Table 1a. Hazardous Material Shipment Characteristics by Mode of Transportation: 2002
[Estimates are based on data from the 2002 Commodity Flow Survey. Because of rounding, estimates may not be additive]
|Mode of transportation||Value||Tons||Ton-miles||Average miles
|Air (includes truck and air)||1,643||0.2||64||–||85||–||2,080|
|Parcel, U.S.P.S. or courier||4,268||0.6||245||–||119||–||837|
|Other multiple modes||5,363||0.8||18,500||0.8||12,369||3.8||1,371|
|Other and unknown modes||6,061||0.9||14,241||0.6||2,342||0.7||57|
– Represents and estimate equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards b ecause 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.