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 50,804 100 85,701 100 25,047 100 731 9.4 - 14.5 - 14.2 - 16.3
Less than 50 lbs 5,564 11.0 120 0.1 77 0.3 993 23.1 2.0 20.3 - 16.7 0.1 18.8
50 - 99 lbs 1,430 2.8 89 0.1 38 0.2 411 29.2 0.6 26.1 - 30.4 - 15.1
100 - 499 lbs 3,638 7.2 412 0.5 118 0.5 317 18.7 1.5 16.7 0.1 17.2 0.1 13.1
500 - 749 lbs 1,019 2.0 196 0.2 46 0.2 237 14.2 0.4 14.2 - 14.8 0.1 21.0
750 - 999 lbs 968 1.9 185 0.2 38 0.2 203 26.3 0.6 13.5 - 10.8 - 19.2
1,000 - 9,999 lbs 8,654 17.0 3,685 4.3 894 3.6 232 12.6 1.1 13.9 0.6 7.8 0.5 13.9
10,000 - 49,999 lbs 20,793 40.9 38,264 44.6 9,792 39.1 234 14.2 2.8 17.8 3.6 14.5 4.3 19.6
50,000 - 99,999 lbs 5,532 10.9 28,446 33.2 3,390 13.5 116 16.5 1.8 21.6 3.7 14.8 2.0 15.5
More than 100,000 lbs 3,206 6.3 14,305 16.7 10,654 42.5 1,230 16.4 0.9 23.3 4.0 25.5 4.6 10.4

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 41,601 100 82,656 100 20,788 100 161 9.8 - 14.5 - 12.0 - 15.5
Less than 50 lbs S S 62 0.1 5 - 96 S S 43.2 - 20.3 - 35.4
50 - 99 lbs 590 1.4 59 0.1 S S 209 25.5 0.4 30.4 - S S 24.8
100 - 499 lbs 2,803 6.7 361 0.4 70 0.3 193 21.5 2.0 17.3 0.1 15.2 0.1 21.2
500 - 749 lbs 883 2.1 183 0.2 35 0.2 194 17.2 0.4 15.1 - 20.5 0.1 26.0
750 - 999 lbs 925 2.2 162 0.2 36 0.2 218 27.7 0.7 16.3 - 11.1 - 17.0
1,000 - 9,999 lbs 7,846 18.9 3,590 4.3 846 4.1 224 11.4 1.0 13.8 0.6 8.0 0.5 13.6
10,000 - 49,999 lbs 19,421 46.7 37,784 45.7 9,131 43.9 221 14.0 3.1 18.1 3.8 14.1 4.1 19.3
50,000 - 99,999 lbs 4,731 11.4 28,121 34.0 2,830 13.6 99 18.5 1.9 21.6 3.7 11.7 1.5 17.7
More than 100,000 lbs 2,374 5.7 12,334 14.9 7,823 37.6 1,128 13.1 0.8 26.6 4.1 21.1 3.9 11.6

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 37,686 100 77,281 100 13,106 100 150 11.6 - 15.0 - 11.8 - 17.2
Less than 50 lbs S S 62 0.1 4 - 83 S S 43.2 - 20.8 - 43.4
50 - 99 lbs 512 1.4 59 0.1 S S 203 27.2 0.3 30.6 - S S 25.3
100 - 499 lbs 2,113 5.6 360 0.5 68 0.5 189 20.8 0.8 17.4 0.1 16.3 0.1 21.6
500 - 749 lbs 750 2.0 183 0.2 35 0.3 194 14.4 0.2 15.1 - 20.5 0.1 26.0
750 - 999 lbs 742 2.0 162 0.2 35 0.3 217 21.1 0.3 16.3 - 11.2 0.1 17.0
1,000 - 9,999 lbs 7,164 19.0 3,582 4.6 841 6.4 223 9.8 1.2 13.8 0.6 7.9 0.7 13.6
10,000 - 49,999 lbs 19,301 51.2 37,628 48.7 8,967 68.4 218 14.1 2.8 18.2 4.1 14.3 2.3 19.6
50,000 - 99,999 lbs 4,566 12.1 27,855 36.0 2,558 19.5 92 19.0 2.0 21.8 3.9 13.7 2.7 17.4
More than 100,000 lbs 528 1.4 7,390 9.6 585 4.5 247 31.3 0.3 48.0 4.7 36.4 1.1 42.4

