TABLE 3-7 Change in Travel Time Variability Index and Actual Travel Time and Operated Flights: 1990-2002
Monday, September 10, 2012
TABLE 3-7 Change in Travel Time Variability Index and Actual Travel Time and Operated Flights: 1990-2002
Seasonally adjusted, yearly averages
Index: 1990 = 100.0
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| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Actual travel time | 100.0 | 98.8 | 98.2 | 98.5 | 98.4 | 99.4 | 101.3 | 100.3 | 101.3 | 102.3 | 105.0 | 101.8 | 99.4 |
| Operated flights | 100.0 | 84.6 | 86.6 | 89.0 | 90.3 | 94.6 | 95.5 | 100.3 | 99.2 | 99.3 | 101.1 | 96.7 | 88.0 |
| Travel Time Variability | 100.0 | 93.5 | 87.5 | 93.2 | 94.9 | 107.4 | 124.2 | 116.9 | 127.1 | 134.2 | 148.7 | 129.3 | 115.4 |
NOTE: The Travel Time Variability Index is based on the standard deviation of actual travel time.
SOURCES: Data for actual travel time-U.S. Department of Transportation (USDOT), Bureau of Transportation Statistics (BTS), calculations based on Airline Service Quality Performance data, March 2004. Operated flights-USDOT, BTS, Airline Market and Segment (T-100) data, March 2004.