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]
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.