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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Table 3. Shipment Characteristics by Mode of Transportation and Distance Shipped for State of Origin: 2007

Tuesday, July 3, 2012

Table 3. Shipment Characteristics by Mode of Transportation and Distance Shipped for State of Origin: 2007

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

Excel | CSV

All modes

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 1,341,220 100 900,817 100 180,976 100 1.3 - 6.8 - 3.6 -
Less than 50 miles 567,814 42.3 619,234 68.7 14,949 8.3 2.7 0.9 6.7 1 10.6 0.7
50 - 99 miles 126,924 9.5 97,003 10.8 9,197 5.1 4.9 0.5 20.5 1.2 19.3 0.7
100 - 249 miles 98,901 7.4 73,274 8.1 14,552 8 3.8 0.3 15.1 1 15.9 1.2
250 - 499 miles 114,676 8.6 43,188 4.8 18,092 10 6.1 0.5 6.6 0.4 6.2 0.6
500 - 749 miles 39,210 2.9 12,904 1.4 9,892 5.5 6.4 0.2 11 0.2 11.1 0.6
750 - 999 miles 36,421 2.7 9,761 1.1 11,027 6.1 6.2 0.2 13.5 0.2 13.5 0.7
1,000 - 1,499 miles 69,258 5.2 11,778 1.3 18,910 10.4 5.3 0.2 9.3 0.2 9.9 0.9
1,500 - 2,000 miles 126,560 9.4 15,758 1.7 34,317 19 4.7 0.4 6.9 0.2 7.1 1.3
More than 2,000 miles 161,455 12 17,917 2 50,040 27.7 8.3 1 5.2 0.1 5 1.3

Single modes

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 1,017,796 100 848,278 100 152,625 100 1.5 - 6.9 - 4 -
Less than 50 miles 491,217 48.3 589,768 69.5 14,228 9.3 2.9 0.9 6.8 0.9 11.6 0.9
50 - 99 miles 107,386 10.6 94,996 11.2 8,955 5.9 4.3 0.5 20.9 1.2 19.8 0.8
100 - 249 miles 81,116 8 65,538 7.7 12,739 8.3 3.2 0.3 9.6 0.8 9.3 0.9
250 - 499 miles 80,288 7.9 40,583 4.8 16,853 11 6.4 0.5 7.1 0.4 6.7 0.7
500 - 749 miles 25,698 2.5 11,752 1.4 8,949 5.9 6.7 0.2 11.9 0.2 12.2 0.7
750 - 999 miles 24,849 2.4 8,742 1 9,796 6.4 7.9 0.2 13.2 0.2 13.3 0.7
1,000 - 1,499 miles 41,116 4 10,334 1.2 16,442 10.8 7.2 0.3 10 0.2 10.6 1
1,500 - 2,000 miles 77,438 7.6 13,305 1.6 28,343 18.6 5.9 0.4 7.1 0.2 7.1 1.4
More than 2,000 miles 88,687 8.7 13,260 1.6 36,321 23.8 12 1.1 6.4 0.1 6.6 1.3

Truck3

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 893,972 100 738,550 100 131,440 100 1.4 - 7.5 - 3.9 -
Less than 50 miles 420,694 47.1 503,084 68.1 13,225 10.1 2.1 0.9 7.4 0.8 12 1.1
50 - 99 miles 103,922 11.6 90,390 12.2 8,619 6.6 3.8 0.5 21.1 1.3 20 1
100 - 249 miles 76,912 8.6 59,628 8.1 11,573 8.8 3.5 0.3 9.3 0.7 9.5 1
250 - 499 miles 73,592 8.2 36,008 4.9 14,665 11.2 6.5 0.5 7.6 0.5 7.5 0.6
500 - 749 miles 24,339 2.7 11,005 1.5 8,287 6.3 7.1 0.2 12.2 0.2 12.7 0.7
750 - 999 miles 23,213 2.6 7,654 1 8,409 6.4 8.4 0.2 11.7 0.2 11.6 0.7
1,000 - 1,499 miles 36,730 4.1 8,697 1.2 13,537 10.3 8.5 0.4 8.6 0.1 8.5 0.8
1,500 - 2,000 miles 60,196 6.7 10,626 1.4 22,135 16.8 9.7 0.6 9.1 0.2 8.9 1.6
More than 2,000 miles 74,374 8.3 11,457 1.6 30,991 23.6 13.9 1.2 7 0.1 6.9 1.3

