Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for State of Origin: 2002

Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for State of Origin: 2002

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

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All modes

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 8.5 5.1 6.6 8.0
Less than 50 lbs 10.5 1.3 10.7 12.0 8.1
50 to 99 lbs 15.2 0.4 20.1 19.0 11.6
100 to 499 lbs 13.8 1.0 11.0 20.0 0.2 20.8
500 to 749 lbs 12.6 0.2 14.8 33.4 0.2 21.0
750 to 999 lbs 9.8 0.2 11.9 11.5 10.1
1,000 to 9,999 lbs 12.0 1.8 7.2 0.5 9.3 0.9 11.4
10,000 to 49,999 lbs 13.4 3.1 11.3 3.7 5.7 1.8 10.9
50,000 to 99,999 lbs 10.0 0.5 14.3 2.9 18.7 1.5 11.7
100,000 lbs or more 24.2 0.6 13.6 3.8 12.3 3.1 20.3

Single modes

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 9.9 4.7 5.8 12.5
Less than 50 lbs 13.9 0.5 16.4 14.6 20.3
50 to 99 lbs 13.5 0.2 25.9 32.6 12.4
100 to 499 lbs 9.8 0.4 12.2 24.3 0.2 24.5
500 to 749 lbs 14.4 0.3 15.8 35.1 0.2 21.1
750 to 999 lbs 10.9 0.2 12.4 10.4 10.4
1,000 to 9,999 lbs 12.4 1.8 7.5 0.5 9.3 0.9 11.8
10,000 to 49,999 lbs 13.7 2.6 10.9 3.7 5.4 1.8 10.6
50,000 to 99,999 lbs 9.6 0.7 14.2 2.9 18.7 1.5 12.0
100,000 lbs or more 16.8 0.5 14.0 3.8 11.4 2.9 14.2

Truck

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 10.5 5.0 5.9 14.6
Less than 50 lbs 10.4 0.3 16.5 14.6 32.9
50 to 99 lbs 17.2 0.2 26.4 36.5 12.5
100 to 499 lbs 10.7 0.4 12.3 25.4 0.3 25.5
500 to 749 lbs 16.3 0.3 15.9 35.5 0.3 21.2
750 to 999 lbs 13.4 0.2 12.5 10.4 9.9
1,000 to 9,999 lbs 12.6 1.9 7.5 0.6 9.3 1.1 11.9
10,000 to 49,999 lbs 13.7 2.6 10.8 4.9 5.1 3.6 10.9
50,000 to 99,999 lbs 10.1 0.8 14.2 3.3 18.9 2.6 12.2
100,000 lbs or more 34.7 0.4 36.0 4.2 S S 37.1

For-hire truck

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 9.3 8.4 8.2 14.7
Less than 50 lbs 23.5 0.2 15.2 20.6 16.0
50 to 99 lbs 25.0 0.1 14.9 38.9 19.8
100 to 499 lbs 16.9 0.5 12.7 34.2 0.4 12.3
500 to 749 lbs 21.5 0.3 19.5 44.7 0.4 14.6
750 to 999 lbs 16.1 0.3 18.2 14.2 8.9
1,000 to 9,999 lbs 16.4 2.4 8.0 0.3 12.7 1.4 12.2
10,000 to 49,999 lbs 14.1 3.7 15.0 5.0 6.1 3.9 12.1
50,000 to 99,999 lbs 11.5 0.8 16.7 3.7 25.1 2.8 16.0
100,000 lbs or more 45.4 1.3 33.3 4.6 S S 39.1

Private truck

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 19.3 7.9 13.1 8.1
Less than 50 lbs 13.0 0.7 17.9 15.8 15.5
50 to 99 lbs 19.4 0.4 28.3 35.9 11.0
100 to 499 lbs 11.9 0.9 16.1 0.1 15.7 0.1 7.2
500 to 749 lbs 17.5 0.6 18.1 0.1 23.6 0.1 9.2
750 to 999 lbs 16.6 0.3 14.8 16.0 9.6
1,000 to 9,999 lbs 9.2 2.6 9.9 1.3 9.6 1.9 7.9
10,000 to 49,999 lbs 31.0 5.0 14.2 5.1 16.9 4.2 11.3
50,000 to 99,999 lbs 14.4 1.5 17.4 3.4 18.6 3.1 9.8
100,000 lbs or more 30.2 0.5 43.1 4.0 27.3 0.7 S

Rail

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 13.7 12.6 11.0 8.2
Less than 50 lbs
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs 26.8 3.8 31.5 0.4 25.4 0.4 29.7
50,000 to 99,999 lbs 49.2 3.8 44.4 0.3 35.7 0.2 25.3
100,000 lbs or more 15.4 3.4 12.8 0.4 11.0 0.5 8.5

Water

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes S S 46.6 45.7 22.3
Less than 50 lbs
50 to 99 lbs
100 to 499 lbs
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 31.6
10,000 to 49,999 lbs S S S S S S 29.8
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more S S S S 49.9 10.0 24.6

