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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 269,932 100 475,520 100 107,733 100 4 - 5.7 - 7.8 -
Less than 50 miles 124,648 46.2 295,168 62.1 5,910 5.5 7.3 3.8 10.1 4 12.9 0.9
50 - 99 miles 26,175 9.7 41,292 8.7 3,687 3.4 19.4 1.5 17.5 2.1 20.6 0.9
100 - 249 miles 36,627 13.6 46,049 9.7 10,172 9.4 15.7 1.7 16.5 1.8 18.7 1.8
250 - 499 miles 27,161 10.1 36,042 7.6 18,236 16.9 9.8 0.7 9.7 0.9 10 2.3
500 - 749 miles 19,961 7.4 22,287 4.7 18,841 17.5 10.6 0.9 14 0.8 12.8 2.4
750 - 999 miles 17,288 6.4 19,261 4.1 22,870 21.2 9.3 0.6 16.5 0.5 16.3 2.6
1,000 - 1,499 miles 13,741 5.1 12,161 2.6 20,953 19.4 23.2 1.2 27 0.7 31.3 4
1,500 - 2,000 miles 4,169 1.5 3,123 0.7 6,670 6.2 11.3 0.2 25.9 0.1 25.2 1.1
More than 2,000 miles 162 0.1 139 - 393 0.4 21.4 - 42.9 - 42.5 0.1

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 233,168 100 428,604 100 86,966 100 3.8 - 6.5 - 9.9 -
Less than 50 miles 119,479 51.2 284,879 66.5 5,674 6.5 8 3.9 10.8 4.1 13.8 1.3
50 - 99 miles 23,716 10.2 39,069 9.1 3,458 4 22 2 18.8 2.6 22.2 1.4
100 - 249 miles 28,897 12.4 35,471 8.3 7,456 8.6 15.1 1.6 13.2 1.5 11.5 1.3
250 - 499 miles 18,791 8.1 21,804 5.1 10,763 12.4 6.8 0.5 10.3 0.5 11.2 1.6
500 - 749 miles 14,796 6.3 16,454 3.8 14,570 16.8 8.9 0.6 6.8 0.4 8.1 1.7
750 - 999 miles 13,306 5.7 17,129 4 20,158 23.2 6.9 0.4 16.4 0.4 16.3 2.5
1,000 - 1,499 miles 10,811 4.6 11,011 2.6 18,828 21.7 27.3 1.3 29.6 0.8 34.9 4.5
1,500 - 2,000 miles 3,249 1.4 2,651 0.6 5,672 6.5 14.6 0.2 30.7 0.2 30 1.3
More than 2,000 miles 122 0.1 137 - 387 0.4 24.4 - 43.7 - 43.3 0.2

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 100,403 100 174,256 100 26,703 100 2.6 - 12 - 14 -
Less than 50 miles 43,004 42.8 117,911 67.7 2,074 7.8 8.9 3.2 16.3 3.9 10.6 1.6
50 - 99 miles 10,950 10.9 18,812 10.8 1,725 6.5 6.9 0.8 15.5 1.4 16.3 1
100 - 249 miles 15,018 15 13,585 7.8 3,066 11.5 8.2 1.2 7.1 1.1 7.6 1.1
250 - 499 miles 12,031 12 10,846 6.2 5,007 18.8 5.3 0.7 10.5 1 10.6 1.6
500 - 749 miles 7,464 7.4 4,773 2.7 3,616 13.5 10.8 0.8 11.4 0.8 10.8 1.8
750 - 999 miles 5,912 5.9 4,303 2.5 4,494 16.8 8.8 0.5 23.7 0.6 22.7 1.2
1,000 - 1,499 miles 4,011 4 2,597 1.5 3,768 14.1 11.9 0.5 20.5 0.4 20.9 1.4
1,500 - 2,000 miles 1,975 2 S S S S 19.2 0.4 S S S S
More than 2,000 miles 38 - 9 - 26 0.1 40.9 - 49 - 48.5 0.1

