If BG had been adopted for HST then, by 2050, the scenario of train operation in India could be:
** Almost all the freight trains (about 90%) are running on the Dedicated Freight Corridors at 100/120kmph, rest running on some stretches of conventional IR network at 90/100kmph.
** HS train sets running at 320+ kmph on dedicated HST routes
** HS trainsets running at...
more... 320+kmph on dedicated HST routes and 160/200 kmph on routes on conventional IR network upgraded to SHS standard
** SemiHS trainsets & Push-Pull Loco trains operating at 160/200kmph on conventional IR network upgraded to SHS standard and at 130+kmph on remaining conventional network.
** Conventional loco trains/ trainsets operating on conventional IR network at 130+kmph