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 8.0 10.4 16.9 12.4
Less than 50 lbs 43.6 2.7 14.2 16.4 12.1
50 to 99 lbs 33.4 0.4 24.6 21.2 26.8
100 to 499 lbs 19.3 0.8 15.4 17.4 16.5
500 to 749 lbs 14.0 0.2 11.4 14.1 14.5
750 to 999 lbs S S 15.6 14.0 21.5
1,000 to 9,999 lbs 12.2 2.3 16.4 0.2 25.8 0.4 23.0
10,000 to 49,999 lbs 6.6 2.7 10.9 1.5 8.6 1.7 11.2
50,000 to 99,999 lbs 27.1 0.7 24.2 1.0 37.6 0.5 20.4
100,000 lbs or more 9.7 2.1 11.7 2.3 18.4 2.4 17.2

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 8.4 12.0 17.1 14.5
Less than 50 lbs S S 19.1 31.8 20.8
50 to 99 lbs 43.5 0.5 26.6 27.8 20.9
100 to 499 lbs 21.9 0.8 14.7 17.5 18.9
500 to 749 lbs 11.8 0.2 10.9 14.4 15.4
750 to 999 lbs S S 16.4 14.9 22.4
1,000 to 9,999 lbs 11.9 2.3 15.4 0.3 24.8 0.3 22.9
10,000 to 49,999 lbs 5.9 3.0 11.0 2.8 8.8 1.8 10.5
50,000 to 99,999 lbs 27.0 0.8 23.2 1.2 28.0 0.5 25.2
100,000 lbs or more 11.9 2.5 14.1 4.0 18.8 2.5 21.2

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 10.1 12.4 9.0 14.2
Less than 50 lbs S S 19.2 34.1 11.2
50 to 99 lbs 45.5 0.5 26.7 28.9 21.5
100 to 499 lbs 22.2 0.9 14.8 0.1 17.8 0.1 19.1
500 to 749 lbs 11.8 0.3 10.9 14.5 15.4
750 to 999 lbs S S 16.4 14.9 22.4
1,000 to 9,999 lbs 11.9 2.5 15.4 0.8 24.8 1.7 22.9
10,000 to 49,999 lbs 5.9 4.3 10.4 4.5 8.9 2.7 9.7
50,000 to 99,999 lbs 28.3 1.0 22.8 3.3 24.4 1.8 11.5
100,000 lbs or more 32.2 0.3 40.9 3.1 38.4 2.1 33.9

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 12.8 16.8 10.8 18.4
Less than 50 lbs S S S S S S 31.1
50 to 99 lbs S S S S S S 21.6
100 to 499 lbs 40.0 0.9 25.6 29.5 0.1 16.4
500 to 749 lbs 19.0 0.3 13.4 20.5 15.7
750 to 999 lbs S S 35.4 21.5 23.3
1,000 to 9,999 lbs 20.6 3.7 18.0 0.7 31.2 1.9 12.4
10,000 to 49,999 lbs 7.6 5.3 12.9 4.3 11.0 2.6 13.2
50,000 to 99,999 lbs 35.6 1.4 25.5 4.0 25.2 1.6 14.4
100,000 lbs or more 38.7 0.3 38.5 3.4 37.2 1.8 35.3

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 8.4 16.0 14.8 13.5
Less than 50 lbs 17.0 1.1 9.0 14.2 23.9
50 to 99 lbs 20.9 0.6 24.5 22.4 24.1
100 to 499 lbs 15.8 2.0 14.9 0.3 12.6 0.2 15.9
500 to 749 lbs 17.0 0.8 13.3 0.2 17.2 0.2 10.8
750 to 999 lbs 19.0 0.6 15.8 0.2 21.2 0.2 23.6
1,000 to 9,999 lbs 12.7 2.6 18.0 2.8 17.5 3.2 16.3
10,000 to 49,999 lbs 13.6 3.0 22.9 6.6 19.5 4.7 27.0
50,000 to 99,999 lbs 26.8 1.0 24.8 3.3 26.3 3.0 19.1
100,000 lbs or more 37.0 0.2 S S 49.7 3.7 35.7

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 15.3 19.4 19.9 13.8
Less than 50 lbs
50 to 99 lbs
100 to 499 lbs S S S S S S 31.6
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 30.0
10,000 to 49,999 lbs S S S S 46.9 0.1 S
50,000 to 99,999 lbs S S S S 46.4 36.6
100,000 lbs or more 15.3 0.9 19.5 1.0 19.9 0.1 10.2

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 38.9 43.2 S S 24.5
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 31.6
50,000 to 99,999 lbs S S S S S S 30.1
100,000 lbs or more 37.6 10.0 43.4 10.5 S S 23.7

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 38.9 43.2 S S 24.5
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 31.6
50,000 to 99,999 lbs S S S S S S 30.1
100,000 lbs or more 37.6 10.0 43.4 10.5 S S 23.7

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
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

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 42.8 32.8 27.5 21.9
Less than 50 lbs S S 39.9 10.2 40.1 9.6 21.5
50 to 99 lbs S S 43.7 7.3 46.7 7.0 23.9
100 to 499 lbs S S 41.2 10.1 S S 26.3
500 to 749 lbs S S S S S S 30.2
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 30.5
10,000 to 49,999 lbs
50,000 to 99,999 lbs
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 S S S S
50 to 99 lbs S S S
100 to 499 lbs 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 S S S S
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more S S S S 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 19.7 37.8 32.3 8.2
Less than 50 lbs 15.0 5.5 15.9 5.4 19.3 7.1 8.5
50 to 99 lbs 19.0 1.7 34.3 1.3 32.1 0.8 29.8
100 to 499 lbs 37.0 2.6 40.5 4.0 29.4 1.7 33.9
500 to 749 lbs S S S S S S 23.2
750 to 999 lbs S S S S S S 49.5
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs 42.6 7.9 33.6 7.3 40.7 7.9 24.7
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 36.8 3.0 40.6 14.9 35.7 14.1 19.1

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 17.9 25.3 15.4 8.2
Less than 50 lbs 15.0 2.9 15.9 7.4 19.3 7.5 8.5
50 to 99 lbs 19.0 2.0 34.3 1.9 32.1 3.4 29.8
100 to 499 lbs 37.0 3.4 40.5 6.2 29.4 6.2 33.9
500 to 749 lbs S S S S S S 23.2
750 to 999 lbs S S S S S S 49.5
1,000 to 9,999 lbs S S S S S S 30.0
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 37.0 47.1 44.9 39.5
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 33.0
10,000 to 49,999 lbs 42.6 18.0 S S 40.8 17.3 25.0
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 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 28.0
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
10,000 to 49,999 lbs S S S S S S 31.6
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 29.8

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 43.7 49.0 45.9 21.3
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
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more 43.7 49.0 45.9 21.3

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
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

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 33.6 41.2 S S 39.4
Less than 50 lbs 36.2 2.0 41.1 0.1 35.1 0.1 S
50 to 99 lbs S S S S S S 32.6
100 to 499 lbs 43.0 1.8 39.9 2.0 35.6 1.7 S
500 to 749 lbs S S S S 40.8 S
750 to 999 lbs S S S S S S 30.7
1,000 to 9,999 lbs 29.4 9.9 S S S S 31.8
10,000 to 49,999 lbs 47.4 2.8 39.3 10.7 36.0 13.7 48.7
50,000 to 99,999 lbs S S S S S S 31.4
100,000 lbs or more S S 41.4 18.0 S S 35.8

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.