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Table 7. Hazardous Material Shipment Characteristics by Hazard Class Division and Mode of Transportation: 2012

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(Estimates are based on data from the 2012 Commodity Flow Survey. Because of rounding, estimates may not be additive)

Hazard class division and mode of transportation Value Tons Ton-miles (1) Average miles per shipment
2012
(million dollars)
Percent of total 2012
(thousands)
Percent of total 2012
(millions)
Percent of total
Division 1.1, Explosives with a mass explosion hazard              
All modes S S S S S S S
Single modes S S S S S S S
Truck (2) S S S S S S S
 For-hire truck S S S S S S S
 Private truck S S S S S S S
Rail 0 0.0 0 0.0 0 0.0 0
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) 0 0.0 0 0.0 0 0.0 0
Pipeline (3) 0 0.0 0 0.0 0 0.0 0
Multiple modes 0 0.0 0 0.0 0 0.0 0
Parcel, U.S. Postal Service, or courier 0 0.0 0 0.0 0 0.0 0
Truck and rail 0 0.0 0 0.0 0 0.0 0
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 1.2, Explosives with a projection hazard              
All modes S S S S S S S
Single modes S S S S S S S
Truck (2) S S S S S S S
 For-hire truck S S S S S S S
 Private truck S S S S S S S
Rail 0 0.0 0 0.0 0 0.0 0
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) 0 0.0 0 0.0 0 0.0 0
Pipeline (3) 0 0.0 0 0.0 0 0.0 0
Multiple modes 0 0.0 0 0.0 0 0.0 0
Parcel, U.S. Postal Service, or courier 0 0.0 0 0.0 0 0.0 0
Truck and rail 0 0.0 0 0.0 0 0.0 0
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 1.3, Explosives with predominantly a fire hazard              
All modes 632 100.0 29 100.0 16 100.0 698
Single modes 568 89.9 S S 14 88.4 S
Truck (2) 388 61.5 S S S S 404
 For-hire truck 318 50.4 S S S S 591
 Private truck 70 11.1 5 15.8 S S 87
Rail 0 0.0 0 0.0 0 0.0 0
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) S S S S S S 2,347
Pipeline (3) 0 0.0 0 0.0 0 0.0 0
Multiple modes S S S S S S 787
Parcel, U.S. Postal Service, or courier S S S S S S 787
Truck and rail 0 0.0 0 0.0 0 0.0 0
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 1.4, Explosives with no significant blast hazard              
All modes 12,465 100.0 777 100.0 454 100.0 907
Single modes 10,936 87.7 720 92.7 395 87.1 963
Truck (2) 10,398 83.4 713 91.8 386 85.0 945
 For-hire truck 9,981 80.1 648 83.3 382 84.0 1,013
 Private truck 417 3.3 65 8.4 4 1.0 133
Rail S S S S S S S
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) 509 4.1 2 0.3 3 0.7 1,517
Pipeline (3) 0 0.0 0 0.0 0 0.0 0
Multiple modes 1,530 12.3 57 7.3 59 12.9 899
Parcel, U.S. Postal Service, or courier 1,317 10.6 43 5.5 40 8.7 897
Truck and rail 212 1.7 14 1.8 19 4.1 1,680
Truck and water S S S S S S S
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 1.5, Very insensitive explosives, blasting agent              
All modes 5,264 100.0 3,227 100.0 538 100.0 340
Single modes 5,221 99.2 3,225 99.9 534 99.2 S
Truck (2) 5,191 98.6 3,222 99.9 532 98.9 S
 For-hire truck 2,043 38.8 398 12.3 305 56.7 860
 Private truck 3,148 59.8 2,824 87.5 227 42.2 51
Rail S S S S S S S
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) 30 0.6 1 Z 1 0.2 1,244
Pipeline (3) 0 0.0 0 0.0 0 0.0 0
Multiple modes 43 0.8 S S S S 1,091
Parcel, U.S. Postal Service, or courier 41 0.8 S S S S 1,091
Truck and rail 2 Z 1 Z 4 0.7 3,184
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 1.6, Extremely insensitive detonating substances              
All modes 0 0.0 0 0.0 0 0.0 0
Single modes 0 0.0 0 0.0 0 0.0 0
Truck (2) 0 0.0 0 0.0 0 0.0 0
 For-hire truck 0 0.0 0 0.0 0 0.0 0
 Private truck 0 0.0 0 0.0 0 0.0 0
Rail 0 0.0 0 0.0 0 0.0 0
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) 0 0.0 0 0.0 0 0.0 0
Pipeline (3) 0 0.0 0 0.0 0 0.0 0
Multiple modes 0 0.0 0 0.0 0 0.0 0
Parcel, U.S. Postal Service, or courier 0 0.0 0 0.0 0 0.0 0
Truck and rail 0 0.0 0 0.0 0 0.0 0
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 2.1, Flammable gas              
All modes 77,387 100.0 81,928 100.0 15,147 100.0 38
