(Number of city-pairs)
|Increased schedule time||Decreased or unchanged schedule time|
NOTE: Air data cover non-stop service only. Bus and rail data include direct and connecting service
SOURCES: National Passenger Railroad Corp. (Amtrak), National, Northeast and Schedule Change Timetables (Washington, DC: 1994/1995 and 2001/2002 issues); Russell's Guides, Official National Motor Coach Guides (Cedar Rapids, IA: January 1995 and February 2002 editions); Greyhound Lines, System Timetable (Dallas, TX: January 1995).