Table 8. Shipment Characteristics by Two-Digit Commodity and Mode of Transportation for Metropolitan Area of Origin: 2007

Table 8. Shipment Characteristics by Two-Digit Commodity and Mode of Transportation for Metropolitan Area of Origin: 2007

Estimates are based on data from the 2007 Commodity Flow Survey. Because of rounding, estimates may not be additive.

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All Commodities5

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 101,894 100 81,674 100 15,726 100 335 4.5 - 13.1 - 19.7 - 14.4
Single modes 88,657 87 80,730 98.8 15,139 96.3 154 6.3 2.1 13.2 0.3 20.6 0.8 24
Truck6 86,758 85.1 79,180 96.9 14,500 92.2 143 6.6 2.2 13 0.7 20.6 1.3 22.4
For-hire truck 39,491 38.8 33,914 41.5 10,958 69.7 348 13.2 3.6 21.9 3.5 24.5 2.6 32.6
Private truck 47,267 46.4 45,266 55.4 3,542 22.5 79 9 3.5 8.6 3.8 11.3 1.9 16.7
Rail 498 0.5 1,536 1.9 622 4 618 32.3 0.2 45.4 0.7 39.3 1.5 30.6
Air (incl truck and air) 1,401 1.4 15 - 17 0.1 1,315 18.8 0.3 28.9 - 36.2 0.1 6.8
Multiple modes 11,224 11 525 0.6 433 2.8 659 14.5 2.1 11.9 0.2 13.9 0.6 12.4
Parcel, U.S.P.S. or courier 10,718 10.5 232 0.3 194 1.2 659 15.1 2.1 21.2 0.2 23 0.6 12.4
Truck and rail 280 0.3 270 0.3 216 1.4 1,193 25.4 0.1 28.6 0.1 36.3 0.5 17.8
Truck and water S S S S S S 4,254 S S S S S S 26.6
Other and unknown modes 2,013 2 420 0.5 154 1 232 32 0.6 37.4 0.2 24.9 0.4 29.1

SCTG2 01, Live animals and live fish

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S S S S S S S S S S S S S
Single modes S S S S S S S S S S S S S S
Truck6 S S S S S S S S S S S S S S
For-hire truck S S S S S S S S S S S S S S
Private truck S S S S S S S S S S S S S S

SCTG2 02, Cereal grains

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S S S S S S S S S S S S S
Single modes S S S S S S S S S S S S S S
Truck6 S S S S S S S S S S S S S S
Private truck S S S S S S S S S S S S S S

SCTG2 03, Other agricultural products

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S S S S S S S S S S S S S
Single modes S S S S S S S S S S S S S S
Truck6 S S S S S S S S S S S S S S
For-hire truck S S S S S S S S S S S S S S
Private truck S S S S S S S S S S S S S S

SCTG2 04, Animal feed and products of animal origin, nec

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,262 100 2,180 100 320 100 S 35.8 - 37.9 - 40 - S
Single modes 1,261 99.9 2,179 99.9 319 99.8 S 35.8 - 37.9 - 40 0.1 S
Truck6 1,261 99.9 2,179 99.9 319 99.8 S 35.8 - 37.9 - 40 0.1 S
For-hire truck 573 45.4 972 44.6 180 56.1 S 30.2 12.5 37.6 15.7 32.8 13.7 S
Private truck 689 54.6 S S 140 43.7 S 37.9 12.2 S S 42.8 16.1 S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 05, Meat, fish, seafood, and their preparations

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 853 100 317 100 66 100 200 28.2 - 26.1 - 28.4 - 17.6
Single modes 853 100 317 100 66 100 200 28.2 - 26.1 - 28.4 - 17.6
Truck6 853 100 317 100 66 100 200 28.2 - 26.1 - 28.4 - 17.6
For-hire truck 85 9.9 13 4 9 13.4 1,041 21 6 4.9 3.7 48.3 6.7 36.3
Private truck 769 90.1 304 96 57 86.6 164 28.7 4.1 26.9 2.1 28.7 5.2 19.9

SCTG2 06, Milled grain products and preparations and bakery products

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 709 100 469 100 228 100 361 41.1 - 39.5 - 49.9 - 43.1
Single modes 709 100 469 100 228 100 362 39 - 37.3 - 48.3 - 48.8
Truck6 709 100 469 100 228 100 362 39 - 37.3 - 48.3 - 48.8
For-hire truck 429 60.5 275 58.7 181 79.2 615 33.6 13.3 38.1 13.6 39.3 7.6 30.4
Private truck 280 39.5 193 41.3 S S S 36.2 19.7 31.3 19 S S S
Multiple modes S S S S S S S S S S S S S S
Parcel, U.S.P.S. or courier S S S S S S S S S S S S S S

