According to a circular issued by the railway board, the passengers in the reserved coaches can only sleep between 10 pm and 6 am to allow others to sit in the seats for the rest of the time. Until the circular was issued, the existing permissible time for sleeping was between 9 pm and 6 am. The new provision replaces paragraph 652 in the Indian Railways Commercial Manual, Volume I. This provision is applicable to all reserved coaches with sleeping accommodation.