21.  While a sophisticated computer helps her keep track of trains, she failed to tell the machine that a southbound train was in the area.

22.  Passengers on the southbound Acela train en route to Washington, D.C., remained on the scene hours after the accident waiting for another train to pick them up.

23.  A conductor and an engineer on the southbound train were critically injured.

24.  Four other trains had passed over the area just before the wreck, including a southbound train carrying coal.

25.  His train plowed into the rear of another southbound train, a passenger express that had slowed because thick morning fog blanketed the rail line along the Nile River.

26.  On the southbound train, engineer Allen Yash and conductor Jesse Enriquez were injured, Burke said.

27.  Several southbound trains were stuck on the line, he said.

28.  Some southbound trains were ending their runs in New Haven.

29.  The conductor of a loaded coal train was killed Monday when the southbound train ran into another in southwestern Arkansas, causing a derailment.

30.  The explosion occurred on a southbound train approaching the station in south-central Moscow.