For those of you flying between destinations in India, please remember that most domestic airlines only allow for one checked bag at 45 pounds (20 kg) and one carry-on bag at 22 pounds (10 kg). Fees may apply for additional and/overweight luggage, so please pack accordingly - especially since most international carriers allow two bags per passenger.
For travel by land (trains, buses, etc) there is no weight limit. However, there are no trolleys at the train and bus stations, so luggage must be carried by yourself or a porter. If you are traveling as a group tour, the baggage allowance will be stated in your itinerary.