For-hire truck

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 501,681 100 308,940 100 106,747 100 2.9 - 5 - 4 -
Less than 50 miles 138,608 27.6 167,722 54.3 4,869 4.6 5.6 1.3 7.4 1.5 14.2 0.7
50 - 99 miles 47,465 9.5 33,213 10.8 3,286 3.1 7 0.7 9.9 0.8 9.3 0.3
100 - 249 miles 43,206 8.6 33,044 10.7 6,539 6.1 5.1 0.5 10.1 1 9.7 0.7
250 - 499 miles 55,998 11.2 26,938 8.7 11,222 10.5 8.8 0.7 8.4 0.7 8.2 0.7
500 - 749 miles 23,982 4.8 10,626 3.4 7,989 7.5 6.8 0.2 11.3 0.4 11.6 0.7
750 - 999 miles 22,953 4.6 7,500 2.4 8,230 7.7 8 0.3 11.5 0.3 11.3 0.7
1,000 - 1,499 miles 35,672 7.1 8,458 2.7 13,164 12.3 8.4 0.7 8.8 0.2 8.7 0.8
1,500 - 2,000 miles 59,817 11.9 10,548 3.4 21,974 20.6 9.8 1 9.2 0.5 9 1.7
More than 2,000 miles 73,980 14.7 10,892 3.5 29,473 27.6 14 2.1 6.9 0.3 6.9 1.6

Private truck

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 392,291 100 429,610 100 24,693 100 3 - 12.2 - 11.9 -
Less than 50 miles 282,086 71.9 335,362 78.1 8,356 33.8 2.9 1.3 11.3 1 16.7 1.7
50 - 99 miles 56,457 14.4 57,177 13.3 5,333 21.6 6.7 0.7 28.4 1.5 28.1 2.5
100 - 249 miles 33,706 8.6 26,583 6.2 5,033 20.4 6.8 0.5 9.5 0.6 10.6 2.1
250 - 499 miles 17,594 4.5 9,071 2.1 3,443 13.9 10.1 0.3 11.5 0.4 11 2.4
500 - 749 miles 357 0.1 S S S S 40.6 - S S S S
750 - 999 miles S S 155 - 178 0.7 S S 47.7 - 47.8 0.4
1,000 - 1,499 miles 1,057 0.3 240 0.1 373 1.5 31.4 0.1 44.9 - 44.1 0.7
1,500 - 2,000 miles 379 0.1 S S S S 23.9 - S S S S
More than 2,000 miles 394 0.1 565 0.1 1,518 6.1 48.6 - 40.6 0.1 40.5 2.2

Rail

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 15,202 100 22,101 100 16,641 100 35 - 21.1 - 23.6 -
Less than 50 miles S S 7,223 32.7 148 0.9 S S 49.9 8.1 34.5 0.4
50 - 99 miles S S S S S S S S S S S S
100 - 249 miles 1,509 9.9 S S S S 46.8 6 S S S S
250 - 499 miles 1,134 7.5 1,923 8.7 1,127 6.8 47.1 2.6 24.3 5 25.5 5.5
500 - 749 miles 483 3.2 739 3.3 654 3.9 25.7 1.7 20.8 0.7 21.3 0.9
750 - 999 miles 449 3 1,055 4.8 1,356 8.2 23.1 1.8 36 1.7 34.5 2
1,000 - 1,499 miles 1,142 7.5 1,587 7.2 2,837 17 44.6 2.1 44.2 3.2 45.2 3.4
1,500 - 2,000 miles S S 2,322 10.5 5,461 32.8 S S 25.3 4.1 25.5 4.2
More than 2,000 miles 1,584 10.4 1,326 6 4,140 24.9 40.4 2.1 29.8 1.4 30.7 4.2

