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 11.2 20.3 21.9 7.3
Less than 50 lbs 23.9 2.2 6.7 11.4 0.3 6.9
50 to 99 lbs 41.9 1.6 11.2 16.1 0.2 10.0
100 to 499 lbs 10.1 1.6 14.6 0.5 18.5 0.9 17.9
500 to 749 lbs 22.1 1.2 8.8 0.2 21.7 0.2 20.2
750 to 999 lbs 18.6 0.7 13.2 0.1 24.6 0.2 24.6
1,000 to 9,999 lbs 12.0 2.4 13.8 1.9 12.8 1.8 21.9
10,000 to 49,999 lbs 19.3 2.8 23.5 3.7 17.0 5.4 15.2
50,000 to 99,999 lbs 24.2 0.7 23.2 3.8 42.8 2.2 19.6
100,000 lbs or more 23.5 0.4 31.5 2.5 39.8 5.0 14.6

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 21.5 22.5 16.4
Less than 50 lbs 17.1 1.0 16.2 30.0 0.1 19.6
50 to 99 lbs 12.2 0.3 17.5 0.1 35.1 0.1 22.8
100 to 499 lbs 16.3 2.6 17.9 0.7 26.2 0.9 21.8
500 to 749 lbs 23.3 1.6 10.8 0.3 21.0 0.2 18.1
750 to 999 lbs 20.1 0.9 13.0 0.2 25.8 0.2 23.9
1,000 to 9,999 lbs 12.1 2.3 14.6 2.1 13.5 2.0 22.3
10,000 to 49,999 lbs 19.4 3.8 24.4 3.9 17.0 5.6 17.5
50,000 to 99,999 lbs 24.2 0.9 26.0 4.0 43.3 2.2 23.0
100,000 lbs or more 27.4 0.4 31.7 2.4 39.9 5.0 17.2

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 8.7 20.3 16.6 14.9
Less than 50 lbs 18.2 1.1 16.3 40.8 19.9
50 to 99 lbs 11.5 0.3 17.5 0.1 32.2 20.2
100 to 499 lbs 17.9 3.0 18.2 0.8 29.2 1.1 17.6
500 to 749 lbs 26.6 1.3 10.9 0.3 23.0 0.3 20.0
750 to 999 lbs 20.1 1.0 13.0 0.2 25.9 0.3 24.0
1,000 to 9,999 lbs 11.9 2.1 14.6 2.2 13.7 2.3 22.6
10,000 to 49,999 lbs 19.4 4.2 24.5 4.0 18.0 4.7 18.1
50,000 to 99,999 lbs 24.5 0.9 26.0 4.6 47.7 4.4 25.8
100,000 lbs or more 23.8 0.2 44.2 2.2 42.9 1.2 31.3

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 13.1 26.7 15.0 14.7
Less than 50 lbs 37.5 0.6 S S S S 19.9
50 to 99 lbs 30.4 0.3 41.5 39.2 16.8
100 to 499 lbs 23.4 4.4 46.8 0.7 33.2 1.3 17.6
500 to 749 lbs 45.7 2.0 18.3 0.1 25.5 0.3 16.6
750 to 999 lbs 31.6 0.9 27.3 0.1 30.7 0.3 15.1
1,000 to 9,999 lbs 20.1 3.4 14.3 2.1 19.7 3.6 12.5
10,000 to 49,999 lbs 18.2 5.1 21.4 6.4 19.8 5.0 8.2
50,000 to 99,999 lbs 33.6 1.0 33.3 6.3 31.2 3.4 17.9
100,000 lbs or more 42.7 0.1 S S S S S

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 8.0 22.3 37.8 16.6
Less than 50 lbs 15.1 2.0 13.1 19.3 33.6
50 to 99 lbs 10.2 0.5 18.0 0.2 26.9 0.1 28.1
100 to 499 lbs 17.8 2.1 11.9 1.2 18.2 0.6 20.5
500 to 749 lbs 20.4 1.2 12.4 0.5 21.3 0.2 17.7
750 to 999 lbs 20.2 1.1 13.5 0.3 14.4 0.2 16.7
1,000 to 9,999 lbs 9.9 2.3 17.1 3.2 23.5 1.8 20.9
10,000 to 49,999 lbs 26.3 4.2 29.5 5.5 31.5 6.0 24.2
50,000 to 99,999 lbs 39.6 1.6 26.3 5.4 S S 32.9
100,000 lbs or more 29.0 0.5 25.4 1.4 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 48.7 41.7 40.1 12.7
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
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 31.6
10,000 to 49,999 lbs 46.7 7.1 45.7 3.1 48.4 3.8 11.5
50,000 to 99,999 lbs 41.4 1.3 S S S S 30.8
100,000 lbs or more 45.5 14.6 42.3 3.7 41.6 4.5 16.4

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 21.3 43.0 S S 6.1
Less than 50 lbs 34.0 7.8 36.0 4.8 32.9 6.0 7.5
50 to 99 lbs 40.0 2.6 49.6 4.4 44.0 5.3 16.6
100 to 499 lbs 38.2 9.6 S S S S 9.6
500 to 749 lbs S S S S 48.9 1.8 24.5
750 to 999 lbs S S S S S S 29.0
1,000 to 9,999 lbs 49.9 10.8 41.6 7.3 S S 26.0
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 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 29.5 21.1 24.1 7.3
Less than 50 lbs 29.2 6.3 11.6 5.7 11.2 6.2 7.5
50 to 99 lbs S S 17.9 3.0 17.6 2.5 10.1
100 to 499 lbs 25.8 5.9 23.2 5.3 31.1 3.8 10.5
500 to 749 lbs 40.8 0.4 35.7 0.6 43.3 0.7 24.8
750 to 999 lbs 43.3 0.2 37.9 0.7 49.3 0.3 39.4
1,000 to 9,999 lbs S S S S S S 27.9
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 31.6

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 29.5 12.9 16.2 7.3
Less than 50 lbs 29.2 6.3 11.6 4.2 11.2 4.9 7.5
50 to 99 lbs S S 17.9 2.2 17.6 2.4 10.1
100 to 499 lbs 25.8 6.0 23.2 4.8 31.2 5.1 10.6
500 to 749 lbs 41.1 0.4 36.6 0.7 45.6 1.1 23.9
750 to 999 lbs 43.3 0.2 38.7 0.8 49.3 0.4 S
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 S S S S S S 30.0
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
10,000 to 49,999 lbs S S S S S S S
50,000 to 99,999 lbs
100,000 lbs or more

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 47.8 S S S S 16.2
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs S S S S S S 29.8
100 to 499 lbs S S S S S S 21.1
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 27.9
10,000 to 49,999 lbs S S S S S S 28.1
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 31.6

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 S S S S S S 31.6
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 S S S S S S 31.6
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 24.7 42.6 26.3 28.3
Less than 50 lbs 37.4 4.0 28.6 1.7 S S 31.3
50 to 99 lbs 43.4 1.7 35.7 0.9 S S 30.9
100 to 499 lbs 24.4 5.0 47.7 3.5 42.9 3.4 20.3
500 to 749 lbs 46.7 1.0 S S 47.7 0.3 S
750 to 999 lbs S S 37.5 2.5 S S 36.9
1,000 to 9,999 lbs 34.5 6.0 46.0 11.6 25.6 9.6 39.7
10,000 to 49,999 lbs 31.5 1.8 S S 43.6 10.3 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

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.