Any trn wid less than 30 hrs TT as of 12905/06 in HWH-ADI section is next to impossible. If a non-stop trn is introduced (which has chances in negative zone), it wud not be a profitable venture for pax as well as IR. Plus, it should be noted dat HWH-CSMT line depends heavily on KGP, TATA, ROU, R, DURG, NGP n BD for fetching passengers apart frm HWH. N all trns (even 12261/62, 12859/60, 12129/30, 12905/06, 12101/02) hv good amount of slack also at some point or other which u can't neglect as it is d USP of this line dat even after s9 much slack, the avg of the trns are above 60 kmph. Also, every new trn introduced, be it 22893/94, 12869/70, 12767/68, 22511/12 are all slower dan the bosses of their respective routes lyk 12859/60, 12129/30, 12261/62, 12905/06. N also one spl was run btn SRC-ADI, dat was...
more... flop n also it had a running tym greater than dat of 12905/06. U can get a trn faster than 12833/34 bt not faster than 12905/06. Its impractical at this moment.