Water

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 2,787 100 S S 673 100 11.3 - S S 14.2 -
Less than 50 miles 595 21.3 S S S S 31.7 5.6 S S S S
50 - 99 miles S S S S S S S S S S S S
100 - 249 miles - - - - - - - - - - - -
250 - 499 miles 5 0.2 2 - 1 0.2 - - - 0.2 - -
500 - 749 miles - - - - - - - - - - - -
750 - 999 miles - - - - - - - - - - - -
1,000 - 1,499 miles - - - - - - - - - - - -
1,500 - 2,000 miles 2,074 74.4 165 2.6 381 56.6 2.9 7.2 3.1 17.8 2.7 5.9
More than 2,000 miles 62 2.2 71 1.1 180 26.8 36.1 1 15.1 7.7 15 3.8

Shallow draft

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 2,574 100 S S 475 100 11 - S S 19.6 -
Less than 50 miles 499 19.4 S S S S 38.9 5.6 S S S S
50 - 99 miles - - - - - - - - - - - -
100 - 249 miles - - - - - - - - - - - -
250 - 499 miles - - - - - - - - - - - -
500 - 749 miles - - - - - - - - - - - -
750 - 999 miles - - - - - - - - - - - -
1,000 - 1,499 miles - - - - - - - - - - - -
1,500 - 2,000 miles 2,074 80.6 S S 381 80.3 2.9 6.6 S S 2.7 8
More than 2,000 miles - - - - - - - - - - - -

Deep draft

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 214 100 S S 198 100 45.3 - S S 14.6 -
Less than 50 miles S S S S S S S S S S S S
50 - 99 miles S S S S S S S S S S S S
100 - 249 miles - - - - - - - - - - - -
250 - 499 miles 5 2.5 2 0.7 1 0.6 - 6.8 - 2 - 0.4
500 - 749 miles - - - - - - - - - - - -
750 - 999 miles - - - - - - - - - - - -
1,000 - 1,499 miles - - - - - - - - - - - -
1,500 - 2,000 miles - - - - - - - - - - - -
More than 2,000 miles 62 29.1 S S 180 91 36.1 16.6 S S 15 5.3

Air (incl truck and air)

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 48,014 100 906 100 1,543 100 11.4 - 9.2 - 9.8 -
Less than 50 miles 13,877 28.9 64 7.1 44 2.8 27.1 4.7 17.2 2.2 31.2 1.4
50 - 99 miles 509 1.1 5 0.6 4 0.3 39.9 0.8 44.2 0.2 31.3 0.1
100 - 249 miles 1,255 2.6 S S 43 2.8 29.5 0.7 S S 49 1.9
250 - 499 miles 3,402 7.1 122 13.5 S S 14.9 0.9 40.3 5 S S
500 - 749 miles 876 1.8 8 0.9 S S 23.3 0.6 29.6 0.2 S S
750 - 999 miles 1,187 2.5 32 3.6 31 2 9.9 0.4 31.4 1.1 30.6 0.9
1,000 - 1,499 miles 3,228 6.7 26 2.9 40 2.6 23.4 1.4 14.5 0.4 14.7 0.5
1,500 - 2,000 miles 11,024 23 161 17.8 305 19.8 18.6 4 27.3 4.4 25.6 4.7
More than 2,000 miles 12,655 26.4 373 41.2 939 60.9 6.9 2.4 18.5 6.8 18.8 6.2

Pipeline4

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 57,820 100 80,403 100 S S 16.3 - 15.9 - S S
Less than 50 miles 52,371 90.6 73,438 91.3 S S 18 3.5 17.6 3.1 S S
50 - 99 miles 1,798 3.1 2,494 3.1 S S 20.4 2.4 18.4 2.4 S S
100 - 249 miles S S S S S S S S S S S S
250 - 499 miles 2,155 3.7 2,527 3.1 S S 37.8 5 26.8 4.8 S S
500 - 749 miles - - - - - - - - - - - -
750 - 999 miles - - - - - - - - - - - -
1,000 - 1,499 miles S S S S S S S S S S S S
1,500 - 2,000 miles S S S S S S S S S S S S
More than 2,000 miles S S S S S S S S S S S S

