleeping berths. But on the other hand, when you go online to book or reserve train tickets then you see all sorts of options like SL, 1A, 2A , 3A, 2S, CC, and EC. If you don’t know what these abbreviations mean, then you’re at the right place because we’ll be taking a look at what each of them means and why you’re charged differently for each section.
