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 3.4 10.5 3.1 8.2
Less than 50 lbs 10.3 1.3 16.7 10.1 7.2
50 to 99 lbs 12.3 0.5 17.9 12.7 16.7
100 to 499 lbs 8.6 0.8 12.4 0.1 9.9 15.4
500 to 749 lbs 13.8 0.4 9.2 9.8 16.2
750 to 999 lbs 13.2 0.3 10.7 9.3 16.1
1,000 to 9,999 lbs 4.7 0.9 10.1 0.6 7.4 0.4 10.9
10,000 to 49,999 lbs 9.0 2.6 21.2 4.5 10.4 3.2 12.0
50,000 to 99,999 lbs 20.9 1.2 21.3 2.6 20.4 1.3 22.7
100,000 lbs or more 8.6 0.6 7.2 4.4 9.4 4.4 17.5

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 3.6 11.2 4.0 12.0
Less than 50 lbs 31.4 1.1 8.7 16.3 16.9
50 to 99 lbs 23.7 0.5 11.6 17.6 20.1
100 to 499 lbs 9.3 1.0 15.5 0.1 14.1 14.9
500 to 749 lbs 14.3 0.6 11.4 10.7 16.2
750 to 999 lbs 13.4 0.4 12.1 8.0 14.3
1,000 to 9,999 lbs 4.8 1.4 10.8 0.6 7.3 0.4 13.9
10,000 to 49,999 lbs 9.9 2.9 21.8 4.5 11.7 3.7 11.3
50,000 to 99,999 lbs 21.2 1.4 21.1 2.7 21.1 1.5 23.4
100,000 lbs or more 6.9 0.6 6.2 4.4 10.3 5.0 16.5

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 4.1 17.4 8.7 13.4
Less than 50 lbs 36.2 1.2 9.4 16.9 23.3
50 to 99 lbs 26.0 0.6 11.9 15.9 22.0
100 to 499 lbs 9.4 1.1 15.6 0.3 14.5 0.2 14.9
500 to 749 lbs 14.7 0.6 11.6 0.1 10.8 0.2 16.1
750 to 999 lbs 13.4 0.4 12.1 8.0 14.4
1,000 to 9,999 lbs 4.8 1.7 10.8 1.6 7.4 1.3 13.8
10,000 to 49,999 lbs 9.9 2.9 21.9 3.7 10.3 2.3 11.7
50,000 to 99,999 lbs 22.7 1.5 22.5 3.4 16.8 1.4 14.6
100,000 lbs or more 15.0 0.1 31.4 0.9 30.1 1.7 16.1

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 5.1 14.2 8.0 5.9
Less than 50 lbs S S 21.3 22.2 11.3
50 to 99 lbs 34.3 0.6 17.8 19.5 11.8
100 to 499 lbs 13.1 1.3 11.8 0.1 15.3 0.2 5.0
500 to 749 lbs 14.2 0.6 9.2 13.0 0.1 7.1
750 to 999 lbs 18.0 0.6 8.2 9.5 8.2
1,000 to 9,999 lbs 9.2 2.2 10.5 1.4 9.7 1.5 5.7
10,000 to 49,999 lbs 10.2 3.0 17.8 3.6 10.5 2.6 9.7
50,000 to 99,999 lbs 22.4 1.4 25.1 4.1 14.1 1.4 29.6
100,000 lbs or more 19.1 0.2 45.6 1.3 33.1 2.4 19.2

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 12.6 27.2 27.5 20.8
Less than 50 lbs 10.8 0.5 14.5 31.4 27.9
50 to 99 lbs 28.1 1.0 14.8 28.2 32.3
100 to 499 lbs 10.6 1.8 20.9 0.5 31.8 0.5 13.4
500 to 749 lbs 21.5 1.0 23.3 0.3 19.9 0.4 10.5
750 to 999 lbs 17.1 0.3 22.9 0.1 21.1 0.1 8.8
1,000 to 9,999 lbs 11.2 1.2 20.9 2.2 19.2 2.4 15.8
10,000 to 49,999 lbs 18.5 3.8 31.5 5.0 27.4 3.7 16.6
50,000 to 99,999 lbs 35.2 1.7 40.7 4.3 46.9 3.1 20.0
100,000 lbs or more 33.9 0.1 S S S S 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 17.0 20.5 21.6 19.3
Less than 50 lbs S S S S S S S
50 to 99 lbs S S S S S S 31.7
100 to 499 lbs S S S S S S 32.0
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs S S S S S S 31.0
1,000 to 9,999 lbs 44.9 0.4 31.8 38.1 29.8
10,000 to 49,999 lbs 24.4 3.3 26.0 0.9 33.1 2.4 20.2
50,000 to 99,999 lbs S S S S S S 22.7
100,000 lbs or more 12.6 4.5 18.7 2.0 25.5 4.8 21.9