SCTG2 07, Other prepared foodstuffs and fats and oils

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 7,463 100 4,985 100 2,174 100 110 16.4 - 18.5 - 21.5 - 32.3
Single modes 7,260 97.3 4,910 98.5 2,110 97.1 109 16.6 1.4 19 1.7 22.6 2.7 32.3
Truck6 7,155 95.9 4,785 96 2,051 94.3 109 16.6 1.5 17.7 1.7 20.8 2.5 32.2
For-hire truck 3,471 46.5 2,144 43 1,565 72 700 12.8 6.2 15.1 6.1 18.8 5.2 9.9
Private truck 3,684 49.4 2,641 53 485 22.3 58 25.9 5.9 23.1 6 33.8 3.8 22
Rail S S S S S S S S S S S S S S
Air (incl truck and air) S S S S S S S S S S S S S S
Multiple modes S S S S S S S S S S S S S S
Parcel, U.S.P.S. or courier - - S S S S S 36.4 - S S S S S
Truck and rail 36 0.5 9 0.2 27 1.3 3,151 32.8 0.8 35 0.3 32.3 2.8 1
Other and unknown modes 166 2.2 66 1.3 36 1.7 495 29.7 2.2 28.7 2.8 30.4 4.4 10.5

SCTG2 08, Alcoholic beverages

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,824 100 1,948 100 724 100 58 11.3 - 15.3 - 36.4 - 24
Single modes 1,811 99.2 1,945 99.8 723 99.9 47 11.8 1.1 15.4 0.2 36.5 0.5 28.5
Truck6 1,808 99.1 1,943 99.7 719 99.4 47 11.8 1.2 15.4 0.3 36.8 2.7 28.6
For-hire truck 824 45.2 1,024 52.6 684 94.6 597 33.9 11.5 36.5 12.8 38.5 12 17.5
Private truck 984 53.9 919 47.2 35 4.8 31 18 11.1 17.5 12.7 14.3 11.4 6.1
Rail S S 2 0.1 S S 1,902 S S 45.4 0.6 S S 6.1
Multiple modes S S 3 0.2 S S S S S 49.9 0.8 S S S
Parcel, U.S.P.S. or courier S S S S - - S S S S S 45.7 0.4 S
Truck and rail S S S S S S S S S S S S S S

SCTG2 09, Tobacco products

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 199 100 6 100 - 100 S 8.7 - 12.3 - 40.5 - S
Single modes 169 84.7 5 81.1 - 91.4 S 16.8 12.5 28.9 19.4 42.3 15.7 S
Truck6 169 84.7 5 81.1 - 91.4 S 16.8 12.5 28.9 19.4 42.3 15.7 S
Private truck 169 84.7 5 81.1 - 91.4 S 16.8 12.5 28.9 19.4 42.3 15.7 S
Multiple modes S S S S S S S S S S S S S S
Parcel, U.S.P.S. or courier S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 10, Calcareous monumental or building stone

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S S S S S 748 S S S S S S 26.1
Single modes 96 96.3 S S S S 582 49.9 4.2 S S S S 29.5
Truck6 96 96.3 S S S S 582 49.9 4.2 S S S S 29.5
For-hire truck S S S S S S 930 S S S S S S 19.9
Private truck S S S S S S 141 S S S S S S 29.1
Multiple modes S S S S S S S S S S S S S S
Parcel, U.S.P.S. or courier S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 11, Natural sands

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S 1,355 100 S S 63 S S 37.7 - S S 25.7
Single modes S S 1,355 100 S S 63 S S 37.7 - S S 25.7
Truck6 S S 1,355 100 S S 63 S S 37.7 - S S 25.7
For-hire truck S S S S S S 98 S S S S S S 46.6
Private truck S S 1,130 83.4 S S 57 S S 38.5 9.3 S S 25.4

SCTG2 12, Gravel and crushed stone

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 149 100 17,879 100 609 100 31 19.6 - 24.2 - 27.7 - 13.4
Single modes 149 100 17,879 100 609 100 31 19.6 - 24.2 - 27.7 - 13.4
Truck6 146 97.8 17,361 97.1 574 94.2 31 19.4 1.4 23.8 1.5 28.1 3.3 13.7
For-hire truck 51 34.2 5,200 29.1 292 47.9 S 26.1 6.2 34.3 6.3 44.6 10.5 S
Private truck 95 63.6 12,161 68 282 46.3 22 18.1 6.7 20.8 6.8 27.6 11.2 20.6
Rail S S S S S S S S S S S S S S

