Tracks enter Raichur from the Wadi end and Gadwal from the kurnool End..So if a train is moving from Raichur to SC it does not need to reverse at Gadwal, but needs to reverse if it is going to kurnool via Gadwal..Incidentally YPR-KCG will be an ideal train to run via this route instead of Dhone, no need of reversal at GTL also..