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 19.2 15.0 15.8 12.5
Less than 50 lbs 17.2 1.7 11.1 20.7 0.2 9.6
50 to 99 lbs 47.3 1.8 8.8 19.1 25.0
100 to 499 lbs 31.1 3.0 23.7 0.4 40.1 1.0 11.5
500 to 749 lbs S S 18.3 0.2 33.0 0.2 20.6
750 to 999 lbs 17.2 0.5 19.7 0.1 20.6 30.7
1,000 to 9,999 lbs 11.6 1.6 10.8 0.9 16.8 1.8 13.8
10,000 to 49,999 lbs 14.2 2.9 21.7 5.3 15.3 4.4 34.6
50,000 to 99,999 lbs 11.7 0.6 18.7 3.2 25.5 3.3 13.9
100,000 lbs or more 43.2 0.8 44.8 6.3 41.7 7.6 23.8

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 22.4 15.0 16.4 10.7
Less than 50 lbs 33.0 2.1 13.1 19.2 20.8
50 to 99 lbs S S 18.3 21.3 19.0
100 to 499 lbs 35.4 3.5 18.2 0.3 15.1 0.2 12.9
500 to 749 lbs S S 16.2 0.1 31.0 0.1 35.7
750 to 999 lbs 20.2 0.6 21.5 0.1 19.5 0.1 23.3
1,000 to 9,999 lbs 13.4 2.0 12.2 0.9 17.5 2.2 12.9
10,000 to 49,999 lbs 14.5 4.3 22.1 5.5 15.6 4.9 35.9
50,000 to 99,999 lbs 11.7 0.8 18.7 3.3 25.5 3.7 13.9
100,000 lbs or more 44.8 1.1 47.6 6.7 44.3 8.1 24.1

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 21.0 17.3 11.2 12.3
Less than 50 lbs 40.3 2.2 13.4 23.6 24.0
50 to 99 lbs S S 18.3 21.3 15.8
100 to 499 lbs 40.7 4.3 18.2 0.4 15.9 0.2 13.7
500 to 749 lbs S S 16.3 0.3 31.1 0.2 35.8
750 to 999 lbs 20.6 0.6 21.5 0.2 19.7 0.1 23.0
1,000 to 9,999 lbs 13.4 1.9 12.2 1.3 17.7 1.8 13.2
10,000 to 49,999 lbs 14.5 4.3 22.0 5.0 15.6 5.6 35.8
50,000 to 99,999 lbs 11.7 0.8 18.7 3.0 25.5 3.3 13.9
100,000 lbs or more S S S S S S 37.8

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 27.5 22.9 13.6 12.2
Less than 50 lbs S S 33.1 47.3 19.4
50 to 99 lbs S S 37.7 29.9 24.8
100 to 499 lbs S S 17.6 18.1 0.3 14.5
500 to 749 lbs S S 27.5 41.7 0.2 11.5
750 to 999 lbs 20.9 0.5 25.6 26.6 0.1 20.4
1,000 to 9,999 lbs 17.5 3.8 24.9 0.6 23.3 2.3 3.9
10,000 to 49,999 lbs 8.5 7.9 25.6 8.0 17.9 6.2 30.5
50,000 to 99,999 lbs 37.7 1.3 34.8 6.7 33.5 3.5 29.3
100,000 lbs or more S S S S S S 31.9

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 15.3 24.2 19.0 16.6
Less than 50 lbs 16.9 1.0 14.1 0.1 22.4 0.1 21.0
50 to 99 lbs 24.5 1.3 18.5 0.1 19.7 0.1 14.1
100 to 499 lbs 17.5 2.6 19.9 0.6 16.1 0.7 11.7
500 to 749 lbs 17.4 1.1 22.2 0.4 23.3 0.5 8.3
750 to 999 lbs 24.6 0.7 23.7 0.4 24.7 0.3 9.4
1,000 to 9,999 lbs 15.8 1.6 13.7 2.2 17.6 1.6 5.7
10,000 to 49,999 lbs 28.6 5.9 30.5 5.6 20.5 3.4 33.6
50,000 to 99,999 lbs 16.1 1.5 22.2 2.9 33.7 3.9 21.9
100,000 lbs or more S S 41.2 1.3 47.1 0.1 31.0

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 44.8 41.2 45.8 36.6
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 S S S S S S 31.6
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs S S S S S S 31.6
10,000 to 49,999 lbs 48.2 11.0 S S 48.6 10.6 S
50,000 to 99,999 lbs
100,000 lbs or more 45.9 15.0 43.7 14.5 46.0 14.9 42.2

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
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

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
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

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 S S 37.9 S S 4.7
Less than 50 lbs S S 18.8 7.0 21.8 7.7 5.1
50 to 99 lbs S S 38.3 5.8 39.8 5.8 15.3
100 to 499 lbs S S 45.1 9.3 35.8 9.1 20.7
500 to 749 lbs S S S S 44.3 0.6 31.2
750 to 999 lbs S S S S 41.7 2.8 28.8
1,000 to 9,999 lbs 46.0 2.7 S S S S 24.7
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

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
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

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 9.8 S S 30.9 4.2
Less than 50 lbs 12.4 3.9 23.8 8.6 23.5 6.8 4.4
50 to 99 lbs 12.1 2.6 20.4 4.7 24.4 3.7 9.3
100 to 499 lbs 24.5 3.1 46.7 7.3 S S 7.7
500 to 749 lbs 37.3 0.9 S S S S 22.6
750 to 999 lbs S S S S S S 31.2
1,000 to 9,999 lbs S S S S S S 31.4
10,000 to 49,999 lbs S S 44.8 3.4 43.6 6.9 23.6
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 30.0

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 9.8 30.7 34.7 4.2
Less than 50 lbs 12.4 3.9 23.8 6.4 23.5 6.5 4.4
50 to 99 lbs 12.1 2.6 20.4 3.9 24.4 4.1 9.3
100 to 499 lbs 24.5 3.1 46.7 7.5 S S 7.7
500 to 749 lbs 37.3 0.9 S S S S 22.6
750 to 999 lbs S S S S S S 31.2
1,000 to 9,999 lbs
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 38.3 S S S S S
Less than 50 lbs S S S S S S 31.6
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 31.6
10,000 to 49,999 lbs S S S S 43.6 18.3 23.6
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 30.0

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 33.2
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 S S S S S S 33.2
10,000 to 49,999 lbs
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
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 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 32.9 47.9 47.9 33.0
Less than 50 lbs 23.1 11.2 31.2 1.1 38.8 7.6 33.0
50 to 99 lbs 45.3 0.9 S S S S S
100 to 499 lbs 35.6 5.8 32.9 6.0 S S S
500 to 749 lbs S S S S S S 40.0
750 to 999 lbs S S S S S S 31.5
1,000 to 9,999 lbs 44.5 7.8 48.4 6.6 S S 45.6
10,000 to 49,999 lbs 49.3 6.5 S S 46.2 11.8 S
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 31.6

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.