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 4.5 10.2 9.8 8.6
Less than 50 lbs 6.4 0.7 9.5 14.5 7.0
50 to 99 lbs 13.0 0.8 36.8 0.1 S S 15.3
100 to 499 lbs 7.8 0.8 12.9 0.1 9.5 8.3
500 to 749 lbs 11.3 0.2 13.0 7.5 12.2
750 to 999 lbs 11.5 0.2 21.0 5.4 21.5
1,000 to 9,999 lbs 7.9 1.2 15.4 0.6 7.3 0.5 17.3
10,000 to 49,999 lbs 9.4 2.7 16.7 4.9 13.2 6.7 8.4
50,000 to 99,999 lbs 16.9 0.7 23.7 3.9 42.9 3.2 16.5
100,000 lbs or more 14.5 0.4 24.0 4.4 20.1 6.9 10.8

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 5.4 10.7 10.0 13.9
Less than 50 lbs 11.8 0.5 14.3 23.1 35.0
50 to 99 lbs 21.4 0.8 13.3 25.4 22.9
100 to 499 lbs 11.2 1.1 15.2 0.1 13.9 7.5
500 to 749 lbs 12.7 0.3 14.0 8.2 11.7
750 to 999 lbs 10.4 0.2 22.8 8.0 19.3
1,000 to 9,999 lbs 9.0 1.4 15.8 0.6 6.5 0.4 17.3
10,000 to 49,999 lbs 10.0 3.3 16.8 5.1 12.9 6.8 8.5
50,000 to 99,999 lbs 16.9 0.9 23.8 3.9 43.0 3.3 16.5
100,000 lbs or more 14.0 0.4 25.1 4.5 19.7 6.8 9.6

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 4.3 13.4 14.5 12.3
Less than 50 lbs 13.5 0.6 15.7 25.9 24.6
50 to 99 lbs 22.2 0.9 13.0 25.0 25.8
100 to 499 lbs 11.5 1.2 15.2 0.1 14.2 0.2 8.5
500 to 749 lbs 12.5 0.3 13.9 7.5 12.7
750 to 999 lbs 10.9 0.2 22.9 0.1 8.5 19.2
1,000 to 9,999 lbs 8.7 1.5 15.9 1.0 6.0 0.9 17.2
10,000 to 49,999 lbs 7.0 2.6 17.1 4.5 13.8 5.0 8.8
50,000 to 99,999 lbs 14.0 0.7 24.0 4.6 44.9 5.0 17.3
100,000 lbs or more 34.5 0.2 32.5 0.8 38.8 0.9 S

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 6.9 14.2 15.6 9.3
Less than 50 lbs 27.3 1.3 30.0 33.2 13.2
50 to 99 lbs 37.6 1.2 25.5 38.1 14.8
100 to 499 lbs 14.5 1.3 14.2 15.8 0.2 8.2
500 to 749 lbs 7.4 0.4 13.8 8.5 10.3
750 to 999 lbs 15.6 0.3 9.5 11.2 14.5
1,000 to 9,999 lbs 8.1 1.0 7.6 0.4 7.5 1.0 7.0
10,000 to 49,999 lbs 9.6 3.1 14.0 5.5 15.4 5.4 5.9
50,000 to 99,999 lbs 19.7 0.7 31.0 5.6 48.0 6.1 19.3
100,000 lbs or more 36.0 0.1 29.1 1.1 S S 45.6