Multiple modes

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 294,387 100 27,161 100 23,132 100 4.1 - 34.4 - 7 -
Less than 50 miles 60,399 20.5 S S 381 1.6 11 1.6 S S 47.4 0.7
50 - 99 miles 18,054 6.1 845 3.1 101 0.4 13.2 1 19.8 1.3 23.3 0.1
100 - 249 miles 16,706 5.7 1,135 4.2 325 1.4 9.9 0.7 22.8 2 41.6 0.8
250 - 499 miles 32,486 11 1,685 6.2 849 3.7 13.4 1.1 13.4 1.7 14.3 0.5
500 - 749 miles 12,376 4.2 614 2.3 518 2.2 8.1 0.3 24.4 0.9 22.5 0.4
750 - 999 miles 10,994 3.7 837 3.1 1,021 4.4 7.1 0.2 29.7 1.7 30 1.1
1,000 - 1,499 miles 26,321 8.9 1,199 4.4 2,092 9 8.4 0.5 9.3 1.4 10 1.1
1,500 - 2,000 miles 47,316 16.1 2,208 8.1 5,463 23.6 6.6 0.7 11.6 2.2 11.1 1.5
More than 2,000 miles 69,735 23.7 4,166 15.3 12,381 53.5 6.1 1.3 8.7 3.9 8.3 2.5

Parcel, U.S.P.S. or courier

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 268,455 100 5,213 100 6,030 100 4.3 - 5.9 - 6.3 -
Less than 50 miles 50,885 19 915 17.6 51 0.8 6.3 0.8 5.9 1.2 15.9 0.1
50 - 99 miles 16,993 6.3 359 6.9 34 0.6 12.7 0.9 7.8 0.7 7.7 0.1
100 - 249 miles 15,801 5.9 451 8.6 89 1.5 10.1 0.8 25.2 1.4 21.8 0.2
250 - 499 miles 31,914 11.9 723 13.9 302 5 13.6 1.1 10.9 1 10.9 0.4
500 - 749 miles 12,058 4.5 286 5.5 222 3.7 7.9 0.3 10.5 0.5 9.9 0.3
750 - 999 miles 10,635 4 260 5 288 4.8 7.3 0.2 9.3 0.4 9.1 0.4
1,000 - 1,499 miles 24,230 9 431 8.3 671 11.1 9.1 0.6 9.6 0.8 10 0.9
1,500 - 2,000 miles 42,664 15.9 742 14.2 1,546 25.6 6.4 1 14.4 1.1 14.3 2.3
More than 2,000 miles 63,276 23.6 1,046 20.1 2,828 46.9 7 1.3 7 1.2 7.1 2.1

Truck and rail

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 13,039 100 8,854 100 12,179 100 16.2 - 24.9 - 15 -
Less than 50 miles S S S S S S S S S S S S
50 - 99 miles 181 1.4 218 2.5 35 0.3 38.9 0.8 46.6 1.5 49 0.1
100 - 249 miles 363 2.8 446 5 83 0.7 27.6 0.9 36.5 2.1 36.6 0.3
250 - 499 miles 255 2 540 6.1 293 2.4 31 0.7 39 4.9 36.5 1.9
500 - 749 miles 281 2.2 305 3.5 271 2.2 47.6 0.9 47.5 1.1 42.1 0.6
750 - 999 miles 278 2.1 345 3.9 430 3.5 33.6 0.8 30.1 1.1 29.5 0.6
1,000 - 1,499 miles 2,023 15.5 755 8.5 1,357 11.1 23.8 4.7 13.3 2.1 14 2.1
1,500 - 2,000 miles 3,711 28.5 1,363 15.4 3,289 27 21.8 4 15.1 3.5 14.9 3.1
More than 2,000 miles 4,169 32 2,026 22.9 6,258 51.4 21.3 5.3 21.2 4.8 20.7 4.9