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 58,254 100 96,310 100 23,180 100 3.8 - 11.2 - 16.4 -
Less than 50 miles 16,553 28.4 54,481 56.6 1,197 5.2 17.3 4.2 19.8 6.3 13.7 1.3
50 - 99 miles 4,351 7.5 11,100 11.5 1,009 4.4 14.4 1 25.3 2.4 27.2 0.9
100 - 249 miles 8,632 14.8 8,726 9.1 2,047 8.8 12.4 1.7 12.3 1.4 12.3 1.3
250 - 499 miles 9,697 16.6 9,099 9.4 4,302 18.6 5.7 1.1 12.9 1.7 12.7 1.7
500 - 749 miles 7,433 12.8 4,702 4.9 3,558 15.3 10.9 1.4 11.9 1.4 11.4 2.4
750 - 999 miles 5,674 9.7 4,201 4.4 4,391 18.9 7.3 0.9 24.5 1.2 23.4 1.2
1,000 - 1,499 miles 3,900 6.7 2,570 2.7 3,725 16.1 11.5 1 20.7 0.7 21 1.6
1,500 - 2,000 miles 1,975 3.4 S S S S 19.2 0.6 S S S S
More than 2,000 miles 38 0.1 9 - 26 0.1 40.9 - 49 - 48.5 0.1

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 42,149 100 77,946 100 3,523 100 7.1 - 17.1 - 8.9 -
Less than 50 miles 26,451 62.8 63,429 81.4 878 24.9 9.1 2.9 21 5.1 14.9 3.2
50 - 99 miles 6,599 15.7 7,712 9.9 716 20.3 13.1 1.9 17.8 3.3 17.5 2.2
100 - 249 miles 6,386 15.2 4,859 6.2 1,020 29 9.4 1.1 6.4 1.5 8 2
250 - 499 miles 2,334 5.5 1,747 2.2 706 20 18.9 0.9 14.1 0.8 14.8 2.6
500 - 749 miles S S S S S S S S S S S S
750 - 999 miles S S 102 0.1 103 2.9 S S 48.4 0.2 49.2 1.8
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 - - - - - - - - - - - -

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 29,502 100 47,597 100 30,047 100 13.4 - 21.1 - 12.1 -
Less than 50 miles 4,249 14.4 S S 153 0.5 47.9 3.3 S S 24.4 0.1
50 - 99 miles 755 2.6 1,010 2.1 104 0.3 21.6 0.5 19.8 0.6 18.8 0.1
100 - 249 miles 3,922 13.3 5,075 10.7 1,080 3.6 20.4 2.3 12.7 1.8 13.1 0.5
250 - 499 miles 5,041 17.1 7,090 14.9 3,546 11.8 7.9 1.6 11.5 2.1 10.3 0.9
500 - 749 miles 4,566 15.5 6,436 13.5 5,405 18 24.1 1.9 17.5 1.5 17.7 2.6
750 - 999 miles 6,152 20.9 7,600 16 8,627 28.7 12.3 2.6 13.3 2.5 13.1 3.5
1,000 - 1,499 miles 3,689 12.5 5,015 10.5 8,039 26.8 16.6 2.5 22.4 2.5 22 3.4
1,500 - 2,000 miles 1,059 3.6 1,227 2.6 2,732 9.1 15.8 0.6 15.2 0.3 17.8 1.3
More than 2,000 miles 69 0.2 127 0.3 361 1.2 34.4 0.3 40.7 0.2 40 0.7

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 38,905 100 103,587 100 25,342 100 12.8 - 10.6 - 28.6 -
Less than 50 miles 25,786 66.3 76,353 73.7 2,339 9.2 15.7 5.8 14.6 4.8 25.9 7.5
50 - 99 miles S S 5,795 5.6 S S S S 41.8 4.1 S S
100 - 249 miles 2,441 6.3 5,994 5.8 1,720 6.8 26.1 1.8 28.5 1.7 27.7 2.3
250 - 499 miles 1,320 3.4 3,302 3.2 1,971 7.8 42.5 2.1 34.5 1.9 36.7 6.1
500 - 749 miles 1,498 3.9 3,624 3.5 4,449 17.6 20.1 1.1 30 1.4 33.2 6.4
750 - 999 miles 1,037 2.7 5,126 4.9 6,954 27.4 26 1.4 32.4 1.7 30.4 8.6
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 - - - - - - - - - - - -