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 21,349 100 32,661 100 11,270 100 661 13.6 - 19.6 - 13.2 - 12.1
Less than 50 lbs S S 4 - 2 - 704 S S 33.6 - 29.0 - 32.7
50 - 99 lbs S S S S S S 737 S S S S S S 26.0
100 - 499 lbs 853 4.0 55 0.2 52 0.5 909 28.2 0.9 25.9 0.1 21.0 0.1 10.1
500 - 749 lbs 281 1.3 24 0.1 27 0.2 1,145 28.3 0.4 20.9 - 23.2 0.1 10.0
750 - 999 lbs 353 1.7 25 0.1 28 0.2 1,133 18.5 0.6 14.9 - 13.8 0.1 10.6
1,000 - 9,999 lbs 3,372 15.8 837 2.6 671 6.0 833 11.9 3.0 11.6 0.5 6.5 0.9 7.1
10,000 - 49,999 lbs 13,029 61.0 15,672 48.0 8,140 72.2 511 19.1 4.5 26.3 5.0 15.2 2.4 23.8
50,000 - 99,999 lbs 2,641 12.4 10,278 31.5 1,808 16.0 175 17.4 2.3 18.9 4.9 17.7 2.7 13.7
More than 100,000 lbs 409 1.9 S S 532 4.7 525 34.3 0.5 S S 39.0 1.2 26.9

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 16,337 100 44,620 100 1,836 100 45 12.4 - 21.7 - 11.8 - 6.3
Less than 50 lbs S S 59 0.1 2 0.1 37 S S 46.5 0.1 42.9 0.1 9.7
50 - 99 lbs 284 1.7 46 0.1 2 0.1 49 16.4 0.4 36.5 - 42.5 - 6.4
100 - 499 lbs 1,259 7.7 305 0.7 16 0.9 54 21.7 1.3 21.1 0.2 22.2 0.2 9.8
500 - 749 lbs 469 2.9 159 0.4 9 0.5 54 22.6 0.6 16.6 0.1 19.2 0.1 20.9
750 - 999 lbs 389 2.4 137 0.3 7 0.4 53 33.2 0.6 19.4 0.1 24.9 0.1 11.5
1,000 - 9,999 lbs 3,791 23.2 2,746 6.2 170 9.3 61 16.6 2.9 16.4 1.7 16.8 1.5 6.8
10,000 - 49,999 lbs 6,272 38.4 21,955 49.2 827 45.0 37 17.2 4.5 16.4 4.0 9.5 4.0 14.4
50,000 - 99,999 lbs 1,925 11.8 17,577 39.4 750 40.8 42 37.5 3.2 32.1 4.4 17.9 4.6 29.4
More than 100,000 lbs 119 0.7 S S S S 29 28.2 0.4 S S S S 27.2

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 2,086 100 5,189 100 7,544 100 1,378 16.1 - 17.3 - 21.9 - 9.9
Less than 50 lbs - - - - - - - - - - - - - -
50 - 99 lbs - - - - - - - - - - - - - -
100 - 499 lbs - - - - - - - - - - - - - -
500 - 749 lbs - - - - - - - - - - - - - -
750 - 999 lbs - - - - - - - - - - - - - -
1,000 - 9,999 lbs 4 0.2 7 0.1 5 0.1 S 29.6 0.2 42.8 0.1 35.0 0.1 S
10,000 - 49,999 lbs 109 5.2 141 2.7 163 2.2 1,103 22.0 1.6 24.6 1.0 31.3 1.1 29.8
50,000 - 99,999 lbs 152 7.3 228 4.4 256 3.4 1,060 27.9 2.1 31.8 1.5 24.4 1.5 29.3
More than 100,000 lbs 1,821 87.3 4,813 92.8 7,121 94.4 1,482 16.7 2.8 18.1 2.2 22.9 1.9 7.1

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 27 100 138 100 133 100 1,298 17.6 - 11.5 - 14.1 - 20.3
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 S S S S S S S S S S S S S S
50,000 - 99,999 lbs S S S S S S S S S S S S S S
More than 100,000 lbs 25 94.0 131 94.9 117 88.1 712 12.6 5.2 7.5 4.6 5.5 10.6 24.9

Shallow draft

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 S S S S S S S S S S S S S S
50,000 - 99,999 lbs - - - - - - - - - - - - - -
More than 100,000 lbs S S S S S S S S S S S S S S

Deep draft

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 26 100 131 100 132 100 1,731 14.3 - 7.7 - 13.5 - 34.2
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 S S S S S S S S S S S S S S
More than 100,000 lbs 24 94.9 125 95.2 116 88.1 933 8.2 4.5 5.9 4.5 5.5 10.7 -

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 1,785 100 2 100 4 100 2,283 46.5 - 22.7 - 27.4 - 12.5
Less than 50 lbs 17 1.0 - 3.9 - 5.4 2,435 38.6 8.4 18.2 1.5 24.3 3.4 14.2
50 - 99 lbs S S - 7.0 - 10.2 2,393 S S 27.9 15.9 29.9 17.1 9.3
100 - 499 lbs S S 1 53.6 2 55.2 1,664 S S 30.1 10.4 37.2 9.1 14.0
500 - 749 lbs S S S S S S S S S S S S S S
750 - 999 lbs S S - 5.7 - 4.8 1,400 S S 45.6 6.8 23.2 9.2 40.3
1,000 - 9,999 lbs S S S S S S 954 S S S S S S 40.4
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 17 100 46 100 S S S 25.2 - 21.0 - 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 5 31.3 15 33.0 S S S 0.1 14.5 11.0 15.5 S S S
50,000 - 99,999 lbs 12 68.7 31 67.0 S S S 25.3 15.3 21.5 16.2 S S S
More than 100,000 lbs - - - - - - - - - - - - - -

