R se durg 4 lines de toh sahi rahega, 2 freight aur 2 mail express/memu ke fir you can think of 160 and high avg speed.
Of course tracks are fit for 25T axle load, for freight, automatically that would help running high speed passenger operations up to 160km/h
Ek baar saare LCs change ho jaye to overbridge and under bridge toh fencing possible h