It is a SF train between Kacheguda and Benguluru as it still maintains 55kmph, but non SF only in Benguluru Mysuru section for local passengers. As it's extended and timings to Mys are relaxed for all trains to free PFs and Stabling lines in SBC they will collect SF surcharge as 85% get down at Benguluru and they don't want to lose that revenue. Ideally speaking the stations in extended portion should not be collected SF surcharge from Kacheguda too as avg speed is less then 55kmph.
Regarding your last...
more... sentence it's the most prefered and only train with convenient overnight timings between Hyderabad and Benguluru and LHB is long pending. They are many long distance trains running with LHB with avg less then 50kmph and stoppages @20-30kmph.
please wait...Translate to EnglishThere's this fast train runnin' between Kacheguda and Bengaluru, keepin' it at a steady 55kmph. But once it enters Bengaluru Mysuru section, it slows down for the local passengers. Since they've extended the route and relaxed the timings to Mysuru to free up platforms and lines at Bengaluru City Junction, they gonna charge ya a surcharge 'cause most passengers get off at Bengaluru and they wanna keep that cash flow intact. Technically, they shouldn't be chargin' that surcharge from Kacheguda 'cause the speed is less than 55kmph in the extended route.
Now, about what you said earlier, this train is the most popular and only option with good overnight timings between Hyderabad and Bengaluru. Upgradin' to LHB coaches has been overdue. There are plenty of long-distance trains runnin' with LHB coaches, but their speeds are slower, with stops every 20-30kmph.
please wait...Translate to HindiYeh Kacheguda aur Bengaluru ke beech ka SF train hai jo abhi bhi 55kmph speed maintain karta hai, par non-SF hai sirf Bengaluru Mysuru section ke liye local passengers ke liye. Kyunki yeh extended kiya gaya hai aur Mys ke liye timings relaxation di gayi hai taki Sabhi trains ke liye Free PFs aur Stabling lines in SBC ho sake, woh SF surcharge collect karenge kyunki 85% log Bengaluru mein hi utarte hain aur unhe woh revenue nahi khona chahte. Ideally baat karein toh extended portion mein jo stations hain unse Kacheguda se bhi SF surcharge collect nahi karna chahiye kyunki average speed 55kmph se kam hai. Tere last sentence ke baare mein toh yeh sabse pasandida aur ek hi train hai convenient overnight timings ke saath Hyderabad aur Bengaluru ke beech mein, aur LHB bahut time se pending hai. Bohot saari long distance trains chal rahi hain LHB ke saath jinki average speed 50kmph se kam hai aur stoppages 20-30kmph par hain.