u/Bulky_Bit1260

I am quite regular traveller on this line as I have my university in bhubaneswar and home in wb so the things I noticed is for few years I have really missed the khatak khatak sound of the trains and the trains have increased speed significantly like they frequently tough and cover major part of the journey in 120-130 kmph and also in these years I have seen in the railways the joints that were previous ly done with bolta leaving a gap in between have now been removed with thermite weldings and many such things have been done, but I am wondering which other parts of the rails ways have such changes of ling continuous welded rails and higher speed capacities??