SCTG2 13, Nonmetallic minerals nec

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S S S S S 323 S S S S S S 25
Single modes S S S S S S 323 S S S S S S 25
Truck6 S S S S S S 322 S S S S S S 25
For-hire truck S S S S S S 344 S S S S S S 36.8
Private truck S S S S S S 173 S S S S S S 23.8
Rail S S S S S S S S S S S S S S

SCTG2 15, Nonagglomerated bituminous coal

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 17, Gasoline and aviation turbine fuel

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,164 100 1,648 100 32 100 20 30.7 - 24.4 - 13.5 - 17.5
Single modes 1,164 100 1,648 100 32 100 20 30.7 - 24.4 - 13.5 - 17.5
Truck6 1,164 100 1,648 100 32 100 20 30.7 - 24.4 - 13.5 - 17.5
For-hire truck S S S S S S S S S S S S S S
Private truck 736 63.2 1,147 69.6 30 92.8 21 14.2 13.3 15.9 12 17.6 9.2 16.2

SCTG2 18, Fuel oils

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,114 100 1,747 100 39 100 22 22.1 - 20.1 - 22.2 - 11.9
Single modes 1,114 99.9 1,747 100 39 100 22 22.1 - 20.1 - 22.2 - 11.9
Truck6 1,114 99.9 1,747 100 39 100 22 22.1 - 20.1 - 22.2 - 11.9
For-hire truck S S S S 2 4 S S S S S 31.7 18.6 S
Private truck 928 83.3 1,474 84.4 37 95.9 22 25 8.9 23.5 9 23.4 3 18.1
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 19, Coal and petroleum products, nec

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,278 100 4,855 100 156 100 37 48.5 - 31.5 - 28.1 - 23.7
Single modes 1,274 99.7 4,842 99.7 155 99.5 37 48.7 0.5 31.4 0.1 28.2 0.4 23.7
Truck6 1,274 99.7 4,842 99.7 155 99.5 37 48.7 0.5 31.4 0.1 28.2 0.4 23.7
For-hire truck S S S S S S 21 S S S S S S 25.6
Private truck S S 3,214 66.2 120 77.1 38 S S 21.7 7.5 33 7.4 23.8
Multiple modes S S S S S S S S S S S S S S
Truck and rail S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 20, Basic chemicals

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S S S S S S S S S S S S S
Single modes S S S S S S S S S S S S S S
Truck6 S S S S S S S S S S S S S S
For-hire truck S S S S S S 861 S S S S S S 23.8
Private truck S S S S S S S S S S S S S S
Rail S S S S S S S S S S S S S S
Air (incl truck and air) S S S S S S S S S S S S S S
Multiple modes S S S S S S S S S S S S S S
Parcel, U.S.P.S. or courier S S S S S S S S S S S S S S
Truck and rail S S S S S S S S S S S S S S
Truck and water S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 21, Pharmaceutical products

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S 115 100 42 100 S S S 33.5 - 33.4 - S
Single modes S S 103 89.6 37 87.5 S S S 38.1 9.5 36.4 8.7 S
Truck6 S S 103 89.1 36 85.5 S S S 38.4 9.5 37.7 9.9 S
For-hire truck S S 59 50.9 34 79.1 S S S 49.8 14.1 41.1 11.7 S
Private truck S S S S S S 41 S S S S S S 29.7
Air (incl truck and air) S S S S S S 1,330 S S S S S S 5.6
Multiple modes 741 6.9 12 10.4 5 12.5 S 38.9 13.1 49.7 10.5 32.4 9.6 S
Parcel, U.S.P.S. or courier 739 6.9 11 10 5 12 S 38.9 13 48.8 10.4 31.5 9.4 S
Truck and water S S S S S S S S S S S S S S
Other and unknown modes 2 - S S S S 348 20.4 0.3 S S S S 29.1

SCTG2 22, Fertilizers

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 32 100 S S 3 100 55 1.2 - S S 41 - 26.5
Single modes 32 100 S S 3 100 55 1.2 - S S 41 - 26.5
Truck6 32 100 S S 3 100 55 1.2 - S S 41 - 26.5
Private truck 32 100 S S 3 100 55 1.2 - S S 41 - 26.5