Truck and water

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total S S S S 4,605 100 S S S S 23 -
Less than 50 miles S S S S S S S S S S S S
50 - 99 miles S S 213 2.5 27 0.6 S S 31.3 4.3 28.1 0.3
100 - 249 miles S S S S S S S S S S S S
250 - 499 miles 318 3.2 S S S S 41.8 3.9 S S S S
500 - 749 miles S S 22 0.3 25 0.6 S S 48.9 5.7 48.5 3.2
750 - 999 miles 50 0.5 S S S S 40.5 2 S S S S
1,000 - 1,499 miles S S S S S S S S S S S S
1,500 - 2,000 miles S S 103 1.2 628 13.6 S S 34.9 1.7 39.3 2.9
More than 2,000 miles 1,983 20.2 1,016 11.9 3,085 67 20.5 11 17 14.1 22.9 3.5

Rail and water

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total S S S S 133 100 S S S S 30.6 -
Less than 50 miles S S S S S S S S S S S S
50 - 99 miles S S S S S S S S S S S S
100 - 249 miles - - - - - - - - - - - -
250 - 499 miles - - - - - - - - - - - -
500 - 749 miles - - - - - - - - - - - -
750 - 999 miles - - - - - - - - - - - -
1,000 - 1,499 miles - - - - - - - - - - - -
1,500 - 2,000 miles - - - - - - - - - - - -
More than 2,000 miles S S S S 96 72.4 S S S S 26.8 19.4

Other multiple modes

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total S S S S 185 100 S S S S 43.5 -
Less than 50 miles S S S S S S S S S S S S
50 - 99 miles S S S S S S S S S S S S
100 - 249 miles - - - - - - - - - - - -
250 - 499 miles - - - - - - - - - - - -
500 - 749 miles - - - - - - - - - - - -
750 - 999 miles S S S S S S S S S S S S
1,000 - 1,499 miles S S S S S S S S S S S S
1,500 - 2,000 miles - - - - - - - - - - - -
More than 2,000 miles S S S S S S S S S S S S

Other and unknown modes

Distance Shipped Value Tons Ton-miles1 Value Tons Ton-miles
2007
(million $)		 Percent 2007
(thousands)		 Percent 2007
(millions)		 Percent CV2 Standard
Error of %		 CV Standard
Error of %		 CV Standard
Error of %
Total 29,037 100 25,378 100 5,219 100 9.9 - 31.7 - 28.1 -
Less than 50 miles 16,198 55.8 14,992 59.1 341 6.5 13.8 3.7 31.5 8.2 50 4.5
50 - 99 miles 1,485 5.1 S S S S 22 0.8 S S S S
100 - 249 miles 1,079 3.7 S S S S 24.5 0.8 S S S S
250 - 499 miles 1,902 6.6 920 3.6 390 7.5 19.9 0.9 28.4 1.7 27.2 2.7
500 - 749 miles 1,136 3.9 S S S S 40 1.3 S S S S
750 - 999 miles 578 2 183 0.7 210 4 27.6 0.5 34 0.6 33.4 1.9
1,000 - 1,499 miles 1,821 6.3 245 1 376 7.2 18.2 1.5 25.8 0.7 26.5 2.8
1,500 - 2,000 miles 1,806 6.2 245 1 511 9.8 15 1.5 17.5 0.5 17.3 2.7
More than 2,000 miles 3,033 10.4 491 1.9 1,338 25.6 13.3 1.9 28 1.5 27.6 5.7

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 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 truck and for-hire truck.
4 Estimates for pipeline exclude shipments of crude petroleum.

NOTES: Rows are not shown if all cells for that particular state by mode have no data. For example, since Wyoming by "Water" has no data for any mileage grouping, the entire mode of "Water" for that state was removed from this table. However, if a state by mode has at least one row of data for one of the mileage groupings, then the entire state by mode is shown even though there may be rows absent of data within that mode. For example, West Virginia by "Water" has a few rows absent of data but since the other rows within that mode do have data, that state by mode will be shown in its entirety for all the mileage groupings. Value-of-shipments estimates have not been adjusted for price changes. 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/.

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.