Section 50 in The Delhi Metro Railway General Rules, 2002
50. Continuous Automatic Train Control System.
(1)The Continuous Automatic Train Control System of working shall be adopted on Delhi metro rail 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 signalling by means of continuous transmission from track to train through track circuits ensuring safe movement of all trains under all operating conditions by continuously generating a safe operating envelope defined by 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 breaking distances and equipment reaction times.(4)The Maximum Safe Speed shall be the maximum speed at which the train is permitted to travel without intervention by the Train Control and Signalling 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 Tram Operation Mode ;(b)Manual Cab Signal Mode or Automatic Train Protection Mode ;(c)Run On Sight Mode ;(d)Restricted Manual Mode ; and(e)Cut-Out Mode.