SCTG2 23, Chemical products and preparations, nec

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 501 100 151 100 71 100 409 39.9 - 25.8 - 30.8 - 38.5
Single modes 447 89.3 149 98.6 69 96.8 S 36.8 5 26.3 6.4 31.3 9.7 S
Truck6 441 88.1 148 98.3 69 96.1 S 37.5 5.6 26.4 6.7 31.8 10.6 S
For-hire truck S S 98 64.6 60 84.7 1,015 S S 33.9 12.3 31.2 11.4 21.3
Private truck 102 20.4 51 33.7 8 11.5 S 47.1 10.4 40.4 10.9 36.7 9.6 S
Air (incl truck and air) S S S S S S 1,091 S S S S S S 21.4
Multiple modes S S 2 1.4 2 3.2 807 S S 35.8 6.4 44.5 9.7 20.1
Parcel, U.S.P.S. or courier S S 2 1.4 2 3.2 807 S S 35.8 6.4 44.5 9.7 20.1
Other and unknown modes S S S S S S 27 S S S S S S 19.7

SCTG2 24, Plastics and rubber

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 2,125 100 663 100 227 100 530 16 - 35.2 - 17 - 16.5
Single modes 1,736 81.7 637 96.1 205 90.7 255 16 4.5 36.1 1.2 18.1 1.5 26.8
Truck6 1,720 80.9 632 95.3 201 88.5 234 16.3 4.5 36.6 1.9 19.1 3.8 30.2
For-hire truck 1,353 63.7 519 78.3 185 81.6 451 21 8 42.2 8.6 20.7 6 20.2
Private truck 367 17.3 113 17 16 6.9 47 19.6 6.6 20.1 8.1 19.1 4.7 35.8
Rail S S S S S S S S S S S S S S
Air (incl truck and air) S S S S S S 817 S S S S S S 40.7
Multiple modes 345 16.3 15 2.2 15 6.8 778 40.2 4.5 15.1 0.9 24 1.3 16.5
Parcel, U.S.P.S. or courier 337 15.9 12 1.8 10 4.3 776 41.3 4.5 20.5 0.9 31 1.3 16.1
Truck and rail 8 0.4 3 0.4 6 2.5 1,953 24.7 0.8 22.4 1.3 34.4 4.1 35.7
Other and unknown modes 43 2 11 1.7 6 2.6 S 41.8 0.7 44.5 1.2 36.9 1.4 S

SCTG2 25, Logs and other wood in the rough

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 39 100 251 100 43 100 S 27.2 - 31.7 - 25.7 - S
Single modes 38 97.8 236 94.3 38 90 118 28.3 4.5 30.6 3.7 30.9 10.3 23.4
Truck6 38 97.8 236 94.3 38 90 118 28.3 4.5 30.6 3.7 30.9 10.3 23.4
For-hire truck 14 36.8 64 25.5 23 53.8 393 42.7 15 38.3 10.9 36 11.2 34.5
Private truck 24 60.9 173 68.9 15 36.2 62 38.9 11.8 36.2 8.2 29.8 12 29
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 26, Wood products

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,677 100 3,207 100 571 100 293 11.9 - 21.1 - 18.2 - 11.1
Single modes 1,585 94.6 3,082 96.1 551 96.5 167 11.1 1.5 20.1 1.5 18.6 1.3 17
Truck6 1,547 92.3 3,066 95.6 541 94.7 127 11 2.2 20 1.6 18.6 2 24.3
For-hire truck 486 29 1,273 39.7 370 64.8 332 18.7 5.1 26.7 7.8 25.2 9.1 13.6
Private truck 1,062 63.3 1,793 55.9 171 29.9 62 12.8 3.8 24.2 7.7 23 8.3 20
Rail 38 2.3 15 0.5 10 1.7 S 37.4 1.5 36.9 0.3 45 2.7 S
Multiple modes 64 3.8 26 0.8 19 3.3 960 34.9 1.2 33.2 0.2 34 1.4 21.7
Parcel, U.S.P.S. or courier S S S S S S 934 S S S S S S 25.2
Truck and rail 51 3 23 0.7 17 2.9 1,069 37.7 1.7 30.7 0.3 33.5 2.1 23.1
Other and unknown modes S S S S 1 0.2 S S S S S 47.9 0.3 S

