Thats because all the traps. turn outs etc have been recently laid to complete the double line between medchal and bolarum. There is even an alignment change at Gundla Pochampally and although MED to BMO is now fully double there is a TSR of 30KMPH at all the turn outs, it will eventually increase. For now though there are no more crossings between MED and BMO which is a good thing