Table 4. Shipment Characteristics by Mode of Transportation and Shipment Size for Metropolitan Area of Origin: 2007

Table 4. Shipment Characteristics by Mode of Transportation and Shipment Size 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 Modes

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 239,881 100 121,063 100 29,529 100 383 9.9 - 8.2 - 11.0 - 10.7
Less than 50 lbs 14,633 6.1 276 0.2 100 0.3 463 11.4 1.0 6.8 - 15.1 - 10.6
50 - 99 lbs 4,391 1.8 217 0.2 68 0.2 320 6.9 0.2 8.7 - 22.4 - 14.9
100 - 499 lbs 13,449 5.6 1,379 1.1 314 1.1 245 7.4 0.5 9.1 0.1 13.0 0.1 13.6
500 - 749 lbs 4,048 1.7 680 0.6 122 0.4 182 7.1 0.2 7.7 - 10.3 0.1 16.1
750 - 999 lbs 4,038 1.7 739 0.6 115 0.4 155 12.3 0.3 10.2 0.1 19.7 0.1 16.2
1,000 - 9,999 lbs 73,484 30.6 15,641 12.9 6,324 21.4 341 16.0 3.1 15.7 1.9 31.3 4.3 15.3
10,000 - 49,999 lbs 88,175 36.8 48,190 39.8 13,248 44.9 274 14.7 2.6 9.1 2.2 8.6 4.2 7.3
50,000 - 99,999 lbs 17,614 7.3 30,552 25.2 3,544 12.0 125 13.6 1.3 10.4 2.7 15.1 1.9 11.5
More than 100,000 lbs 20,048 8.4 23,390 19.3 5,693 19.3 248 33.1 2.3 29.4 3.4 27.4 4.0 13.6

Single modes

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 200,327 100 113,203 100 24,038 100 166 10.7 - 8.3 - 9.9 - 11.0
Less than 50 lbs 3,918 2.0 132 0.1 13 0.1 127 15.7 0.3 15.4 - 16.0 - 16.5
50 - 99 lbs 1,628 0.8 129 0.1 13 0.1 96 13.4 0.1 12.0 - 15.1 - 12.9
100 - 499 lbs 9,551 4.8 1,204 1.1 197 0.8 163 8.6 0.4 10.2 0.1 13.3 0.1 11.2
500 - 749 lbs 3,481 1.7 631 0.6 103 0.4 163 9.2 0.2 8.0 - 9.6 0.1 14.9
750 - 999 lbs 3,934 2.0 727 0.6 109 0.5 149 12.4 0.3 10.3 0.1 20.8 0.1 17.7
1,000 - 9,999 lbs 63,958 31.9 14,218 12.6 4,460 18.6 265 15.9 3.2 15.0 1.7 28.0 3.8 15.2
10,000 - 49,999 lbs 81,575 40.7 45,789 40.4 11,554 48.1 250 14.9 2.9 9.5 2.2 8.2 4.1 7.5
50,000 - 99,999 lbs 14,289 7.1 28,709 25.4 2,832 11.8 109 12.7 1.3 9.5 2.7 13.7 2.0 10.9
More than 100,000 lbs 17,992 9.0 21,664 19.1 4,757 19.8 222 30.8 2.5 29.4 3.3 26.3 3.7 12.4