SCTG2 27, Pulp, newsprint, paper, and paperboard

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,462 100 1,894 100 785 100 251 17.1 - 24.5 - 22.6 - 39.9
Single modes 1,366 93.4 1,728 91.2 713 90.8 S 18.5 3.4 25.7 4.5 23.1 5.6 S
Truck6 1,299 88.9 1,614 85.2 632 80.6 S 19.1 4.8 26.1 5.3 22.6 5.8 S
For-hire truck 947 64.8 1,146 60.5 586 74.7 503 16.4 9.6 24.4 10.1 22.3 6.4 22.4
Private truck S S S S S S S S S S S S S S
Rail 66 4.5 114 6 80 10.2 S 11.8 6.4 18.5 5.7 26.5 4.9 S
Multiple modes 95 6.5 163 8.6 71 9.1 630 37.5 3.9 48.2 5.1 49.6 6.3 15.9
Parcel, U.S.P.S. or courier 12 0.8 2 0.1 S S 634 42.3 0.6 40.6 0.2 S S 23.2
Truck and rail 81 5.5 159 8.4 70 8.9 544 12.5 11.4 13.1 13.8 18.9 17.7 26
Truck and water S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 28, Paper or paperboard articles

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,582 100 1,664 100 415 100 879 22.7 - 47.2 - 34.6 - 19
Single modes 1,163 73.5 1,609 96.7 314 75.7 S 16 9.2 49.2 4.4 27.5 8.5 S
Truck6 1,157 73.1 1,609 96.7 314 75.6 S 16.2 9.4 49.3 4.5 27.5 8.5 S
For-hire truck 917 58 S S 296 71.5 282 17.5 9.5 S S 27.4 8.2 49.3
Private truck 240 15.1 161 9.7 17 4.1 S 39.2 6.7 36.4 8.4 43.5 2.5 S
Air (incl truck and air) S S S S S S S S S S S S S S
Multiple modes S S S S S S 1,000 S S S S S S 13.8
Parcel, U.S.P.S. or courier S S S S S S 998 S S S S S S 13.2
Truck and rail S S S S S S S S S S S S S S
Truck and water S S S S S S S S S S S S S S
Other and unknown modes S S 3 0.2 S S 1,420 S S 49.5 4.6 S S 37.4

SCTG2 29, Printed products

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,460 100 S S S S S 45.4 - S S S S S
Single modes S S S S S S S S S S S S S S
Truck6 S S S S S S S S S S S S S S
For-hire truck S S S S S S S S S S S S S S
Private truck S S S S S S S S S S S S S S
Air (incl truck and air) S S S S S S S S S S S S S S
Multiple modes S S 17 2.3 S S S S S 39.7 19 S S S
Parcel, U.S.P.S. or courier S S 17 2.3 S S S S S 39.7 19 S S S
Other and unknown modes S S S S S S 20 S S S S S S 27.9

SCTG2 30, Textiles, leather, and articles of textiles or leather

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 644 100 44 100 34 100 1,048 27.6 - 28.3 - 37.3 - 13.7
Single modes 240 37.3 35 79.7 S S 321 35.3 11.9 33.4 11.4 S S 32.7
Truck6 239 37.1 35 79.6 S S 319 34.9 11.9 33.4 11.4 S S 32.9
For-hire truck 181 28.1 29 66.4 S S 916 45.6 13.2 42 16.3 S S 18.4
Private truck S S S S S S S S S S S S S S
Air (incl truck and air) S S S S S S S S S S S S S S
Multiple modes 394 61.2 8 18.3 S S 1,071 37.8 10.6 40.7 14.4 S S 15
Parcel, U.S.P.S. or courier 394 61.2 8 18.3 S S 1,071 37.8 10.6 40.7 14.4 S S 15
Other and unknown modes 10 1.5 1 2 S S S 38.3 7.5 29.4 5.6 S S S

SCTG2 31, Nonmetallic mineral products

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 1,714 100 5,169 100 448 100 537 24.9 - 23.9 - 23.2 - 17.2
Single modes 1,574 91.8 5,164 99.9 444 99.1 479 24 4.8 23.9 - 22.9 0.3 20.3
Truck6 1,550 90.4 5,164 99.9 443 99 478 23.9 4.8 23.9 0.1 22.9 0.3 20.6
For-hire truck 996 58.1 1,103 21.3 315 70.5 933 28.7 8.9 34.5 10.6 32.2 10 14.7
Private truck 554 32.3 4,061 78.6 128 28.6 43 26.5 7.3 29.7 10.6 30.5 10 16.2
Air (incl truck and air) S S S S S S 679 S S S S S S 31.9
Multiple modes S S S S S S 953 S S S S S S 16.9
Parcel, U.S.P.S. or courier S S S S S S 925 S S S S S S 15.9
Truck and water S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 32, Base metal in prim. or semifin. forms & in finished basic shapes

