Extract from IRFCA: "If a train makes good time on its journey and arrives early at a station, it will sometimes be detained at a point well outside the station limits until the platform / track section ahead is free for it. Sometimes this is even planned for in the schedule in the case of overnight trains that would otherwise arrive at the destination at an odd hour (e.g., the Bangalore Mail from Chennai in the early 1990's was often detained at the outskirts of Bangalore for an hour or more before arriving at the Bangalore City station at its scheduled time a little before 6am; leaving later from Chennai or arriving earlier at Bangalore was not convenient for the passengers)."