In Sleeper Class No out sider should allowed; even if no waiting list passengers are allowed, our railway should should stop booking of Wait Listed passengers. The waiting list facility should be allowed to IRCTC eticket booking holders so that after preparation of chart money can be refunded to rest waitlisted passengers and rest will allow to go the actual berth allotted persons. This thing will come automatically, and RAC facility should be given only to PRS ticket holders. This suggestion will give facility to travel only allotted passengers he may be RAC or Confirmed. So that one reserved ticket holder will travel safely to prevent unauthorised entrants or Waitlisted passengers (those are going in sleeper by distrubing confirmed ticket holder's seat) hope Indian railway will do this.