Table 15b. Hazardous Material Shipment Characteristics for Packing Group I: Percent of Total for 2002 and 1997

Table 15b. Hazardous Material Shipment Characteristics for Packing Group I: 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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Description Value (percent) Tons (percent) Ton– miles (percent)
2002 1997 2002 1997 2002 1997
Total 100.0 100.0 100.0 100.0 100.0 100.0
Packing Group I 26.9 28.9 26.3 28.0 24.5 24.8

KEY:
– Represents an 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.

NOTE:
Note: Packing Groups I, II, and III reflect the level of hazard associated with the material being shipped. Packing Group I is the most rigorous.

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