Section 56 in The Delhi Metro Airport Express Line, General Rules, 2010
56. Continuous Automatic Train Control System.
(1)The Continuous Automatic Train Control system of working shall be adopted on the Delhi Metro Airport Express Line for movement of trains between stations and between depot and the main line.(2)The Continuous Automatic Train Control system works on the principle of target speed and target distance with cab signaling by means of continuous transmission from track to train through track circuits, ensuring safe movement or all trains under all operating conditions by continuously generating a safe operating envelope according to the limit of movement authority and the maximum safe speed.(3)The limit of movement authority shall be the farthest point to which the train may safely proceed taking into account margins for error in speed and distance measurement, calculating braking distances and the equipment reaction times.(4)The maximum safe speed shall be maximum speed at which the train is permitted to travel without intervention by the train control and signaling system and it shall be continuously calculated in such a manner that permanent speed restrictions, the speed limits for the type of train and temporary speed restrictions shall not be exceeded and the train shall always stop without passing the limit of movement authority.(5)The Continuous Automatic Train Control system shall provide the following modes of train operation, namely:-(a)Automatic mode;(b)Automatic Reversal mode;(c)Coded Manual mode;(d)Restricted Manual mode; and(e)Cut out mode.
