Section 20 in The Delhi Metro Airport Express Line, General Rules, 2010
20. Train detained on Line.
(1)If a train operating under Automatic Train Operation or cab signals comes to a stop on a running line and does not receive a proceed code within sixty seconds, the train operator shall inform to the traffic controller by the radio and ask for instructions.(2)The Traffic Controller shall check his indications and if he is satisfied that there is no train ahead, he may instruct the train operator to proceed in Restricted Manual Mode exercising utmost vigilance so, that he may stop short of any obstruction.(3)If, after traveling some distance, a proceed indication is received by the train, the train shall automatically upgrade to the Coded Manual mode of control and the train operator shall again inform the Traffic Controller and if the train is fitted with Automatic Train Operation, Automatic Mode of the control may be selected.(4)If the cause of the problem is confirmed as a track side equipment malfunction, the Traffic Controller may instruct subsequent trains without waiting for the train operator to seek instructions provided the preceding train has passed through the affected section and reported resumption of Coded Manual mode.(5)A train operating without receipt of proceed code shall stop at fixed signals irrespective of their aspect, and the train operator shall contact the Traffic Controller by the radio and ask for instructions.(6)The traffic controller shall consult the concerned station controller in control of the signaling and decide whether or not the train may proceed.(7)If there are no points in the route ahead, the Traffic Controller may instruct the train operator to proceed as far as the next fixed signal at a reduced speed (in any case not more than twenty five kilometers per hour speed) such that he can stop short of any obstructions and if after traveling some distance, a proceed indication is received by the train running on Restricted Manual mode, the train shall automatically upgrade to the Coded manual mode of control and the train operator shall again inform the Traffic Controller and if the train is fitted with Automated Train Operation, this mode of the control may be selected.(8)If there are points in the route, the traffic controller and the station controller shall examine the indication of the points and if indications at the station and the Operations Control Centre agree that all points are set correctly and locked, the traffic controller may instruct the train operator to proceed as far as the next fixed signal at a reduced speed such that he can stop short of any obstruction and if after traveling some distance, a proceed indication is received by the train running on Restricted Manual mode, the train shall automatically upgrade to the Coded manual mode of control and the train operator shall again inform the Traffic Controller and if the train is fitted with Automated Train Operation, this mode of the control may be selected.(9)If points are not indicated as set and locked, the traffic controller shall instruct the station controller to examine the concerned points, if they are lying in the incorrect position, he shall manually set the points with the crank handle from the station control room and the crank handle is interlocked through a key which, when released, will inhibit setting of routes over the points concerned and the points shall be secured with a clamp and padlocked and the train instructed by hand signal to proceed.