Truck4

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 166,839 100 97,546 100 18,242 100 157 9.9 - 5.5 - 10.0 - 9.4
Less than 50 lbs 3,803 2.3 132 0.1 12 0.1 117 16.4 0.3 15.5 - 18.3 - 15.6
50 - 99 lbs 1,593 1.0 129 0.1 12 0.1 94 13.7 0.1 12.0 - 14.7 - 12.4
100 - 499 lbs 9,294 5.6 1,200 1.2 190 1.0 156 8.9 0.5 10.3 0.1 13.1 0.1 10.0
500 - 749 lbs 3,373 2.0 630 0.6 101 0.6 161 9.2 0.2 8.0 - 10.2 0.1 15.2
750 - 999 lbs 3,922 2.4 726 0.7 108 0.6 148 12.4 0.3 10.3 0.1 21.0 0.1 17.9
1,000 - 9,999 lbs 58,965 35.3 13,743 14.1 3,875 21.2 248 14.0 2.7 15.1 1.5 26.5 3.6 12.9
10,000 - 49,999 lbs 74,656 44.7 44,995 46.1 10,868 59.6 242 11.9 2.2 8.9 2.7 7.2 3.4 8.3
50,000 - 99,999 lbs 10,036 6.0 27,688 28.4 2,212 12.1 87 11.8 0.9 8.4 2.5 10.7 1.4 8.9
More than 100,000 lbs 1,197 0.7 8,303 8.5 862 4.7 92 29.1 0.3 22.6 1.8 39.6 1.3 19.2

For-hire truck

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 90,749 100 50,266 100 14,289 100 505 13.8 - 10.8 - 10.6 - 8.7
Less than 50 lbs 1,189 1.3 14 - 8 0.1 542 22.8 0.2 13.4 - 16.4 - 17.2
50 - 99 lbs 562 0.6 14 - 8 0.1 542 33.7 0.1 11.7 - 20.1 - 12.4
100 - 499 lbs 3,588 4.0 222 0.4 145 1.0 653 11.5 0.4 8.9 0.1 15.1 0.1 8.3
500 - 749 lbs 1,509 1.7 135 0.3 75 0.5 549 12.5 0.2 10.5 0.1 15.2 0.1 10.3
750 - 999 lbs 1,713 1.9 175 0.3 84 0.6 477 9.1 0.3 22.0 0.1 28.8 0.2 9.4
1,000 - 9,999 lbs 30,625 33.7 5,974 11.9 3,071 21.5 523 20.4 4.0 16.4 1.6 26.9 4.0 8.8
10,000 - 49,999 lbs 44,952 49.5 25,907 51.5 9,000 63.0 362 17.1 3.2 11.7 3.1 8.4 3.4 8.4
50,000 - 99,999 lbs 5,758 6.3 14,607 29.1 1,481 10.4 112 15.3 1.2 15.7 3.2 15.9 1.7 12.6
More than 100,000 lbs 854 0.9 3,218 6.4 418 2.9 110 27.2 0.3 15.3 0.8 35.5 0.7 22.2

Private truck

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 76,090 100 47,280 100 3,953 100 52 11.6 - 8.4 - 14.4 - 7.7
Less than 50 lbs 2,614 3.4 117 0.2 5 0.1 42 15.8 0.6 16.4 - 22.9 - 12.1
50 - 99 lbs 1,031 1.4 114 0.2 5 0.1 39 9.5 0.2 13.3 - 17.1 - 14.0
100 - 499 lbs 5,706 7.5 978 2.1 45 1.1 45 11.6 1.3 11.5 0.3 15.7 0.3 9.4
500 - 749 lbs 1,864 2.4 494 1.0 27 0.7 54 10.8 0.4 11.3 0.1 14.6 0.2 12.7
750 - 999 lbs 2,209 2.9 551 1.2 24 0.6 44 25.2 0.4 14.3 0.2 19.6 0.2 12.7
1,000 - 9,999 lbs 28,340 37.2 7,770 16.4 804 20.4 88 15.9 4.0 16.6 2.9 31.8 4.8 10.6
10,000 - 49,999 lbs 29,704 39.0 19,088 40.4 1,868 47.3 95 22.3 5.0 16.1 4.2 13.5 4.9 13.5
50,000 - 99,999 lbs 4,278 5.6 13,081 27.7 731 18.5 60 21.6 1.1 13.9 3.1 15.7 3.0 19.6
More than 100,000 lbs 343 0.5 5,086 10.8 S S 80 41.2 0.3 32.6 3.0 S S 19.9

