Table 7c. Hazardous Material Shipment Characteristics by Hazard Class Division and 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]
Division 1.1, Explosives with a mass explosion hazard
| Hazard Class Division and Mode of Transportation | Value (percent) | Tons (percent) | Ton-miles (percent) | |||
|---|---|---|---|---|---|---|
| 2002 | 1997 | 2002 | 1997 | 2002 | 1997 | |
| All modes | 100.0 | 100.0 | S | S | S | S |
| Single modes | 97.5 | 99.6 | S | S | S | S |
| Truck 1 | 97.5 | 69.9 | S | 45.6 | S | S |
| For-hire truck | 71.7 | 46.4 | S | 15.0 | S | 7.2 |
| Private truck | S | 23.5 | S | S | S | S |
| Rail | – | S | – | S | – | S |
| Water | – | – | – | – | – | – |
| Air (includes truck and air) | – | S | – | S | – | S |
| Pipeline 2 | – | – | – | – | S | S |
| Multiple modes | S | S | S | S | S | S |
| Parcel, U.S.P.S. or courier | S | S | S | S | S | S |
| Other multiple modes | – | – | – | – | – | – |
| Other and unknown modes | S | S | S | S | S | S |
Division 1.2, Explosives with a projection hazard
| Hazard Class Division and Mode of Transportation | Value (percent) | Tons (percent) | Ton-miles (percent) | |||
|---|---|---|---|---|---|---|
| 2002 | 1997 | 2002 | 1997 | 2002 | 1997 | |
| All modes | S | S | S | 100.0 | S | 100.0 |
| Single modes | S | S | S | 99.9 | S | 99.8 |
| Truck 1 | S | S | S | 99.5 | S | 99.4 |
| For-hire truck | S | S | S | 98.1 | S | 99.4 |
| Private truck | – | S | – | S | – | S |
| Rail | – | – | – | – | – | – |
| Water | – | – | – | – | – | – |
| Air (includes truck and air) | – | S | – | S | – | S |
| Pipeline 2 | – | – | – | – | S | S |
| Multiple modes | – | – | – | – | – | – |
| Parcel, U.S.P.S. or courier | – | – | – | – | – | – |
| Other multiple modes | – | – | – | – | – | – |
| Other and unknown modes | – | S | – | S | – | S |
Division 1.3, Explosives with predominantly a fire hazard
| Hazard Class Division and Mode of Transportation | Value (percent) | Tons (percent) | Ton-miles (percent) | |||
|---|---|---|---|---|---|---|
| 2002 | 1997 | 2002 | 1997 | 2002 | 1997 | |
| All modes | S | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Single modes | S | 91.5 | 100.0 | 76.1 | 100.0 | 83.0 |
| Truck 1 | S | 91.1 | S | 76.1 | 89.5 | 82.9 |
| For-hire truck | S | 87.4 | S | 66.7 | S | 81.0 |
| Private truck | S | 3.7 | S | S | S | S |
| Rail | S | – | S | – | S | – |
| Water | – | – | – | – | – | – |
| Air (includes truck and air) | S | S | S | S | S | S |
| Pipeline 2 | – | – | – | – | S | S |
| Multiple modes | – | S | – | S | – | S |
| Parcel, U.S.P.S. or courier | – | S | – | S | – | S |
| Other multiple modes | – | – | – | – | – | – |
| Other and unknown modes | – | S | – | S | – | S |
Division 1.4, Explosives with no significant blast hazard
| Hazard Class Division and 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 | 97.4 | 81.7 | 98.4 | 93.4 | 97.5 | 92.3 |
| Truck 1 | 96.0 | 65.4 | 98.3 | 84.8 | 97.1 | 76.7 |
| For-hire truck | 87.6 | 49.7 | 94.6 | 62.3 | 95.4 | 67.0 |
| Private truck | S | 15.5 | 3.7 | 22.5 | S | 9.6 |
| Rail | S | S | S | S | S | S |
| Water | – | – | – | – | – | – |
| Air (includes truck and air) | S | 6.9 | – | 0.3 | S | 0.4 |
| Pipeline 2 | – | – | – | – | S | S |
| Multiple modes | 2.6 | 16.3 | S | 5.3 | S | 6.7 |
| Parcel, U.S.P.S. or courier | 2.6 | 16.2 | S | 5.2 | S | 6.4 |
| Other multiple modes | – | S | – | S | – | S |
| Other and unknown modes | S | 2.0 | S | 1.3 | S | S |
