Section 37 in The Delhi Metro Airport Express Line, General Rules, 2010
37. Indications.
(1)Door open indicator - (a) when platform screen door or platform edge door is under opening and closing process, the door opening indicator flashes and chime is activated;(b)when platform screen door or platform edge door is under fully opened position, the door opening indicator is illuminated and chime is deactivated;(c)when platform screen door or platform edge door is under closed and locked position, the door opening indicator is extinguished and chime is deactivated.(2)Indicators above manual secondary door or emergency escape door - One each light emitting diode indicator is provided above each manual secondary door or emergency escape door leaf to give closed and locked indications, respectively.(3)Obstruction detection - (a) Sensors are provided to detect any person trapped between train door and Platform Screen door at station with curved platform, when all platform screen doors and platform edge doors are closed by the train operator, the sensors shall check and give following indications on Platform Screen door local panel at both headwall and tailwall:(i)nobody trapped - Green; and(ii)somebody trapped - Red flashing, unless sensors detect all doors clear, Platform Screen door system will not give clearance for train departure;(b)in case of detection of an obstruction in between two Platform Screen door leaves of a Platform Screen door resulting in non closure of such door, the door makes three attempts to close automatically, if the obstacle is removed in these attempts Platform Screen door closes again, if obstacle is still present, then the Platform Screen door stops in unlocked position and is free to be pushed back by hand and once the obstruction disappears, train driver can open and close the doors again and if the problem persists, then, station staff shall attend the affected door.