Rail

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 29,256 100 9,260 100 5,564 100 920 24.4 - 18.1 - 21.8 - 15.7
Less than 50 lbs - - - - - - - - - - - - - -
50 - 99 lbs - - - - - - - - - - - - - -
100 - 499 lbs S S S S S S S S S S S S S S
500 - 749 lbs S S S S S S S S S S S S S S
750 - 999 lbs - - - - - - - - - - - - - -
1,000 - 9,999 lbs S S S S S S 1,249 S S S S S S 28.2
10,000 - 49,999 lbs S S S S S S 845 S S S S S S 18.3
50,000 - 99,999 lbs 4,253 14.5 S S 620 11.1 731 27.4 10.3 S S 26.7 5.1 30.4
More than 100,000 lbs 13,336 45.6 6,983 75.4 3,683 66.2 468 40.0 10.6 23.5 7.1 29.8 9.2 21.1

Water

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total S S S S S S 9 S S S S S S -
Less than 50 lbs - - - - - - - - - - - - - -
50 - 99 lbs - - - - - - - - - - - - - -
100 - 499 lbs - - - - - - - - - - - - - -
500 - 749 lbs - - - - - - - - - - - - - -
750 - 999 lbs - - - - - - - - - - - - - -
1,000 - 9,999 lbs - - - - - - - - - - - - - -
10,000 - 49,999 lbs - - - - - - - - - - - - - -
50,000 - 99,999 lbs - - - - - - - - - - - - - -
More than 100,000 lbs S S S S S S 9 S S S S S S -

Great Lakes

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total S S S S S S 9 S S S S S S -
Less than 50 lbs - - - - - - - - - - - - - -
50 - 99 lbs - - - - - - - - - - - - - -
100 - 499 lbs - - - - - - - - - - - - - -
500 - 749 lbs - - - - - - - - - - - - - -
750 - 999 lbs - - - - - - - - - - - - - -
1,000 - 9,999 lbs - - - - - - - - - - - - - -
10,000 - 49,999 lbs - - - - - - - - - - - - - -
50,000 - 99,999 lbs - - - - - - - - - - - - - -
More than 100,000 lbs S S S S S S 9 S S S S S S -

Air (incl truck and air)

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 773 100 20 100 20 100 1,052 43.8 - 40.5 - 40.5 - 8.4
Less than 50 lbs 115 14.9 - 2.4 - 2.0 966 46.0 8.6 31.8 8.8 29.2 9.9 8.1
50 - 99 lbs 35 4.5 - 1.9 - 1.6 914 36.7 2.6 45.1 4.9 43.2 2.9 26.7
100 - 499 lbs 257 33.3 5 23.8 S S 1,438 49.1 10.3 47.6 13.1 S S 10.4
500 - 749 lbs S S S S S S 1,395 S S S S S S 22.9
750 - 999 lbs 12 1.6 - 2.3 S S 1,601 50.0 6.7 45.6 12.6 S S 23.2
1,000 - 9,999 lbs S S 7 34.4 S S 831 S S 39.8 14.1 S S 15.7
10,000 - 49,999 lbs S S S S S S S S S S S S S S
50,000 - 99,999 lbs - - - - - - - - - - - - - -
More than 100,000 lbs - - - - - - - - - - - - - -

Pipeline5

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total S S S S S S S S S S S S S S
Less than 50 lbs - - - - - - - - - - - - - -
50 - 99 lbs - - - - - - - - - - - - - -
100 - 499 lbs - - - - - - - - - - - - - -
500 - 749 lbs - - - - - - - - - - - - - -
750 - 999 lbs - - - - - - - - - - - - - -
1,000 - 9,999 lbs - - - - - - - - - - - - - -
10,000 - 49,999 lbs - - - - - - - - - - - - - -
50,000 - 99,999 lbs - - - - - - - - - - - - - -
More than 100,000 lbs S S S S S S S S S S S S S S

