Section 50(6)(d) in The Delhi Metro Airport Express Line, General Rules, 2010
(d)The Traffic Controller shall instruct the train operator of the assisting train to select Coded Manual mode and proceed toward the direction of stalled train as near as permissible to an appropriate cross passage as advised by traffic controller and then change to Restricted manual mode in consultation with Traffic Controller to drive his train to a point, near a cross passage as advised by the Traffic Controller;