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 10.7 21.1 11.7 13.0
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 29.8
10,000 to 49,999 lbs S S S S S S 27.2
50,000 to 99,999 lbs
100,000 lbs or more 13.8 6.8 22.4 4.8 13.8 5.3 11.1

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 10.8 21.1 11.7 12.9
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 27.2
50,000 to 99,999 lbs
100,000 lbs or more 13.8 6.8 22.4 4.8 13.8 5.3 11.1

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 31.6
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 S S S S S S 31.6
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

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 20.1 18.6 27.2 7.0
Less than 50 lbs 39.6 8.6 19.9 6.3 20.9 6.9 8.8
50 to 99 lbs 25.7 8.3 24.1 3.9 28.6 6.0 10.5
100 to 499 lbs 40.5 8.7 33.7 3.5 36.6 2.9 9.5
500 to 749 lbs S S 43.4 2.4 49.8 3.0 17.4
750 to 999 lbs 35.9 0.4 46.9 0.9 45.3 0.7 20.9
1,000 to 9,999 lbs 30.1 2.3 30.5 6.3 34.9 7.7 12.0
10,000 to 49,999 lbs S S S S S S 31.0
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 17.4 18.2 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 S 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 17.4 0.4 18.2 0.1 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 14.3 22.9 23.2 7.1
Less than 50 lbs 14.0 2.4 24.3 1.6 12.7 1.0 6.2
50 to 99 lbs 17.5 1.4 34.6 0.9 18.1 0.5 16.6
100 to 499 lbs 25.7 2.3 34.3 2.1 9.9 0.9 20.6
500 to 749 lbs 33.2 0.3 S S 36.4 0.1 23.4
750 to 999 lbs 35.3 0.3 47.1 1.2 S S 23.7
1,000 to 9,999 lbs 23.8 0.5 30.6 0.7 39.2 0.8 21.2
10,000 to 49,999 lbs 42.7 2.3 34.1 6.4 24.6 7.3 17.0
50,000 to 99,999 lbs S S S S 46.8 1.6 S
100,000 lbs or more 23.8 0.7 34.3 11.5 31.8 10.8 S

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 14.2 31.7 11.3 7.1
Less than 50 lbs 14.0 2.9 24.3 2.9 12.7 3.4 6.3
50 to 99 lbs 17.5 1.5 34.6 1.2 18.3 1.7 16.5
100 to 499 lbs 25.8 2.4 34.4 1.7 9.6 1.8 20.4
500 to 749 lbs 33.8 0.3 S S 37.9 1.9 26.1
750 to 999 lbs 35.6 0.3 47.3 2.7 S S 22.0
1,000 to 9,999 lbs S S S S S S 35.1
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 37.1 46.5 17.8 13.7
Less than 50 lbs S S S S S S 27.5
50 to 99 lbs
100 to 499 lbs S S 41.4 47.3 27.1
500 to 749 lbs S S 45.4 S S 24.6
750 to 999 lbs S S S S S S 29.0
1,000 to 9,999 lbs 27.9 5.1 33.5 1.4 36.8 0.7 14.3
10,000 to 49,999 lbs 45.4 9.1 30.9 13.1 28.2 9.5 7.9
50,000 to 99,999 lbs S S 35.0 1.2 37.3 1.5 21.3
100,000 lbs or more 33.6 7.9 S S 34.3 10.2 S

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 34.9 34.2 45.3 47.8
Less than 50 lbs S S S S S S 29.8
50 to 99 lbs S S S S S S 29.8
100 to 499 lbs S S S S S S 28.9
500 to 749 lbs S S S S S S 29.8
750 to 999 lbs S S S S S S 30.3
1,000 to 9,999 lbs S S S S S S 29.1
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 30.1
100,000 lbs or more 49.1 16.2 45.7 18.8 S S 26.2

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 28.2
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
10,000 to 49,999 lbs
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 25.9

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 31.0
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 31.4
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 32.0

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 16.2 27.6 23.3 48.3
Less than 50 lbs 23.1 2.7 35.8 0.3 26.5 0.2 S
50 to 99 lbs 43.8 1.1 31.9 0.2 42.3 S
100 to 499 lbs 40.9 3.0 31.3 1.0 35.1 0.4 S
500 to 749 lbs S S 43.4 0.4 38.2 S
750 to 999 lbs 37.8 0.1 45.1 0.3 S S S
1,000 to 9,999 lbs 25.8 4.9 36.0 8.4 25.4 7.1 45.8
10,000 to 49,999 lbs 26.2 5.0 40.4 9.6 31.0 7.9 37.0
50,000 to 99,999 lbs 46.8 1.9 S S 41.4 0.9 S
100,000 lbs or more 39.4 11.3 S S 34.5 6.6 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.