It also means that the booming commuter population in the capital has yet another alternative to cars, buses and TSRs. Delhi's population is expected to touch 1.43 crore by 2001, 1.71 crore by 2006, 1.95 crore by 2011 and 2.1 crore by 2016. And, even by 2001, as estimates of the National Capital Region (NCR) Planning Board suggest, in the absence of a mass rapid transport system, the growing number of commuters will need at least 10,000 buses. "The ultimate aim is to integrate the metro service with the rail network of the region," says an official in the urban affairs ministry. That will also mean that the ring rail network in Delhi, which runs only 11 trains through the day, will be utilised to the optimum. When that happens, the DMRC will take care of commuters travelling within Delhi and the Indian Railways will ferry passengers to and from Delhi on its 180 trains that touch Delhi round the clock.