Railways monitor the availability of reservation on day to day basis. Based on waiting list, additional coaches are attached to clear the rush wherever feasible. Augmentation of trains is an ongoing process subject to traffic pattern, operation feasibility and availability of resources. In addition to this Railways also introduce new trains, increase the frequency of trains, extend the run of trains to take care of the growing demand. Railways also run special trains to clear the seasonal rush of traffic.
Different category of coaches are provided in the composition of a train keeping in view the traffic demand in the sector and patronisation of particular type of coaches.
Popular trains are augmented to 24 coach length and it is an ongoing process. At present 56 pair of trains are running with 24 coaches.
This information was given by the Minister of State for Railways Shri R.Velu in written reply to a question in the Lok Sabha today.