Division 1.5, Very insensitive explosives, blasting agent
| Hazard Class Division and 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 | 99.6 | 99.7 | 99.9 | 99.4 | 100.0 | 99.4 |
| Truck 1 | 94.1 | 99.7 | 91.8 | 99.4 | 69.0 | 99.4 |
| For-hire truck | 15.2 | 7.7 | 22.2 | 9.3 | 36.8 | 20.1 |
| Private truck | 78.6 | 92.0 | S | 90.1 | 32.1 | S |
| Rail | 5.1 | – | 8.1 | – | 31.0 | – |
| Water | – | – | – | – | – | – |
| Air (includes truck and air) | S | – | S | – | S | – |
| Pipeline 2 | – | – | – | – | S | S |
| Multiple modes | S | S | S | S | S | S |
| Parcel, U.S.P.S. or courier | S | – | S | – | S | – |
| Other multiple modes | – | S | – | S | – | S |
| Other and unknown modes | S | S | S | S | S | S |
Division 2.1, Flammable gases
| Hazard Class Division and 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 | 99.2 | 95.6 | 99.4 | 97.9 | 98.8 | 98.1 |
| Truck 1 | 42.5 | 40.3 | 36.0 | 33.2 | 24.0 | 23.5 |
| For-hire truck | 15.6 | 13.7 | 15.2 | 16.1 | 16.5 | 15.7 |
| Private truck | 26.9 | 26.2 | 20.8 | 16.7 | 7.4 | 7.7 |
| Rail | 19.0 | 10.3 | 18.6 | 10.6 | 59.2 | 48.6 |
| Water | 3.8 | 3.8 | 5.1 | 5.2 | 5.7 | 9.8 |
| Air (includes truck and air) | S | S | S | S | S | S |
| Pipeline 2 | 33.7 | 41.2 | 39.8 | 48.9 | S | S |
| Multiple modes | 0.3 | 0.8 | 0.4 | 0.6 | 1.2 | 0.9 |
| Parcel, U.S.P.S. or courier | S | – | S | – | S | – |
| Other multiple modes | 0.2 | 0.7 | 0.4 | 0.6 | 1.2 | 0.9 |
| Other and unknown modes | S | 3.7 | 0.2 | 1.5 | – | S |
Division 2.2, Nonflammable, nontoxic compressed gases
| Hazard Class Division and 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 | 97.2 | 94.9 | 99.7 | 96.3 | 99.0 | 97.3 |
| Truck 1 | 92.9 | 84.2 | 60.7 | 82.7 | 72.6 | 61.6 |
| For-hire truck | 49.0 | 35.5 | 6.9 | 8.6 | 23.7 | 15.6 |
| Private truck | 43.8 | 48.5 | 53.5 | 73.9 | 46.8 | 45.2 |
| Rail | 0.8 | 2.0 | 0.6 | 1.3 | S | 5.2 |
| Water | S | S | S | S | S | S |
| Air (includes truck and air) | 0.7 | 3.8 | S | – | S | – |
| Pipeline 2 | S | 3.5 | S | 11.9 | S | S |
| Multiple modes | 2.0 | 2.1 | 0.1 | S | S | 0.4 |
| Parcel, U.S.P.S. or courier | 1.7 | 2.0 | S | S | – | S |
| Other multiple modes | 0.3 | 0.2 | S | S | S | S |
| Other and unknown modes | 0.8 | 2.9 | 0.2 | S | S | S |
Division 2.3, Gases toxic by inhalation
| Hazard Class Division and 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 | 98.5 | 96.3 | 98.7 | 93.0 | 99.5 | 99.2 |
| Truck 1 | 70.6 | 40.3 | 51.2 | 33.7 | 27.5 | 14.1 |
| For-hire truck | 34.0 | 21.0 | 25.2 | 19.3 | 16.1 | S |
| Private truck | 36.6 | 19.0 | 25.9 | 14.0 | S | 2.9 |
| Rail | 16.8 | 46.7 | 24.8 | 40.0 | 52.2 | 71.5 |
| Water | S | 3.8 | S | 9.7 | S | 9.2 |
| Air (includes truck and air) | S | S | S | S | S | S |
| Pipeline 2 | 9.0 | 5.4 | 19.1 | 9.6 | S | S |
| Multiple modes | S | S | S | S | S | S |
| Parcel, U.S.P.S. or courier | S | S | S | – | – | S |
| Other multiple modes | S | S | S | S | S | S |
| Other and unknown modes | 1.2 | 3.6 | S | S | 0.5 | S |
Division 4.1, Flammable solids
| Hazard Class Division and 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 | 86.3 | 93.2 | 99.7 | 99.0 | 99.5 | 98.7 |
| Truck 1 | 73.4 | 78.7 | 54.8 | 36.7 | 16.4 | 5.8 |
| For-hire truck | 9.9 | 48.5 | 37.4 | 28.8 | 12.7 | 4.9 |
| Private truck | 63.4 | 29.7 | 17.5 | 5.9 | 3.7 | 0.8 |
| Rail | S | 11.6 | 30.3 | 58.2 | 67.8 | 92.5 |
| Water | 0.5 | S | 13.7 | S | S | S |
| Air (includes truck and air) | S | S | S | S | S | S |