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 6,757 100 2,285 100 4,091 100 1,784 10.4 - 30.5 - 27.9 - 5.9
Less than 50 lbs 3,244 48.0 44 1.9 72 1.8 1,819 14.6 6.9 14.9 1.4 18.7 1.5 6.2
50 - 99 lbs 783 11.6 20 0.9 26 0.6 1,252 37.0 2.7 30.2 0.6 31.5 0.2 12.2
100 - 499 lbs 739 10.9 33 1.4 47 1.2 1,502 20.3 1.8 26.3 0.5 40.0 0.3 11.7
500 - 749 lbs 122 1.8 6 0.3 10 0.2 1,590 31.6 0.7 26.5 0.3 37.3 0.4 19.1
750 - 999 lbs S S 1 0.1 2 - S S S 29.5 0.1 40.1 0.1 S
1,000 - 9,999 lbs 59 0.9 10 0.4 23 0.6 2,504 47.2 0.6 33.3 0.3 39.0 0.4 27.9
10,000 - 49,999 lbs 1,013 15.0 235 10.3 607 14.8 2,554 39.0 3.7 23.7 4.8 27.4 5.4 9.8
50,000 - 99,999 lbs 122 1.8 236 10.3 S S 1,948 31.2 0.8 46.3 7.5 S S 14.4
More than 100,000 lbs 646 9.6 1,699 74.4 2,826 69.1 1,705 30.9 3.7 40.9 8.6 38.4 8.4 11.2

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 4,907 100 104 100 156 100 1,783 11.7 - 16.1 - 19.1 - 5.9
Less than 50 lbs 3,240 66.0 44 42.5 72 46.0 1,818 14.6 5.5 14.9 5.6 18.7 6.5 6.2
50 - 99 lbs 783 16.0 20 18.9 26 16.4 1,252 37.0 3.9 30.2 2.8 31.5 2.6 12.2
100 - 499 lbs 734 15.0 33 31.5 47 30.0 1,501 20.2 2.4 26.5 3.4 40.4 4.4 11.7
500 - 749 lbs 122 2.5 6 6.0 10 6.5 1,592 31.6 1.0 26.6 1.3 37.4 1.7 19.1
750 - 999 lbs S S 1 1.2 2 1.1 1,376 S S 23.4 1.6 46.9 1.2 23.3
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 1,021 100 1,928 100 3,351 100 1,933 24.9 - 36.7 - 34.4 - 10.3
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 - - - - - - - - - - - - - -
750 - 999 lbs - - - - - - - - - - - - - -
1,000 - 9,999 lbs S S 3 0.2 S S 1,760 S S 42.7 0.3 S S 31.9
10,000 - 49,999 lbs 332 32.5 182 9.4 443 13.2 2,379 40.3 7.9 30.4 5.3 35.8 5.6 10.9
50,000 - 99,999 lbs 44 4.3 66 3.4 144 4.3 2,201 31.1 1.8 35.6 3.1 38.0 3.7 16.1
More than 100,000 lbs 629 61.6 1,677 87.0 2,759 82.3 1,688 32.0 7.6 41.5 5.7 39.6 6.0 10.2

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 814 100 S S S S 2,389 46.4 - S S S S 12.9
Less than 50 lbs S S S S S S S S S S S S S S
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 S S S S S S 3,683 S S S S S S 40.1
1,000 - 9,999 lbs 43 5.2 7 2.9 18 3.3 2,653 49.7 4.2 42.2 7.7 45.2 5.3 40.9
10,000 - 49,999 lbs S S 53 22.3 164 31.2 3,082 S S 34.9 16.0 38.4 16.8 12.0
50,000 - 99,999 lbs S S S S S S 1,861 S S S S S S 20.4
More than 100,000 lbs S S S S S S 836 S S S S S S 47.3

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 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

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 2,446 100 761 100 S S S 28.4 - 24.6 - S S S
Less than 50 lbs 292 11.9 14 1.8 1 0.4 S 27.5 7.7 46.1 4.8 44.1 1.9 S
50 - 99 lbs 58 2.4 S S - 0.1 S 39.3 2.0 S S 32.7 0.6 S
100 - 499 lbs 96 3.9 17 2.3 1 0.5 S 22.0 2.2 28.1 1.8 34.8 4.2 S
500 - 749 lbs 13 0.5 6 0.8 - 0.3 S 31.9 0.3 30.9 0.6 37.9 1.6 S
750 - 999 lbs 14 0.6 S S S S S 27.3 0.4 S S S S S
1,000 - 9,999 lbs 749 30.6 85 11.2 25 15.1 S 40.2 8.1 29.6 6.1 29.1 11.1 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 S S 89 11.7 S S 920 S S 34.5 8.4 S S 36.6
More than 100,000 lbs 186 7.6 S S 5 3.1 S 6.0 16.5 S S 33.6 12.1 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.