Bhai partial doubling hampers a lot and it cripple's the exiting part left with single line. Jo timing set hai woh tha jab itna traffic nahi tha in KTE - SGRL, in 5- 6 years it has gone from 70% track utilization to 120% .
Yar simple sa baat hai 47 kmph maintain karna is not a big deal in 110+ section end to end via KTE- PCOI-DDU-GAYA and with DFC . Agar train 4/5 hr ruki bhi rahi due to freights toh 110 par aaram se cover ho jayega....
more... And kitini safai se reversal wala part you ignored .
Ab 65 mps and 90 mps wale track ka 130 mps wale section se comparison kar ke logic nikalna hai bhai toh fir aapka justification sahi hai upar ka.