| Pipeline 2 | S | S | S | 3.8 | S | S |
| Multiple modes | S | S | S | S | S | S |
| Parcel, U.S.P.S. or courier | 1.3 | S | – | – | – | – |
| Other multiple modes | S | S | S | S | S | S |
| Other and unknown modes | S | S | S | S | S | S |
Division 4.2, Spontaneously combustible materials
| Hazard Class Division and 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 | 94.7 | 98.9 | 98.9 | 99.3 | 97.3 | 99.4 |
| Truck 1 | 84.0 | 54.3 | 66.5 | 58.6 | S | 21.3 |
| For-hire truck | S | 36.5 | 59.4 | 40.3 | S | 16.9 |
| Private truck | 25.6 | 17.8 | 7.0 | 18.3 | S | 4.4 |
| Rail | 10.5 | 44.5 | S | 40.8 | 47.5 | 78.1 |
| Water | – | – | – | – | – | – |
| Air (includes truck and air) | S | S | S | – | S | – |
| Pipeline 2 | – | – | – | – | S | S |
| Multiple modes | 5.2 | S | 0.7 | S | S | S |
| Parcel, U.S.P.S. or courier | 5.2 | S | 0.6 | S | S | S |
| Other multiple modes | S | S | S | S | S | S |
| Other and unknown modes | S | S | S | S | S | S |
Division 4.3, Dangerous when wet materials
| Hazard Class Division and Mode of Transportation | Value (percent) | Tons (percent) | Ton-miles (percent) | |||
|---|---|---|---|---|---|---|
| 2002 | 1997 | 2002 | 1997 | 2002 | 1997 | |
| All modes | S | 100.0 | 100.0 | S | S | 100.0 |
| Single modes | S | 93.7 | 95.4 | S | S | 97.6 |
| Truck 1 | S | 81.6 | 90.0 | S | S | 55.8 |
| For-hire truck | S | 58.5 | S | 14.0 | S | 38.7 |
| Private truck | 11.3 | 22.9 | 35.3 | S | S | S |
| Rail | S | 11.8 | S | 4.9 | S | 41.8 |
| Water | – | S | – | S | – | S |
| Air (includes truck and air) | S | S | S | S | S | S |
| Pipeline 2 | – | – | – | – | S | S |
| Multiple modes | 3.8 | S | S | S | S | S |
| Parcel, U.S.P.S. or courier | S | S | S | S | S | S |
| Other multiple modes | S | S | S | S | S | S |
| Other and unknown modes | S | S | S | S | S | S |
Division 5.1, Oxidizers
| Hazard Class Division and 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 | 97.1 | 97.3 | 96.9 | 97.7 | 94.5 | 98.2 |
| Truck 1 | 81.1 | 70.4 | 76.2 | 62.9 | 60.5 | 34.3 |
| For-hire truck | 36.1 | 42.7 | 50.1 | 31.7 | S | 25.5 |
| Private truck | 44.8 | 27.4 | 25.7 | 31.1 | 7.3 | 8.7 |
| Rail | 16.0 | 26.9 | 20.6 | 34.8 | 34.0 | 63.9 |
| Water | – | S | – | S | – | S |
| Air (includes truck and air) | S | S | – | – | S | S |
| Pipeline 2 | – | – | – | – | S | S |
| Multiple modes | 1.8 | 0.8 | S | S | S | S |
| Parcel, U.S.P.S. or courier | S | S | S | S | S | – |
| Other multiple modes | 1.6 | S | S | S | S | S |
| Other and unknown modes | S | 1.9 | S | S | S | S |
Division 5.2, Organic peroxides
| Hazard Class Division and Mode of Transportation | Value (percent) | Tons (percent) | Ton-miles (percent) | |||
|---|---|---|---|---|---|---|
| 2002 | 1997 | 2002 | 1997 | 2002 | 1997 | |
| All modes | 100.0 | 100.0 | S | 100.0 | S | 100.0 |
| Single modes | 99.5 | 97.5 | S | 97.3 | S | 95.5 |
| Truck 1 | S | 97.5 | S | 97.3 | S | 95.5 |
| For-hire truck | S | 58.8 | S | 61.9 | S | 61.9 |
| Private truck | S | 35.0 | 1.5 | 28.8 | 0.4 | S |
| Rail | S | – | S | – | S | – |
| Water | – | – | – | – | – | – |
| Air (includes truck and air) | S | S | S | S | S | S |
| Pipeline 2 | – | – | – | – | S | S |
| Multiple modes | S | S | S | S | S | S |
| Parcel, U.S.P.S. or courier | S | S | S | S | S | S |
| Other multiple modes | – | S | – | S | – | S |
| Other and unknown modes | S | S | S | S | S | S |
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.
Updated: Saturday, May 20, 2017