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 32,834 100 90,159 100 17,838 100 16.9 - 13.3 - 17.2 -
Less than 50 miles 23,736 72.3 67,642 75 2,048 11.5 19.4 5.1 17.3 5 32.9 7.3
50 - 99 miles S S 5,539 6.1 S S S S 43.9 4 S S
100 - 249 miles 2,419 7.4 5,588 6.2 1,617 9.1 25.8 1.8 28.4 1.7 26.9 1.9
250 - 499 miles 1,080 3.3 2,712 3 1,656 9.3 38.1 2 31 1.6 39 5
500 - 749 miles 705 2.1 3,183 3.5 4,062 22.8 42.8 1.6 31.5 2.7 34.4 8.1
750 - 999 miles 1,033 3.1 5,123 5.7 6,950 39 26 2.5 32.5 2.3 30.5 7.6
1,000 - 1,499 miles 48 0.1 373 0.4 636 3.6 44 0.1 24.1 0.2 23.9 2.1
1,500 - 2,000 miles - - - - - - - - - - - -
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 S S 13,428 100 S S S S 37.9 - S S
Less than 50 miles 2,050 33.8 8,712 64.9 290 3.9 32.8 13.3 32.4 12 45.6 15.5
50 - 99 miles 60 1 S S S S 14.2 3.6 S S S S
100 - 249 miles S S S S S S S S S S S S
250 - 499 miles S S S S S S S S S S S S
500 - 749 miles 794 13.1 S S S S 17.3 17.6 S S S S
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 S S S S S S S S S S S S
More than 2,000 miles - - - - - - - - - - - -

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 891 100 S S S S 31.6 - S S S S
Less than 50 miles - - - - - - - - - - - -
50 - 99 miles - - - - - - - - - - - -
100 - 249 miles S S S S S S S S S S S S
250 - 499 miles 85 9.6 S S S S 36 5.2 S S S S
500 - 749 miles S S 2 9.2 1 5 S S 39.8 6.7 41.3 5.8
750 - 999 miles 159 17.8 1 6.5 1 4.6 36.1 3.8 32.1 5.1 34.4 5.3
1,000 - 1,499 miles 163 18.2 S S S S 39.4 8.7 S S S S
1,500 - 2,000 miles S S 2 9.2 3 13.1 S S 47.9 4 45.9 6.2
More than 2,000 miles 14 1.6 - 1 1 2 37.8 6.6 45.2 4.5 49.5 8.4

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 63,468 100 103,146 100 S S 10.6 - 9.3 - S S
Less than 50 miles 46,441 73.2 76,597 74.3 S S 17.1 9.9 16.2 9.7 S S
50 - 99 miles 8,137 12.8 13,452 13 S S 23.6 10.6 27.4 12 S S
100 - 249 miles 7,500 11.8 10,817 10.5 S S 35.8 6.7 34.2 6.3 S S
250 - 499 miles 315 0.5 561 0.5 S S 32.7 0.5 34.7 0.5 S S
500 - 749 miles S S S S S S S S S S S S
750 - 999 miles 47 0.1 99 0.1 S S 48.5 0.1 37.3 0.2 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 - - - - - - - - - - - -

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 34,164 100 44,263 100 20,191 100 13.6 - 16.3 - 12.3 -
Less than 50 miles 3,552 10.4 S S S S 37.9 3.3 S S S S
50 - 99 miles 2,370 6.9 2,156 4.9 222 1.1 13.6 2.2 21.1 2.4 23.9 0.6
100 - 249 miles 7,590 22.2 10,504 23.7 2,699 13.4 26.2 4.2 34.9 5.4 42.9 4
250 - 499 miles 8,155 23.9 14,165 32 7,443 36.9 27.9 4 28.6 7.5 27.3 7.7
500 - 749 miles 5,052 14.8 5,784 13.1 4,237 21 34.2 4.6 47.8 6.1 43.1 6.6
750 - 999 miles 3,961 11.6 1,820 4.1 2,421 12 22.1 1.7 22 1.4 22.2 3.3
1,000 - 1,499 miles 2,584 7.6 1,060 2.4 2,004 9.9 19.1 1.1 26.1 1.6 32.8 4.2
1,500 - 2,000 miles 872 2.6 451 1 953 4.7 22.4 0.5 26.1 0.4 24.6 1.5
More than 2,000 miles 27 0.1 1 - 3 - 23.2 - 40.5 - 36 -

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 8,712 100 231 100 126 100 16 - 11.8 - 17.4 -
Less than 50 miles 952 10.9 31 13.5 1 0.7 25.6 2.6 22.4 2.9 16.1 0.2
50 - 99 miles 772 8.9 21 8.9 2 1.5 25.2 4 18.2 2 17.4 0.6
100 - 249 miles 1,996 22.9 57 24.6 13 10.7 41.6 4.6 18.2 3.9 21.3 3.2
250 - 499 miles 1,720 19.7 52 22.5 23 18.5 35.9 3.3 22.5 3.2 22.8 3.6
500 - 749 miles 1,255 14.4 23 9.9 18 14.1 30.7 4.2 19.7 1.7 20 1.7
750 - 999 miles 843 9.7 17 7.5 18 14.6 38.7 2.7 23.9 1.2 23.9 2.1
1,000 - 1,499 miles 899 10.3 21 9.2 30 24 18.3 2.4 31 2.5 32.2 3.4
1,500 - 2,000 miles 249 2.9 8 3.6 18 14.3 35.5 1.6 35.9 1 36.8 3.2
More than 2,000 miles 26 0.3 1 0.3 2 1.6 23.1 0.1 47.6 0.3 47 1.1

