NEW DELHI: Metro trains will not travel beyond the city's borders from 11.30 PM on Sunday, while 12 stations in Central Delhi will be shut from 8 PM till further orders.The extraordinary measures, that are likely to throw life out of gear in the national capital, will be enforced in view of Jat groups threatening to intensify their agitation from Monday demanding quota in education and employment.The affected stations will be Rajiv Chowk Patel Chowk , Central Secretariat, Udyog Bhawan, Lok Kalyan Marg, Janpath, Mandi House, Barakhamba Road, R K Ashram Marg, Pragati Maidan, Khan Market and Shivaji stadium.However, interchange facility will be available at all the interchange stations.As directed by Delhi Police, services will not be available at Yellow line stations at Gurgaon, Blue Line stations at Noida and Violet Line stations at Faridabad."The services to all these stations will be resumed only after getting clearance from Delhi Police," a metro official said.All-India Jat Aarakshan Sangarsh Samiti (AIJASS), which is spearheading the Jat quota stir, had given a call for the march to Delhi on March 20 to besiege Parliament and to hold dharnas on the Delhi border, blocking all highways, to press for their demands for reservation.