How I perform Salat during traveling through bus, train or aeroplane from one city to another city at a distance more than 100 km. How I perform Salat during traveling through train or aeroplane as there is difficult to find out proper direction of Qiblah. Also, it is difficult for one to stand for Salat and manage his balance due to continuous to and fro movement one feels in the train and some times in the aeroplanes. Does one delayed his Salat during traveling in train/aeroplane and wait for nearby station/airport. Is there any rule that one will return his Salat which he prayed in the train/aeroplane whenever he reaches his destination? If yes, then how he will offer that Salat again? Should he re-offer his already offered Salat in train/aeroplane in normal way or as Qaza Salat?