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 8,961 100 6,169 100 1,515 100 472 17.7 - 33.1 - 22.5 - 24.2
Single modes 8,643 96.5 6,116 99.1 1,464 96.6 S 18.7 4 33.4 4.1 23.8 7.5 S
Truck6 8,412 93.9 5,991 97.1 1,319 87 S 19.3 4.2 34.3 4.7 26.4 8 S
For-hire truck 5,519 61.6 2,313 37.5 1,090 71.9 487 24.1 8.8 27.7 13.2 32.6 9.5 16.3
Private truck 2,893 32.3 S S S S 58 46.1 9.2 S S S S 37.9
Rail S S S S S S 1,141 S S S S S S 21
Air (incl truck and air) S S S S S S 2,284 S S S S S S 38.5
Multiple modes 197 2.2 29 0.5 28 1.9 837 48.6 2.5 38.4 1.5 40.1 5.7 19.2
Parcel, U.S.P.S. or courier S S 5 0.1 4 0.3 837 S S 42.8 1.5 49.2 5.9 19.8
Truck and rail 54 0.6 23 0.4 24 1.6 1,468 17.3 0.4 34.1 0.4 30.6 1.5 31.7
Other and unknown modes S S S S S S 1,006 S S S S S S 44.5

SCTG2 33, Articles of base metal

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 2,623 100 1,319 100 S S 336 23.2 - 36.4 - S S 23.5
Single modes 2,317 88.3 1,280 97 S S 207 26.9 5.2 37.9 4.8 S S 38.3
Truck6 2,312 88.1 1,279 97 S S 199 27 5.4 37.9 4.8 S S 35.8
For-hire truck 1,622 61.8 1,056 80.1 S S 594 25.8 5.3 45.2 7 S S 12.1
Private truck 691 26.3 223 16.9 22 3.6 44 32.7 4.7 45.6 5.9 27.2 3 22.9
Air (incl truck and air) S S S S S S S S S S S S S S
Multiple modes 224 8.6 S S 11 1.8 561 32.6 3.1 S S 32.3 2 14.3
Parcel, U.S.P.S. or courier 217 8.3 S S 7 1.2 561 34.5 3.2 S S 44 1.4 14.3
Truck and water 7 0.3 - - 4 0.6 8,859 12.7 1.7 6.7 0.4 0.3 9.6 6.4
Other and unknown modes S S S S S S 92 S S S S S S 50

SCTG2 34, Machinery

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 6,373 100 490 100 349 100 581 11.4 - 18.3 - 23 - 15.7
Single modes 5,230 82.1 462 94.4 331 94.9 595 13.1 4.7 18.5 1.2 23.3 2.2 17.7
Truck6 5,026 78.9 461 94 329 94.4 586 14.3 5.4 18.6 1.3 23.5 2.6 19.3
For-hire truck 3,937 61.8 358 73.1 307 88.1 1,152 20.3 6.9 25.7 8.2 25.2 4.9 15.6
Private truck 1,090 17.1 103 20.9 22 6.3 262 20.4 4.3 27.7 7.6 42.1 3.9 26.3
Rail S S S S S S S S S S S S S S
Air (incl truck and air) 198 3.1 2 0.3 1 0.4 1,479 39.9 1.1 42.4 0.3 49.8 0.6 15.6
Multiple modes 910 14.3 13 2.6 8 2.2 555 39.7 4.2 25.9 1 29 2.3 13.9
Parcel, U.S.P.S. or courier 900 14.1 12 2.5 7 2.1 555 40.2 4.2 26.3 1 29.7 2.3 14
Truck and rail S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 35, Electronic & other electrical equip & components & office equip

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 7,576 100 173 100 107 100 647 7.3 - 27.1 - 25.6 - 15.6
Single modes 3,637 48 125 72.3 73 68.1 460 12.1 6 25.5 7.2 36.1 7.8 35.8
Truck6 3,106 41 121 70 68 63.2 289 14.6 6.2 26.7 7.2 39.7 8.3 37.6
For-hire truck 2,356 31.1 92 53.5 65 60.7 865 19.1 5.4 31 9.2 41.8 8.9 9.1
Private truck 751 9.9 S S 3 2.5 68 33.5 3.7 S S 39.7 3.1 43.1
Air (incl truck and air) 531 7 4 2.3 5 4.9 1,418 27 1.7 28 1.5 42.6 3 12.1
Multiple modes 3,357 44.3 20 11.5 18 17.1 881 18.6 7.6 25.1 7.2 24.5 8.9 11.4
Parcel, U.S.P.S. or courier 3,351 44.2 20 11.5 18 16.9 880 18.7 7.6 25.3 7.2 25.1 8.9 11.4
Truck and rail S S S S S S S S S S S S S S
Truck and water S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 36, Motorized and other vehicles (including parts)