Shallow draft

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes S S 49.7 48.1 22.4
Less than 50 lbs
50 to 99 lbs
100 to 499 lbs
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs
10,000 to 49,999 lbs S S S S S S 29.8
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more S S S S S S 24.8

Great Lakes

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes
Less than 50 lbs
50 to 99 lbs
100 to 499 lbs
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more

Deep draft

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes S S S S S S 31.1
Less than 50 lbs
50 to 99 lbs
100 to 499 lbs
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 31.6
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 31.6

Air (including truck and air)

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 16.3 12.0 16.7 7.2
Less than 50 lbs 34.4 9.2 26.1 3.9 22.6 5.8 8.1
50 to 99 lbs 35.2 4.3 31.7 2.7 26.0 1.6 32.7
100 to 499 lbs 33.1 6.3 19.2 3.7 25.2 3.1 14.9
500 to 749 lbs 48.3 3.2 S S S S 46.3
750 to 999 lbs 46.9 2.4 30.6 1.1 39.7 2.7 19.1
1,000 to 9,999 lbs 25.1 1.8 33.1 7.7 36.5 7.6 16.6
10,000 to 49,999 lbs S S 48.6 9.4 S S 33.0
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more

Pipeline

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes S S S S S S S
Less than 50 lbs S S S
50 to 99 lbs S S S
100 to 499 lbs S S S S S S S
500 to 749 lbs S S S
750 to 999 lbs S S S
1,000 to 9,999 lbs S S S
10,000 to 49,999 lbs S S S
50,000 to 99,999 lbs S S S
100,000 lbs or more S S S

Multiple modes

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 16.5 46.1 42.9 4.5
Less than 50 lbs 15.1 6.9 12.6 9.1 13.4 7.6 4.4
50 to 99 lbs 32.2 2.0 24.1 2.9 19.4 2.5 10.2
100 to 499 lbs S S 30.7 3.9 30.0 3.4 11.0
500 to 749 lbs 33.9 0.8 23.6 0.4 33.4 0.3 30.4
750 to 999 lbs 48.2 0.5 S S 46.9 1.0 S
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs 47.2 0.5 31.2 1.8 36.0 5.2 17.6
50,000 to 99,999 lbs S S S S S S 34.5
100,000 lbs or more S S S S S S 27.9

Parcel, USPS or courier

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 18.4 15.5 12.9 4.5
Less than 50 lbs 15.1 6.4 12.6 4.8 13.5 5.2 4.4
50 to 99 lbs 32.2 2.0 24.1 2.0 19.4 2.7 10.2
100 to 499 lbs S S 30.7 3.0 30.0 3.6 11.0
500 to 749 lbs 33.9 0.8 23.6 1.4 33.4 0.8 30.4
750 to 999 lbs 48.4 0.5 S S 46.9 1.3 S
1,000 to 9,999 lbs S S S S S S 30.2
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more

Truck and rail

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes S S S S S S 22.0
Less than 50 lbs
50 to 99 lbs
100 to 499 lbs
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs S S 29.0 19.9 S S 14.1
50,000 to 99,999 lbs S S S S S S 34.5
100,000 lbs or more S S S S S S 29.8

Truck and water

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes S S S S S S S
Less than 50 lbs S S S S S S 41.6
50 to 99 lbs
100 to 499 lbs
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 37.5
10,000 to 49,999 lbs S S S S S S S
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 29.9

Rail and water

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes S S S S S S 31.6
Less than 50 lbs
50 to 99 lbs
100 to 499 lbs
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 31.6

Other Multiple modes

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes S S S S S S 38.5
Less than 50 lbs
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs
500 to 749 lbs
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs
10,000 to 49,999 lbs S S S S S S 30.5
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 31.7

Other and unknown modes

Shipment Weight Value Tons Ton-miles CV of average miles
per shipment
CV Std. error
of percent
CV Std. error
of percent
CV Std. error
of percent
All shipment sizes 15.0 S S 34.3 S
Less than 50 lbs 37.7 6.0 44.9 0.9 30.7 0.5 S
50 to 99 lbs 20.7 0.6 23.9 0.2 S S S
100 to 499 lbs 36.7 2.5 37.3 1.7 49.6 0.6 S
500 to 749 lbs 41.1 0.3 23.2 0.2 44.6 0.2 31.1
750 to 999 lbs S S 43.1 0.2 S S 41.5
1,000 to 9,999 lbs 30.5 8.9 29.0 8.4 46.0 5.2 33.8
10,000 to 49,999 lbs 28.8 6.7 S S 45.1 9.3 S
50,000 to 99,999 lbs 41.2 0.7 S S 45.0 5.1 40.4
100,000 lbs or more 48.3 2.3 49.3 8.2 S S 29.8

KEY:
– Represents data cell equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of high sampling variability or poor response quality.
CV Coefficient of variation of number

NOTE: The Introduction and appendixes give information onf confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at www.census.gov/cfs.

SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Individual State Data, December 2004.