Table 2b. Hazardous Material Shipment Characteristics by Hazard Class: 2002 and 1997

Table 2b. Hazardous Material Shipment Characteristics by Hazard Class: 2002 and 1997

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

Excel | CSV

Hazard class and description Value Tons Ton-miles Average miles per shipment
2002
(million $)
1997
(million $)
Percent
change
2002
(thousands)
1997
(thousands)
Percent
change
2002
(millions)
1997
(millions)
Percent
change
2002 1997 Percent
change
Total 660,181 526,679 25.3 2,191,519 1,783,620 22.9 326,727 294,823 10.8 136 110 23.7
Class 1, Explosives 7,901 5,584 41.5 5,000 1,718 191.0 1,568 S S 651 771 -15.6
Class 2, Gases 73,932 47,288 56.3 213,358 137,138 55.6 37,262 26,002 43.3 95 60 58.7
Class 3, Flammable liquids 490,238 386,994 26.7 1,788,986 1,450,591 23.3 218,574 184,824 18.3 106 69 54.3
Class 4, Flammable solids 6,566 4,238 54.9 11,300 14,832 -23.8 4,391 9,735 -54.9 158 660 -76.0
Class 5, Oxidizers and organic peroxides 5,471 4,485 22.0 12,670 9,239 37.1 4,221 4,471 -5.6 407 193 111.2
Class 6, Toxic (poison) 8,275 10,085 -18.0 8,459 6,366 32.9 4,254 2,824 50.6 626 403 55.2
Class 7, Radioactive materials 5,850 2,722 114.9 57 87 -35.1 44 48 -8.8 S 445 S
Class 8, Corrosive materials 38,324 41,336 -7.3 90,671 98,331 -7.8 36,260 42,918 -15.5 301 205 46.7
Class 9, Miscellaneous dangerous goods 23,625 23,946 -1.3 61,018 65,317 -6.6 20,153 22,727 -11.3 368 323 13.9

KEY:
– 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.

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