Plastic will be generated even in smaller size plastic bottles. So a single bigger size bottle might be a better idea than 2 or 3 smaller size ones. In any case plastic bottles should be banned altogether, if it is a matter of environment. As regards wastage of water, railways should offer an additional 500ml of water bottle within the same cost, once the passenger finishes the first one OR after a definite number of stations. So passengers alighting in between might not need the additional bottle and the second bottle would be only for those who will be travelling till the destination. Also the second bottle can be given at the time of dinner being served as those passengers are likely to complete the journey at the destination.
Railways is certainly the cheapest mode of transportation but only in non-premium trains. In premium trains like Rajdhani and Shatabdi, it is no longer the case. Rajdhani has stopped offering soups before dinner and they have also done away with the option of continental food which used to be the case a few years ago. The menu is still the same for lunch, dinner and breakfast after so many decades. All this at a time when dynamic pricing has been introduced in booking of Rajdhani tickets and people end up spending huge amounts especially ahead of festivals / special occasions. more