Metro rail services are likely to be allowed in the fourth phase of unlocking the country from the coronavirus-linked restrictions that is expected to be rolled out by next month, government sources said. But schools and colleges will still remain shut and restrictions will remain on crowded places like cinema halls, the sources added. The final call to resume metro services will, however, depend on the state governments. Delhi Metro is likely to start services from September 1, but with extensive restrictions, sources said.