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 6,078 100 563 100 196 100 S 21.3 - 27.7 - 28 - S
Single modes 5,194 85.4 513 91.2 176 89.8 S 21 6.3 27.9 4.7 29.7 6.5 S
Truck6 5,192 85.4 513 91.2 176 89.8 S 21 6.3 27.9 4.7 29.7 6.5 S
For-hire truck 2,624 43.2 254 45.2 151 77.1 S 24.2 8.4 23.2 10.5 27.5 7.7 S
Private truck 2,568 42.2 259 46 S S 58 28.6 7.3 48.5 10.4 S S 49.6
Air (incl truck and air) S S S S S S S S S S S S S S
Multiple modes S S S S S S S S S S S S S S
Parcel, U.S.P.S. or courier S S S S 1 0.7 S S S S S 47.4 10.6 S
Truck and water S S S S S S 1,491 S S S S S S 46.9
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 37, Transportation equipment, nec

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 922 100 50 100 S S 783 35.4 - 38.1 - S S 18.6
Single modes 754 81.8 50 99.6 S S 834 39.6 9.4 36.5 1.1 S S 16.7
Truck6 504 54.7 50 99.1 S S 764 34.6 12.4 36.8 3.1 S S 22.2
For-hire truck 456 49.5 37 74.4 S S 801 40 12 41.4 10.8 S S 19.9
Private truck S S S S S S 13 S S S S S S 23.4
Air (incl truck and air) S S S S S S 1,254 S S S S S S 28
Multiple modes 168 18.2 - 0.4 - 0.3 730 31.8 14.2 22.8 13.4 36.9 13.9 31.7
Parcel, U.S.P.S. or courier 168 18.2 - 0.4 - 0.3 730 31.8 14.2 22.8 13.4 36.9 13.9 31.7
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 38, Precision instruments and apparatus

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 2,669 100 42 100 28 100 986 35.4 - 34.9 - 37 - 10.9
Single modes 1,362 51 29 68 13 48.5 S 49.3 9.3 43 10.7 37.2 9.2 S
Truck6 S S 25 59.2 10 36.5 S S S 49.4 11.2 44.5 11.2 S
For-hire truck S S S S S S 1,074 S S S S S S 20.7
Private truck S S S S S S 110 S S S S S S 32.1
Air (incl truck and air) S S S S S S 797 S S S S S S 45.9
Multiple modes 1,298 48.6 13 31.6 14 50.2 1,087 37.4 9.3 42.5 10.4 47 8.6 6.4
Parcel, U.S.P.S. or courier 1,298 48.6 13 31.6 14 50.2 1,087 37.4 9.3 42.5 10.4 47 8.6 6.4
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 39, Furniture, mattresses & mattress supports, lamps, lighting

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 942 100 84 100 56 100 850 18 - 19.3 - 21.6 - 12.5
Single modes 815 86.5 79 94.2 52 92.5 740 19.2 6.2 21.4 4.4 24.7 8.2 17.2
Truck6 815 86.5 79 94.2 52 92.5 590 19.3 6.2 21.4 4.4 24.7 8.3 14.6
For-hire truck 668 70.9 48 57.3 46 83.2 937 24.4 9.6 32.3 9.6 27.3 9.4 6
Private truck 146 15.5 31 36.9 5 9.3 123 22 6.3 28.7 7.4 28.3 2.2 39.5
Air (incl truck and air) - - - - S S S 39.1 0.3 24 0.1 S S S
Multiple modes 101 10.7 3 3.6 3 5.5 1,086 39 3.7 39.4 2.6 41.8 4.5 15.1
Parcel, U.S.P.S. or courier 99 10.5 3 3.5 3 5.2 1,086 38.1 3.7 39.1 2.5 40.5 4.4 15.1
Truck and water S S S S S S S S S S S S S S
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 40, Miscellaneous manufactured products

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 4,656 100 757 100 290 100 851 25.1 - 35.7 - 20.6 - 11.1
Single modes 3,567 76.6 717 94.7 252 87 502 33 6.6 37.9 4.3 22.5 3.9 21
Truck6 3,444 74 716 94.6 251 86.7 486 33.7 7 37.9 4.5 22.6 4 22.7
For-hire truck 1,378 29.6 281 37.1 198 68.2 948 20.2 9.4 39.9 12.6 30.2 9.2 9.1
Private truck S S S S S S 61 S S S S S S 41.8
Air (incl truck and air) S S S S S S 694 S S S S S S 14
Multiple modes 1,019 21.9 33 4.4 34 11.8 924 20.7 6.2 39.7 4 35 3.8 12
Parcel, U.S.P.S. or courier 1,017 21.8 33 4.4 32 10.9 923 20.8 6.2 40.1 4 37.6 3.8 11.8
Truck and water S S S S S S S S S S S S S S
Other and unknown modes S S 7 0.9 S S S S S 48.8 1.2 S S S

