First remove loop track near PF No.1 (At that period trains which have stop in kpy towards ernakulam side can halt pf no.2 or 3. Other trains have no hindrance).After that widen PF No.1 to main track (ie, track towards kyj side).In this way we can avoid loop track of PF No.1. After this modification, in station control board very small change is needed.So cost required is less.