Jat groups have threatened to intensify their agitation demanding reservation in government jobs and colleges at Delhi's Jantar Mantar from tomorrow, prompting the police to enforce traffic restrictions from tonight. Metro trains will not travel beyond the city's borders from 11.30 pm today, while 12 stations in Central Delhi will be shut from 8 pm till further orders. The Delhi Police has also issued an advisory for commuters and ordered the closure of several key routes from 8 pm onwards in the national capital.