Can we specifically book lower berth quota ticket online on Indian Railways? My parents will be travelling alone and both of them are quite aged (70+) now. Climbing up to the middle or upper berth may be a problem for them, so I need to find a way to book only the lower berth train tickets. Does Indian Railways offer any such privileges to the senior citizens? I will be extremely grateful if someone can guide me on how to book lower berth quota ticket online.