Trains are the True Systems to move big cities and help countries in progress.
Following uncle sams foot step many country developed road network why keeping Rails on the sword.
With Bigger cities Metro Can move much more number of people quickly, cheaply than any other systems which are the need for working class.
Connecting your cities through with Rapid , Cheaper and Decent train system help in progress and development of cities as people can get to work which is not possible or affordable with bus or planes.
Carrier Trains can be powered by renewable energy, that can lower your petrol chemical import.
Help in lower traffic , lower pollution & save money.
Biggest issue with Pakistan is majority of its population is too dependent on few major cities which is causing alot of problem with that people can commute to bigger or smaller cities daily for work by this.