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 11.4 20.1 22.8 22.9
Less than 50 lbs 22.0 1.4 22.0 42.8 0.2 37.5
50 to 99 lbs 18.5 0.5 18.3 26.8 29.6
100 to 499 lbs 14.1 1.8 16.6 0.3 22.2 0.3 17.2
500 to 749 lbs 25.5 0.6 16.9 0.2 21.1 0.1 25.6
750 to 999 lbs 18.1 0.3 27.9 0.4 14.3 0.2 15.1
1,000 to 9,999 lbs 13.9 3.0 19.6 3.3 13.8 2.1 23.7
10,000 to 49,999 lbs 16.8 3.5 29.7 5.4 25.7 5.9 12.2
50,000 to 99,999 lbs 27.2 0.9 19.4 4.7 40.1 3.0 15.4
100,000 lbs or more 45.3 0.5 49.9 1.1 45.8 2.9 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 39.1 17.3 17.7 8.8
Less than 50 lbs S S S S S S 31.6
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 21.0
10,000 to 49,999 lbs S S 42.8 4.3 35.6 6.2 12.5
50,000 to 99,999 lbs S S S S 48.2 0.6 33.2
100,000 lbs or more 19.6 13.0 19.3 4.3 21.3 6.2 9.0

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 33.8 S S 35.9 S
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 S S S S S S 27.9
100,000 lbs or more 33.7 3.0 S S 36.1 1.2 S

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 33.8 S S 35.9 S
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 S S S S S S 27.9
100,000 lbs or more 33.7 3.0 S S 36.1 1.2 S

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 28.7 29.3 34.9 5.7
Less than 50 lbs 41.3 9.3 S S S S 5.5
50 to 99 lbs 37.7 3.3 S S S S 15.3
100 to 499 lbs 30.8 8.6 35.6 5.8 36.0 4.5 7.9
500 to 749 lbs S S S S S S 25.3
750 to 999 lbs S S S S S S 30.0
1,000 to 9,999 lbs 43.1 3.8 S S S S 19.8
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

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
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 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 6.3 48.5 34.2 4.8
Less than 50 lbs 9.4 2.5 16.2 5.1 20.0 3.7 4.5
50 to 99 lbs 22.2 3.2 S S S S 11.2
100 to 499 lbs 11.0 1.9 13.6 4.1 15.6 2.4 7.7
500 to 749 lbs 22.4 0.3 31.7 1.1 30.6 0.5 27.0
750 to 999 lbs S S S S S S 29.7
1,000 to 9,999 lbs S S S S S S 26.6
10,000 to 49,999 lbs 26.0 2.4 35.2 9.4 35.9 10.5 20.7
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 28.3

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 8.3 22.4 31.3 4.8
Less than 50 lbs 9.5 2.0 16.2 4.2 20.0 5.8 4.5
50 to 99 lbs 22.2 3.1 S S S S 11.2
100 to 499 lbs 11.0 2.0 13.4 5.1 15.7 5.3 7.7
500 to 749 lbs 22.4 0.3 33.7 1.2 30.6 1.0 27.2
750 to 999 lbs S S S S S S 22.0
1,000 to 9,999 lbs S S S S S S 29.8
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 32.2 40.3 36.9 15.6
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs S S S S S S 31.6
500 to 749 lbs
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs S S S S S S 29.8
10,000 to 49,999 lbs 30.8 10.2 37.8 12.1 41.3 11.0 17.9
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 31.6

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 30.6
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs S S S S S S 37.4
500 to 749 lbs
750 to 999 lbs S S S S S S 31.8
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

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 48.8 S S S S 27.2
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 27.9
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 30.6

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 S
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs S S S S S S 31.6
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs
1,000 to 9,999 lbs
10,000 to 49,999 lbs S S S S S S 37.8
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 31.6

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 26.8 40.3 46.0 34.1
Less than 50 lbs 43.6 5.1 36.7 1.2 S S 38.3
50 to 99 lbs 43.1 3.2 42.3 1.0 S S 29.9
100 to 499 lbs 37.4 2.4 32.5 2.8 43.6 2.3 24.1
500 to 749 lbs 42.4 0.8 43.0 1.0 42.7 0.1 S
750 to 999 lbs 44.3 0.6 31.9 0.4 S S 34.6
1,000 to 9,999 lbs 37.3 4.9 26.9 5.4 S S 17.9
10,000 to 49,999 lbs 30.5 6.7 31.0 9.4 S S 21.8
50,000 to 99,999 lbs S S 47.4 3.6 49.1 1.3 25.6
100,000 lbs or more S S S S S S S

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.