NZB-KRMR line yet to get clearence to have a proper SF to run ...even though it was CRS cleared ...its just for the sake but the line is not yet fit to run a train with good speed...
and more over first step towards that has been already laid by extending the current Rayalseema to NZB ...and you can expect the KRMR-TPTY also to be following the same patch abd placing a RSA b/w both SF trains ..will see what are the things in place for the next coming months..