SCTG2 41, Waste and scrap

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S S S S S 235 S S S S S S 28.2
Single modes S S S S S S 234 S S S S S S 28.3
Truck6 S S S S S S 234 S S S S S S 28.6
For-hire truck S S S S S S 240 S S S S S S 37.5
Private truck S S S S S S 218 S S S S S S 26.3
Rail 5 0.2 S S S S S 49.1 5 S S S S S
Multiple modes S S S S S S S S S S S S S S
Truck and rail S S S S S S S S S S S S S S

SCTG2 43, Mixed freight

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes 18,828 100 5,165 100 755 100 364 19.8 - 17.9 - 20.3 - 18.8
Single modes 18,153 96.4 5,130 99.3 721 95.5 165 21.2 3.2 18.1 0.9 22.3 5.5 12.7
Truck6 18,153 96.4 5,130 99.3 721 95.5 165 21.2 3.2 18.1 0.9 22.3 5.5 12.8
For-hire truck 288 1.5 41 0.8 S S S 21.8 1.6 23.9 0.8 S S S
Private truck 17,866 94.9 5,089 98.5 697 92.4 142 21.6 4.3 18.2 1.4 22.2 6.3 12.6
Air (incl truck and air) S S S S S S S S S S S S S S
Multiple modes 654 3.5 33 0.6 34 4.5 864 44.3 4 37.8 1 47.5 6.9 21.8
Parcel, U.S.P.S. or courier 654 3.5 33 0.6 34 4.5 864 44.3 4 37.8 1 47.5 6.9 21.8
Other and unknown modes S S S S S S S S S S S S S S

SCTG2 99, Commodity Unknown

Mode of transportation Value Tons Ton-miles3 Average miles
per shipment
Value Tons Ton-miles Average miles per shipment CV
2007
(million $)
Percent of total 2007
(thousands)
Percent of total 2007
(millions)
Percent of
total
CV4 Standard Error of % CV Standard Error of % CV Standard Error of %
All modes S S S S - 100 S S S S S 22.7 - S
Single modes S S S S S S S S S S S S S S
Truck6 S S S S S S S S S S S S S S
Private truck S S S S S S S S S S S S S S
Multiple modes S S S S - 73.5 445 S S S S 24.7 14.3 42.2
Parcel, U.S.P.S. or courier S S S S - 73.5 445 S S S S 24.7 14.3 42.2
Other and unknown modes S S S S S S S S S S S S S S

KEY: S = Estimate does not meet publication standards because of high sampling variability or poor response quality. - = Zero or Less than half the unit shown; thus, it has been rounded to zero.

1 Commodity Flow Survey (CFS) geographic areas were drawn from a subset of Combined Statistical Areas (CSAs) and Metropolitan Statistical Areas (MeSAs) as defined by the Office of Management and Budget (OMB). However, CFS metropolitan areas are divided into their state parts when they include more than one state. In addition, the CFS also utilizes a unique geography referred to as, "remainder of state," to represent those areas of a state not contained within a separately published metropolitan area for the CFS (as opposed to not part of any Core-Based Statistical Area (CBSA) as defined by OMB). Because of the differences in the CFS geography, as compared to OMB defined geography, caution should be exercised when comparing CFS estimates to other estimates of similar geography.
2 Standard Classification of Transported Goods.
3 Ton-miles estimates are based on estimated distances traveled along a modeled transportation network.
4 Coefficient of Variation.
5 Estimates exclude shipments of crude petroleum (SCTG 16).
6 "Truck" as a single mode includes any shipment that was made by private truck only, by for-hire truck only, or by a combination of private and for-hire truck.
7 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 coefficients of variation (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/.
Rows are not shown if all cells for that particular row have no value. For example, Orlando-Deltona-Daytona Beach, FL by Alcoholic Beverages (08) by Air has no data for any cell therefore the entire row is not shown. Also, two-digit commodities are not present if there is no such data for an entire commodity by area. For example, Pittsburgh-New Castle, PA by Cereal Grains (02) has no data for any mode therefore the entire commodity is not shown.

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.