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

Table 1c. Hazardous Material Shipment Characteristics by 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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Mode of transportation Value (percent) Tons (percent) Ton-miles (percent)
2002 1997 2002 1997 2002 1997
All modes 100.0 100.0 100.0 100.0 100.0 100.0
Single modes 97.6 96.9 98.5 98.2 95.5 92.9
Truck 1 63.6 61.7 52.9 53.8 33.7 27.9
For-hire truck 28.8 27.4 20.5 20.7 19.9 16.7
Private truck 34.3 33.6 32.0 32.4 13.5 10.8
Rail 4.7 6.6 5.0 5.7 22.1 26.7
Water 7.1 6.3 10.4 9.4 21.6 21.4
Air (includes truck and air) 0.2 1.6
Pipeline 2 22.0 20.6 30.2 29.3 S S
Multiple modes 1.5 1.4 0.9 0.7 3.8 S
Parcel, U.S.P.S. or courier 0.6 0.6
Other multiple modes 0.8 0.8 0.8 0.7 3.8 S
Other and unknown modes 0.9 1.7 0.6 1.1 0.7 0.6

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

1 "Truck" as a single mode includes shipments 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.

SOURCE:
Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.