Single modes 76,748 99.2 81,348 99.3 14,953 98.7 37
Truck (2) 38,082 49.2 40,429 49.3 4,153 27.4 35
 For-hire truck 7,378 9.5 7,794 9.5 1,315 8.7 43
 Private truck 30,704 39.7 32,635 39.8 2,838 18.7 34
Rail 9,259 12.0 7,860 9.6 6,905 45.6 780
Water 8,457 10.9 10,129 12.4 1,186 7.8 133
 Inland water 5,524 7.1 5,984 7.3 654 4.3 107
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 961 1.2 2,435 3.0 112 0.7 S
 Multiple waterways 1,972 2.5 1,710 2.1 421 2.8 240
Air (includes truck and air) S S S S S S 1,810
Pipeline (3) 20,927 27.0 22,929 28.0 S S S
Multiple modes 640 0.8 S S 193 1.3 406
Parcel, U.S. Postal Service, or courier S S S S S S 399
Truck and rail 173 0.2 190 0.2 186 1.2 774
Truck and water S S S S S S S
Rail and water S S S S S S 12
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 2.2, Nonflammable, nonpoisonous compressed gas              
All modes 42,142 100.0 71,813 100.0 14,451 100.0 79
Single modes 39,927 94.7 70,889 98.7 13,736 95.1 55
Truck (2) 34,693 82.3 59,520 82.9 8,986 62.2 49
 For-hire truck 13,960 33.1 10,188 14.2 5,153 35.7 182
 Private truck 20,733 49.2 49,332 68.7 3,833 26.5 28
Rail 2,203 5.2 4,617 6.4 2,391 16.5 578
Water 1,515 3.6 3,538 4.9 S S S
 Inland water 1,515 3.6 3,538 4.9 S S S
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) S S S S S S 1,563
Pipeline (3) 1,230 2.9 3,174 4.4 S S S
Multiple modes 2,215 5.3 924 1.3 715 4.9 623
Parcel, U.S. Postal Service, or courier 1,836 4.4 20 Z S S 628
Truck and rail 331 0.8 900 1.3 697 4.8 S
Truck and water S S S S S S 2,768
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 2.3, Gas poisonous by inhalation              
All modes 5,525 100.0 11,052 100.0 3,560 100.0 191
Single modes 5,491 99.4 11,045 99.9 3,551 99.7 145
Truck (2) 2,469 44.7 3,935 35.6 566 15.9 106
 For-hire truck 1,056 19.1 1,129 10.2 345 9.7 576
 Private truck 1,413 25.6 2,806 25.4 221 6.2 46
Rail 2,271 41.1 4,321 39.1 2,965 83.3 705
Water S S Z Z Z Z 138
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea S S Z Z Z Z 138
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) S S S S S S 1,271
Pipeline (3) 726 13.1 2,788 25.2 S S S
Multiple modes 33 0.6 S S S S 922
Parcel, U.S. Postal Service, or courier 31 0.6 S S S S 923
Truck and rail S S S S S S S
Truck and water S S Z Z Z Z S
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 4.1, Flammable solid              
All modes 2,072 100.0 8,858 100.0 4,355 100.0 730
Single modes 2,022 97.6 8,853 99.9 4,345 99.8 219
Truck (2) 1,356 65.5 5,263 59.4 609 14.0 160
 For-hire truck 1,025 49.5 4,376 49.4 582 13.4 183
 Private truck 331 16.0 887 10.0 27 0.6 37
Rail 488 23.5 3,079 34.8 3,708 85.2 794
Water S S S S 27 0.6 129
 Inland water S S S S 15 0.3 S
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways S S S S S S S
Air (includes truck and air) S S S S S S S
Pipeline (3) S S S S S S S
Multiple modes 50 2.4 5 0.1 S S 1,647
Parcel, U.S. Postal Service, or courier S S S S S S 1,646
Truck and rail 14 0.7 3 Z 8 0.2 2,101
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 4.2, Spontaneously combustible material              
All modes 1,674 100.0 473 100.0 789 100.0 S
Single modes 1,482 88.5 421 89.0 659 83.5 541
Truck (2) 828 49.5 109 23.0 53 6.7 463
 For-hire truck 490 29.3 62 13.1 S S 1,023
 Private truck S S S S S S 121
Rail 652 38.9 312 66.0 607 76.9 1,944
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) S S Z Z S S 684
Pipeline (3) 0 0.0 0 0.0 0 0.0 0
Multiple modes 192 11.5 52 11.0 130 16.5 S
Parcel, U.S. Postal Service, or courier S S S S S S S
Truck and rail 97 5.8 49 10.4 129 16.3 2,610
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 4.3, Dangerous when wet material              
All modes 1,669 100.0 1,990 100.0 660 100.0 749
Single modes 1,663 99.6 1,990 100.0 660 100.0 728
Truck (2) 1,261 75.5 1,386 69.6 364 55.1 197
 For-hire truck 1,063 63.7 1,176 59.1 346 52.3 306
 Private truck S S S S S S 70
Rail 213 12.7 S S S S 963
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) S S S S S S 1,232
Pipeline (3) S S S S S S S
