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 13.4 25.3 10.5 19.8
Less than 50 lbs 15.0 1.5 13.5 24.7 0.1 14.2
50 to 99 lbs 15.5 0.5 14.3 15.6 9.9
100 to 499 lbs 12.1 1.8 10.6 0.2 21.1 0.5 22.2
500 to 749 lbs 13.1 0.5 27.0 0.2 15.0 0.2 32.2
750 to 999 lbs 14.6 0.3 24.0 0.1 19.4 17.6
1,000 to 9,999 lbs 21.4 2.9 41.4 3.3 21.0 2.0 29.9
10,000 to 49,999 lbs 16.4 2.9 35.6 6.0 13.7 5.3 24.0
50,000 to 99,999 lbs 20.1 0.5 20.9 4.1 28.5 2.5 15.6
100,000 lbs or more 26.7 0.5 31.6 2.7 39.6 6.3 17.7

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 14.3 25.6 11.1 18.4
Less than 50 lbs 18.7 0.8 19.7 29.8 18.4
50 to 99 lbs 16.4 0.5 20.8 18.9 16.3
100 to 499 lbs 10.7 1.8 13.3 0.2 7.6 0.1 16.0
500 to 749 lbs 13.7 0.5 28.9 0.2 13.7 0.1 25.7
750 to 999 lbs 15.8 0.4 25.9 0.1 20.6 17.7
1,000 to 9,999 lbs 21.6 2.9 43.5 3.3 22.1 2.0 30.9
10,000 to 49,999 lbs 16.6 2.9 35.7 6.0 14.2 5.3 24.8
50,000 to 99,999 lbs 19.9 0.6 20.9 4.1 28.6 2.5 15.3
100,000 lbs or more 26.7 0.6 31.6 2.8 39.5 6.4 17.7

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 14.8 27.1 11.5 15.5
Less than 50 lbs 20.9 0.8 19.8 34.7 19.0
50 to 99 lbs 16.2 0.5 20.9 19.7 15.4
100 to 499 lbs 10.6 1.9 13.3 0.2 7.7 0.1 16.8
500 to 749 lbs 15.5 0.5 29.0 0.2 14.4 0.1 29.6
750 to 999 lbs 15.8 0.4 25.9 0.1 20.8 17.8
1,000 to 9,999 lbs 21.7 2.9 43.6 3.5 22.5 2.0 31.1
10,000 to 49,999 lbs 16.8 3.0 35.7 5.6 14.5 3.3 25.6
50,000 to 99,999 lbs 19.9 0.6 20.9 4.5 28.6 2.6 15.3
100,000 lbs or more 42.7 0.4 S S S S 30.8

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 15.4 11.0 15.2 10.5
Less than 50 lbs 29.8 0.4 25.9 33.9 19.8
50 to 99 lbs 14.5 22.1 18.0 18.3
100 to 499 lbs 24.3 1.4 18.4 16.1 0.1 7.4
500 to 749 lbs 25.9 0.7 34.2 15.2 23.6
750 to 999 lbs 21.8 0.4 32.1 25.6 0.1 13.7
1,000 to 9,999 lbs 17.5 3.5 26.2 1.0 16.1 1.5 19.1
10,000 to 49,999 lbs 20.0 3.6 17.4 5.6 18.2 3.0 12.0
50,000 to 99,999 lbs 14.8 0.9 27.6 5.5 29.5 2.4 14.9
100,000 lbs or more S S S S S S 27.0

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 26.9 38.0 20.0 15.9
Less than 50 lbs 23.7 1.9 20.5 36.2 0.2 20.5
50 to 99 lbs 18.1 0.9 21.9 0.1 25.9 0.1 13.6
100 to 499 lbs 13.2 2.8 14.8 0.5 14.2 0.4 5.6
500 to 749 lbs 20.2 0.5 29.7 0.3 26.8 0.2 13.6
750 to 999 lbs 23.6 0.6 27.0 0.3 25.9 0.2 10.1
1,000 to 9,999 lbs 32.8 3.7 47.3 4.9 38.2 3.5 16.1
10,000 to 49,999 lbs 37.0 5.5 47.7 5.8 22.0 4.6 25.6
50,000 to 99,999 lbs 41.0 0.6 38.9 3.6 34.6 4.4 29.2
100,000 lbs or more 43.8 0.1 36.9 0.6 38.9 0.6 23.5

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 26.7 43.9 39.4 15.0
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 28.9
10,000 to 49,999 lbs S S S S S S 34.3
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 32.5 9.7 45.2 10.4 42.0 13.1 17.0

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 S S S S S S 28.9
Less than 50 lbs
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 S S S S S S 31.6
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 30.1

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 S S S S S S 28.9
Less than 50 lbs
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 S S S S S S 31.6
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 30.1

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
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 36.5 46.2 42.9 8.3
Less than 50 lbs 42.1 10.2 26.5 4.3 28.6 5.9 6.2
50 to 99 lbs 42.9 9.4 32.6 7.5 37.1 2.8 19.6
100 to 499 lbs S S 28.6 7.5 38.5 8.5 27.0
500 to 749 lbs S S S S S S 26.7
750 to 999 lbs S S S S S S 30.0
1,000 to 9,999 lbs S S S S S S 16.8
10,000 to 49,999 lbs S S S S S S 33.7
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 31.6

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 14.8 14.7 16.2 10.9
Less than 50 lbs 16.5 5.4 28.8 5.0 28.5 6.2 9.8
50 to 99 lbs 32.1 2.7 24.5 1.8 20.4 1.6 23.6
100 to 499 lbs 30.8 3.7 32.9 5.4 S S 21.3
500 to 749 lbs 38.6 0.9 36.8 1.9 S S 21.9
750 to 999 lbs 30.2 0.3 34.8 1.0 38.8 0.2 43.0
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs 40.9 1.9 28.8 8.0 33.6 10.6 22.5
50,000 to 99,999 lbs S S S S S S 32.7
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 15.4 22.4 34.2 11.0
Less than 50 lbs 16.5 5.3 28.8 5.0 28.6 6.3 9.9
50 to 99 lbs 32.1 2.7 24.5 2.4 20.6 3.8 23.7
100 to 499 lbs 30.7 3.8 32.8 5.3 S S 21.5
500 to 749 lbs 38.6 0.9 36.8 2.7 S S 21.9
750 to 999 lbs 30.4 0.3 35.2 1.8 38.9 0.4 43.1
1,000 to 9,999 lbs S S S S S S 31.6
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 36.1 36.5 39.7 29.6
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
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs 43.2 18.9 47.2 18.0 48.0 18.7 24.7
50,000 to 99,999 lbs S S S S S S 32.7
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 44.1
Less than 50 lbs S S S S S S 31.9
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
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 27.7
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 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
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

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
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 23.0 29.2 37.9 S
Less than 50 lbs 22.8 3.6 25.4 0.6 32.5 0.3 S
50 to 99 lbs 49.4 0.8 S S 49.9 S
100 to 499 lbs 47.3 5.0 S S S S S
500 to 749 lbs 43.2 1.5 48.3 1.4 S S 31.2
750 to 999 lbs S S S S S S S
1,000 to 9,999 lbs 28.6 10.7 29.0 10.5 S S S
10,000 to 49,999 lbs 48.5 5.6 40.8 6.9 S S S
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more

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.