The train must be halted @ this place!!
From or towards Dilkusha Signal (which starts as outer for Lucknow Station, with no UP & DN Line rule & multiple signals for Level Crossing) the sight of train been standing just before crossing is quite normal!!
Both the bikers arnt watching Loco but towards signal, if its getting green or not!!
It just should have...
more... waited for any train coming from SLN/RBL/FD side (to get track cleared for its movement towards SLN Side, for which it has to cross the UP Track). The crowd jumbling & crossing track just before this level crossing suggests some train have passed & thats why the bikers are watching the signal, if getting cleared, even when passing front of LOCO!)
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PS: The Rajdhani seems to be shorter (which its not) & there isnt any turn, which would have made the train look smaller!!