Only track upgradation and replacing SL Coaches with AC coaches will not work in a hugely populated country like India, specially in tracks passing through some densely populated states like Bihar, UP, WB, etc. Either Entire track fencing required or/and modern technology is required to be fitted in Locos and Tracks to detect any flaws or detect any unwanted things on tracks and warn loco pilots and also stop trains accordingly automatically if needed. This kind of works needed all over IR where RB wants to run trains at 160 kmph. Otherwise, there is danger. OR it will remain as another way of making public fool like RB is doing now in the name of Mission Raftar. End-to-end travel time is remaining same , only 10 minutes increase in one year Timetable and 5 mins decrease in next year timetable in the name of speedup from 110 kmph to 130 kmph....
more... Nothing visible on ground.