Table 1c. Export Shipment Characteristics by Export Mode of Transportation: Percent of Total for 2002 and 1997

Table 1c. Export Shipment Characteristics by Export Mode of Transportation: Percent of Total for 2002 and 1997

[Estimates are based on data from the 2002 and 1997 Commodity Flow Surveys. Because of rounding, estimates may not be additive]

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Export mode of transportation Value (percent) Tons (percent)
2002 1997 2002 1997
All modes 100.0 100.0 100.0 100.0
Single modes 85.4 87.8 92.9 92.2
Truck1 24.9 19.5 11.3 10.8
Rail 2.9 4.1 10.2 8.2
Water 27.2 29.1 70.7 72.2
Air (including truck and air) 30.3 35.1 0.7 0.9
Pipeline2 S S
Multiple modes 12.0 2.8 5.0 0.2
Parcel, U.S.P.S. or courier 4.1 2.8 0.1 0.2
Truck and rail
All other multiple modes 7.9 4.9
Other and unknown modes 2.6 9.4 2.1 7.6

KEY:
– Represents an estimate equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of high sampling variability or poor response quality.

1 "Truck" as a single mode includes shipment that were made by only private truck only for-hire truck, or a combination of private and for-hire truck.
2 Estimates for pipeline exclude shipments of crude petroleum.

NOTES: Value-of-shipment estimates have not been adjusted for price changes. Appendix B tables provide estimated measures of sampling variability. The Introduction and appendixes give information on confidentially protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at www.census.gov/cfs.
Coverage for the 2002 Commodity Flow Survey (CFS) differs from the previous surveys due to a change from the 1987 Standard Industrial Classification System to the 1997 North American Industry Classification System and other survey improvements. Therefore, data users are urged to use caution when comparing 2002 CFS estimates with estimates from prior years.

SOURCE: Research and Innovative Technologies Administration, Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Export Data, March 2005.