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 7,271 100 4,662 100 4,373 100 17 - 13.3 - 11.9 -
Less than 50 miles S S 28 0.6 S S S S 47.9 0.5 S S
50 - 99 miles 910 12.5 707 15.2 58 1.3 42.4 9.3 41.2 6.3 40 0.9
100 - 249 miles 501 6.9 509 10.9 142 3.3 36.1 3.8 28.4 3 31.6 1
250 - 499 miles 507 7 589 12.6 289 6.6 31.7 1.4 18.8 2.6 18.9 1.3
500 - 749 miles 658 9.1 604 13 541 12.4 22.1 1.8 11.4 2.4 12.4 2.7
750 - 999 miles 2,435 33.5 1,019 21.9 1,159 26.5 35.7 6.6 24.6 4.3 22.2 4.1
1,000 - 1,499 miles 1,603 22 768 16.5 1,272 29.1 32.1 4 23 2.9 22 4.2
1,500 - 2,000 miles 621 8.5 438 9.4 910 20.8 34.4 3.4 26.8 2.6 25.2 4.2
More than 2,000 miles - - - - - - - - - - - -

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 7,102 100 13,125 100 3,358 100 23.2 - 32.3 - 29.7 -
Less than 50 miles 2,235 31.5 S S S S 44.6 14.9 S S S S
50 - 99 miles 507 7.1 865 6.6 97 2.9 28.7 13.5 23.8 16.2 21.4 14.4
100 - 249 miles S S S S S S S S S S S S
250 - 499 miles 2,183 30.7 3,516 26.8 2,108 62.8 31.4 9.9 30.4 12.6 30.2 6.6
500 - 749 miles 297 4.2 104 0.8 166 5 47.9 12.3 46.7 0.5 39.5 4.9
750 - 999 miles 50 0.7 213 1.6 308 9.2 39.7 0.6 28 2.2 27.9 15
1,000 - 1,499 miles S S S S S S S S S S S S
1,500 - 2,000 miles 1 - 1 - 4 0.1 46.7 0.1 22.2 0.1 23.9 1.1
More than 2,000 miles 1 - - - 1 - 33.6 - 49.8 - 43.5 -

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 1,564 100 1,579 100 S S 38.7 - 38.1 -
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 S S S S S S S S S S S S
250 - 499 miles S S S S S S S S S S S S
500 - 749 miles S S 288 18.4 S S S S 38.4 18.1 S S
750 - 999 miles S S 118 7.6 173 10.9 S S 16.3 2.2 13.2 3.3
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 - - - - - - - - - - - -

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 10,183 100 24,681 100 10,755 100 23.7 - 22.7 - 20.8 -
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 S S 7,625 30.9 S S S S 44.8 8.6 S S
250 - 499 miles 3,572 35.1 9,454 38.3 4,768 44.3 35.2 11.6 39.7 9.3 36 11.1
500 - 749 miles S S S S 3,123 29 S S S S 48.4 11.1
750 - 999 miles S S 452 1.8 S S S S 18 10.7 S S
1,000 - 1,499 miles - - - - - - - - - - - -
1,500 - 2,000 miles S S S S S S S S S S S S
More than 2,000 miles - - - - - - - - - - - -

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 2,600 100 2,654 100 S S 18 - 29.2 - S S
Less than 50 miles 1,616 62.2 1,967 74.1 27 4.7 19.5 6.1 27.6 6.1 42.1 4.2
50 - 99 miles 89 3.4 66 2.5 7 1.1 35.9 0.8 41.2 0.9 45.2 2.3
100 - 249 miles 139 5.3 74 2.8 17 3 34.1 4.1 32.4 4.4 29.2 6
250 - 499 miles S S 73 2.8 30 5.2 S S 35.9 2.3 38.4 6.2
500 - 749 miles S S S S S S S S S S S S
750 - 999 miles S S S S S S S S S S S S
1,000 - 1,499 miles 345 13.3 S S S S 39.8 7.3 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

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.