Multiple modes

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 36,455 100 5,532 100 4,327 100 721 11.0 - 25.2 - 20.2 - 7.4
Less than 50 lbs 10,367 28.4 132 2.4 87 2.0 701 15.2 4.5 11.1 0.7 17.4 0.5 7.5
50 - 99 lbs 2,603 7.1 78 1.4 55 1.3 717 13.7 0.9 18.4 0.4 27.0 0.3 12.3
100 - 499 lbs 3,394 9.3 139 2.5 115 2.7 820 21.6 1.8 21.7 0.8 31.5 0.9 10.6
500 - 749 lbs 304 0.8 30 0.5 18 0.4 642 21.4 0.4 24.0 0.2 38.3 0.2 19.1
750 - 999 lbs 40 0.1 8 0.1 5 0.1 S 26.7 - 42.3 0.1 24.1 0.1 S
1,000 - 9,999 lbs 8,328 22.8 948 17.1 1,683 38.9 1,845 26.9 4.9 39.3 7.5 46.1 9.1 13.1
10,000 - 49,999 lbs 6,169 16.9 1,560 28.2 1,282 29.6 933 20.6 2.6 33.0 5.2 22.4 5.7 19.3
50,000 - 99,999 lbs 3,257 8.9 1,161 21.0 385 8.9 S 24.9 2.2 49.5 5.4 21.8 3.7 S
More than 100,000 lbs S S 1,477 26.7 696 16.1 426 S S 28.2 7.0 45.7 7.2 33.6

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

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 16,692 100 385 100 277 100 707 12.5 - 15.2 - 23.3 - 7.6
Less than 50 lbs 10,365 62.1 132 34.2 87 31.3 701 15.2 4.1 11.1 1.5 17.5 2.4 7.5
50 - 99 lbs 2,602 15.6 78 20.3 55 19.9 717 13.7 1.3 18.4 1.6 27.0 2.6 12.3
100 - 499 lbs 3,384 20.3 137 35.7 112 40.4 810 21.7 3.3 22.0 2.2 32.5 4.1 10.8
500 - 749 lbs 303 1.8 30 7.8 18 6.6 644 21.6 0.7 23.9 3.1 38.4 3.2 19.1
750 - 999 lbs 38 0.2 8 2.0 5 1.7 624 28.1 - 43.5 0.6 24.1 0.8 49.6
1,000 - 9,999 lbs - - - - - - - - - - - - - -
10,000 - 49,999 lbs - - - - - - - - - - - - - -
50,000 - 99,999 lbs - - - - - - - - - - - - - -
More than 100,000 lbs - - - - - - - - - - - - - -

Truck and rail

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 19,529 100 5,093 100 3,829 100 1,496 19.5 - 26.5 - 21.0 - 11.2
Less than 50 lbs S S S S S S 1,675 S S S S S S 28.8
50 - 99 lbs S S S S S S S S S S S S S S
100 - 499 lbs S S S S S S 1,929 S S S S S S 30.7
500 - 749 lbs S S - - - - 146 S S 25.5 - 29.2 - 17.5
750 - 999 lbs S S - - S S S S S 5.1 - S S S
1,000 - 9,999 lbs 8,228 42.1 937 18.4 1,628 42.5 1,811 27.1 8.4 39.8 8.3 47.5 10.0 13.0
10,000 - 49,999 lbs 6,059 31.0 1,532 30.1 1,161 30.3 828 20.9 4.3 33.2 6.5 24.8 7.0 14.5
50,000 - 99,999 lbs 3,238 16.6 1,157 22.7 366 9.5 S 25.1 7.9 49.7 5.8 23.4 4.4 S
More than 100,000 lbs S S 1,465 28.8 672 17.5 415 S S 28.4 7.4 46.0 7.4 33.2

