Table 1a. Hazardous Material Shipment Characteristics by Mode of Transportation: 2007
Table 1a. Hazardous Material Shipment Characteristics by Mode of Transportation: 2007
Estimates are based on data from the 2007 Commodity Flow Survey. Because of rounding, estimates may not be additive.
| Mode of transportation | Value | Tons | Ton-miles 1 | Average miles per shipment |
Value | Tons | Ton-miles | Avg. miles per shipment CV | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2007 (million $) |
Percent | 2007 (thousands) |
Percent | 2007 (millions) |
Percent | CV 2 | Standard Error % | CV | Standard Error % | CV | Standard Error % | |||
| All modes | 1,448,218 | 100 | 2,231,133 | 100 | 323,457 | 100 | 96 | 2.6 | - | 3.3 | - | 4.6 | - | 8.1 |
| Single modes | 1,370,615 | 94.6 | 2,111,622 | 94.6 | 279,105 | 86.3 | 65 | 2.4 | 0.6 | 3.2 | 0.6 | 4.1 | 1.6 | 8.6 |
| Truck 3 | 837,074 | 57.8 | 1,202,825 | 53.9 | 103,997 | 32.2 | 59 | 3.4 | 1.5 | 5.4 | 1.8 | 6.5 | 1.9 | 9.4 |
| For-hire truck | 358,792 | 24.8 | 495,077 | 22.2 | 63,288 | 19.6 | 214 | 5.9 | 1.8 | 6.5 | 1.6 | 8.2 | 1.8 | 20.1 |
| Private truck | 478,282 | 33.0 | 707,748 | 31.7 | 40,709 | 12.6 | 32 | 5.5 | 1.1 | 7.4 | 1.3 | 9.3 | 1 | 4.5 |
| Rail | 69,213 | 4.8 | 129,743 | 5.8 | 92,169 | 28.5 | 578 | 8.2 | 0.4 | 10.4 | 0.5 | 8 | 1.6 | 11.2 |
| Water | 69,186 | 4.8 | 149,794 | 6.7 | 37,064 | 11.5 | 383 | 15.9 | 0.7 | 13.3 | 0.8 | 15.2 | 1.8 | 22.8 |
| Shallow draft | 57,022 | 3.9 | 124,396 | 5.6 | 22,411 | 6.9 | S | 19 | 0.7 | 16.1 | 0.8 | 26.3 | 1.8 | S |
| Great Lakes | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Deep draft | 11,626 | 0.8 | 24,181 | 1.1 | 13,767 | 4.3 | 861 | 13.2 | 0.1 | 13.8 | 0.2 | 23.2 | 1.1 | 16.5 |
| Air (includes truck and air) | 1,735 | 0.1 | S | S | S | S | 1,095 | 34.9 | 0.1 | S | S | S | S | 7.5 |
| Pipeline 4 | 393,408 | 27.2 | 628,905 | 28.2 | S | S | S | 5.7 | 1.5 | 5.3 | 1.8 | S | S | S |
| Multiple modes | 71,069 | 4.9 | 111,022 | 5.0 | 42,886 | 13.3 | 834 | 12.5 | 0.5 | 13.5 | 0.6 | 14.4 | 1.6 | 5.4 |
| Parcel, U.S.P.S. or courier | 7,675 | 0.5 | 236 | - | 151 | - | 836 | 19.4 | 0.1 | 16.7 | - | 28.9 | - | 5.6 |
| Truck and rail | 7,052 | 0.5 | 11,706 | 0.5 | 10,120 | 3.1 | 779 | 16.8 | 0.1 | 16.2 | 0.1 | 18.2 | 0.5 | 11.2 |
| Truck and water | 23,451 | 1.6 | 36,588 | 1.6 | 12,380 | 3.8 | 1,010 | 24.8 | 0.3 | 23.5 | 0.3 | 20.1 | 0.7 | 28.4 |
| Rail and water | 5,153 | 0.4 | 5,742 | 0.3 | 2,937 | 0.9 | 1,506 | 20.4 | 0.1 | 19.1 | 0.1 | 24.1 | 0.2 | 22.6 |
| Other multiple modes | 27,739 | 1.9 | 56,750 | 2.5 | 17,297 | 5.3 | 233 | 20.3 | 0.4 | 19.9 | 0.5 | 25.6 | 1.2 | 13.8 |
| Other and unknown modes | 6,534 | 0.5 | 8,489 | 0.4 | 1,466 | 0.5 | 58 | 9.2 | - | 10.8 | - | 24.6 | 0.1 | 26.8 |
KEY: S = Estimate does not meet publication standards because of high sampling variability or poor response quality. - = Zero or Less than half the unit show; thus, it has been rounded to zero.
1 Ton-miles estimates are based on
estimated distances traveled along a modeled transportation network.
2 Coefficient of Variation
3 "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.
4 Estimates for pipeline exclude shipments of crude petroleum.
NOTES: Value-of-shipment estimates are reported in current prices. Estimated measures of sampling variability for each estimate known as coefficents of variations (CV) are also provided in these tables. More information on sampling error, confidentiality protection, nonsampling error, sample design, and definitions may be found at http://www.bts.gov/publications/commodity_flow_survey/.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2007 Economic Census: Transportation Commodity Flow Survey, December 2009.