At present SC Vijaywada is fit for 130kmph and certified by ScR for operating trains through notification in Oct 2022. Vijayawada Duvvada of Vskp section trails are conducted last week.
160kmph no where in India except Tuglakhabad to Agra outer for about 180km route length. NDLS HWH and Mumbai are only approved by IR for 160kmph implementation in 2017-18 and expected in 2023-24 and again target date is not fixed. In another news in the same month in Nov 2021 the project cost for upgradation of power systems OHE systems and...
more... other electrical related equipments for both lines is Rs 5500crores, fencing the line on both sides by wall or other means, changing of rails with high density and heavy guage to support high speed and the total project cost is Rs 15000 crs. I don't have the related url link.