Section 61(1) in The Delhi Metro Airport Express Line, General Rules, 2010
(1)The "Cut out" mode, is intended for use in case of complete train borne train control and signaling system failure and in such mode the train speed shall be restricted as under-(i)Low Speed Cut out Mode - this is the default mode of operation in Automatic Train Control Cut-out condition, in which the propulsion system would cut out traction of the train above twenty five kilometer per hour speed and the train operator shall manually drive the train in accordance with the line-side signals and shall monitor and limit the speed of the train if it exceeds twenty five kilometer per hour speed, by service brake application.(ii)High Speed Cut out Mode - this mode shall be employed only under specific instructions from the Operations Control Centre, in which the operation in Automatic Train Control Cut-out condition the propulsion system would cut out traction of the train above forty kilometer per hour and the train operator shall manually drive the train in accordance with the line-side signals and shall monitor and limit the speed of the train if it exceeds forty kilometer per hour, by service brake application.