Truck and water

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 145 100 33 100 108 100 3,852 38.4 - 35.0 - 33.2 - 27.2
Less than 50 lbs - - - - - - - - - - - - - -
50 - 99 lbs S S S S S S S S S S S S S S
100 - 499 lbs S S S S S S 8,008 S S S S S S 19.1
500 - 749 lbs - - - - - - - - - - - - - -
750 - 999 lbs S S S S S S S S S S S S S S
1,000 - 9,999 lbs S S S S S S S S S S S S S S
10,000 - 49,999 lbs 74 50.9 S S 49 45.1 5,529 35.6 17.2 S S 39.6 16.5 25.9
50,000 - 99,999 lbs S S S S S S S S S S S S S S
More than 100,000 lbs S S S S S S S S S S S S S S

Rail and water

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 79 100 12 100 90 100 8,127 31.4 - 29.9 - 13.0 - 17.6
Less than 50 lbs - - - - - - - - - - - - - -
50 - 99 lbs - - - - - - - - - - - - - -
100 - 499 lbs - - - - - - - - - - - - - -
500 - 749 lbs - - - - - - - - - - - - - -
750 - 999 lbs - - - - - - - - - - - - - -
1,000 - 9,999 lbs S S S S S S S S S S S S S S
10,000 - 49,999 lbs S S S S S S S S S S S S S S
50,000 - 99,999 lbs - - - - - - - - - - - - - -
More than 100,000 lbs - - - - - - - - - - - - - -

Other multiple modes

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total S S S S S S S S S S S S S S
Less than 50 lbs - - - - - - - - - - - - - -
50 - 99 lbs - - - - - - - - - - - - - -
100 - 499 lbs - - - - - - - - - - - - - -
500 - 749 lbs S S S S S S S S S S S S S S
750 - 999 lbs - - - - - - - - - - - - - -
1,000 - 9,999 lbs - - - - - - - - - - - - - -
10,000 - 49,999 lbs S S S S S S S S S S S S S S
50,000 - 99,999 lbs - - - - - - - - - - - - - -
More than 100,000 lbs - - - - - - - - - - - - - -

Other and unknown modes

Shipment Weight Value Tons Ton-miles2 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
CV3 Standard Error of % CV Standard Error of % CV Standard Error of %
Total 3,099 100 2,328 100 1,164 100 S 16.2 - 34.5 - 49.2 - S
Less than 50 lbs 348 11.2 12 0.5 1 - 40 39.6 5.4 33.2 0.8 42.3 0.5 30.7
50 - 99 lbs 160 5.2 10 0.4 - - S 40.6 1.5 31.8 1.1 32.1 0.6 S
100 - 499 lbs 504 16.3 36 1.5 1 0.1 S 36.4 6.3 35.5 2.2 35.8 1.6 S
500 - 749 lbs S S S S 1 0.1 40 S S S S 45.6 0.3 41.6
750 - 999 lbs S S S S S S 129 S S S S S S 38.0
1,000 - 9,999 lbs 1,198 38.7 475 20.4 S S 384 31.7 8.9 39.6 9.4 S S 21.5
10,000 - 49,999 lbs S S 841 36.1 412 35.4 497 S S 47.3 7.8 46.7 11.8 20.8
50,000 - 99,999 lbs 69 2.2 S S S S 398 38.2 2.5 S S S S 40.8
More than 100,000 lbs 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 Ton-miles estimates are based on estimated distances traveled along a modeled transportation network.
3 Coefficient of Variation.
4 ""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.
5 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 mode have no data. For example, since Denver-Aurora-Boulder by "Water" has no data for any shipment weight group, the entire mode of "Water" for that area was removed from this table. However, if a mode has at least one row of data for one of the shipment weight groups, then the entire mode is shown even though there may be rows absent of data within that mode. For example, Denver-Aurora-Boulder by "Other and unknown modes" has a row absent of data for the shipment size of "More than 100,000 lbs" but does have data for the other shipment weight groups under that mode so it will be shown in its entirety.

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.