Multiple modes S S S S S S 884
Parcel, U.S. Postal Service, or courier S S S S S S 884
Truck and rail 0 0.0 0 0.0 0 0.0 0
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 5.1, Oxidizer              
All modes 6,857 100.0 11,822 100.0 5,385 100.0 439
Single modes 6,672 97.3 11,616 98.3 5,230 97.1 267
Truck (2) 4,936 72.0 6,763 57.2 1,931 35.9 236
 For-hire truck 2,960 43.2 3,686 31.2 1,460 27.1 512
 Private truck 1,975 28.8 3,077 26.0 472 8.8 65
Rail 1,694 24.7 4,603 38.9 3,260 60.5 714
Water S S S S S S S
 Inland water S S S S S S S
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea S S S S S S S
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) S S Z Z S S S
Pipeline (3) 32 0.5 151 1.3 S S S
Multiple modes 184 2.7 206 1.7 155 2.9 756
Parcel, U.S. Postal Service, or courier 95 1.4 S S S S 755
Truck and rail 84 1.2 191 1.6 121 2.2 920
Truck and water S S S S S S S
Rail and water 3 Z 10 0.1 29 0.5 2,909
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 5.2, Organic peroxide              
All modes 705 100.0 204 100.0 S S 397
Single modes 681 96.6 183 89.8 69 73.0 370
Truck (2) 681 96.5 183 89.8 69 73.0 355
 For-hire truck 424 60.2 83 40.7 S S 509
 Private truck 256 36.4 S S 18 19.0 146
Rail 0 0.0 0 0.0 0 0.0 0
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) Z Z S S Z Z 3,586
Pipeline (3) 0 0.0 0 0.0 0 0.0 0
Multiple modes S S S S S S 748
Parcel, U.S. Postal Service, or courier 1 0.2 S S Z 0.1 S
Truck and rail 23 3.3 21 10.2 S S S
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 6.1, Toxic (poisonous) materials              
All modes 15,058 100.0 7,611 100.0 3,606 100.0 487
Single modes 13,643 90.6 7,582 99.6 3,583 99.4 491
Truck (2) 7,456 49.5 1,987 26.1 650 18.0 302
 For-hire truck 4,424 29.4 1,041 13.7 601 16.7 641
 Private truck 3,031 20.1 946 12.4 49 1.4 53
Rail 3,457 23.0 3,072 40.4 2,376 65.9 766
Water 2,382 15.8 2,502 32.9 539 15.0 232
 Inland water 2,382 15.8 2,502 32.9 539 15.0 232
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) 344 2.3 S S S S 1,029
Pipeline (3) S S S S S S S
Multiple modes S S 29 0.4 23 0.6 480
Parcel, U.S. Postal Service, or courier S S 17 0.2 6 0.2 479
Truck and rail 19 0.1 12 0.2 17 0.5 1,189
Truck and water S S S S S S S
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0
Division 6.2, Infectious substance              
All modes 138 100.0 1 100.0 1 100.0 840
Single modes 75 54.0 1 84.0 Z 82.8 853
Truck (2) S S S S S S 421
 For-hire truck S S S S S S 421
 Private truck 0 0.0 0 0.0 0 0.0 0
Rail 0 0.0 0 0.0 0 0.0 0
Water 0 0.0 0 0.0 0 0.0 0
 Inland water 0 0.0 0 0.0 0 0.0 0
 Great Lakes 0 0.0 0 0.0 0 0.0 0
 Deep sea 0 0.0 0 0.0 0 0.0 0
 Multiple waterways 0 0.0 0 0.0 0 0.0 0
Air (includes truck and air) 46 33.1 Z 35.4 Z 61.1 863
Pipeline (3) 0 0.0 0 0.0 0 0.0 0
Multiple modes S S Z 16.0 S S 835
Parcel, U.S. Postal Service, or courier S S Z 16.0 S S 835
Truck and rail 0 0.0 0 0.0 0 0.0 0
Truck and water 0 0.0 0 0.0 0 0.0 0
Rail and water 0 0.0 0 0.0 0 0.0 0
Other multiple modes 0 0.0 0 0.0 0 0.0 0
Other modes 0 0.0 0 0.0 0 0.0 0

KEY: S = Withheld because estimate did not meet publication standards.

Z = Rounds to zero.

(1) Ton-miles estimates are based on estimated distances traveled along a modeled transportation network. See “Mileage Calculations” section for additional information.

(2) “Truck” as a single mode includes shipments that were made by only private truck or only for-hire truck.

(3) Estimates for pipeline exclude shipments of crude petroleum (SCTG 16).

NOTES: Value-of-shipments estimates have not been adjusted for price changes. Appendix B tables provide estimated measures of sampling variability. The Introduction and appendixes give information on confidentiality protection, sampling error, nonsampling error, sample design and definitions. Links to this information on the Internet may be found at <www.census.gov/econ/cfs>.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2012 Economic Census: Transportation Commodity Flow Survey, December 2014.

Updated: Friday, May 19, 2017