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 8.9 9.6 18.0 10.0
Less than 50 lbs 8.6 1.1 9.0 11.2 12.3
50 to 99 lbs 11.1 0.4 10.3 11.7 13.2
100 to 499 lbs 8.3 0.8 11.7 0.1 14.7 0.2 16.8
500 to 749 lbs 11.1 0.4 18.3 11.5 0.1 26.1
750 to 999 lbs 16.0 0.4 16.3 18.6 32.2
1,000 to 9,999 lbs 11.6 2.2 8.6 0.9 16.1 2.3 8.8
10,000 to 49,999 lbs 11.2 1.2 7.8 3.3 8.6 3.3 7.1
50,000 to 99,999 lbs 39.5 1.0 9.3 1.6 13.5 0.9 9.4
100,000 lbs or more 36.1 1.5 29.9 4.3 38.5 5.5 15.4

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 10.3 10.3 18.3 14.3
Less than 50 lbs 17.6 0.6 15.9 18.0 18.8
50 to 99 lbs 12.9 0.3 18.6 12.2 22.1
100 to 499 lbs 8.9 0.8 12.9 0.1 14.6 0.1 21.1
500 to 749 lbs 12.1 0.4 18.7 13.4 23.8
750 to 999 lbs 17.7 0.5 15.3 20.0 0.1 32.8
1,000 to 9,999 lbs 8.3 2.1 7.2 0.6 9.4 1.0 9.1
10,000 to 49,999 lbs 11.8 1.2 8.0 3.3 7.4 4.2 6.7
50,000 to 99,999 lbs 41.7 1.1 8.1 1.4 15.4 0.9 9.1
100,000 lbs or more 36.5 1.7 31.0 4.3 39.7 5.7 14.4

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 8.5 6.4 9.3 15.4
Less than 50 lbs 19.8 0.6 16.2 23.0 17.3
50 to 99 lbs 15.4 0.3 18.9 14.0 22.5
100 to 499 lbs 9.1 0.8 13.0 0.2 14.8 0.2 21.6
500 to 749 lbs 12.4 0.3 18.8 0.1 12.7 0.1 24.0
750 to 999 lbs 17.7 0.6 15.3 20.1 0.1 32.9
1,000 to 9,999 lbs 9.2 2.3 7.9 0.7 10.3 1.2 9.6
10,000 to 49,999 lbs 12.1 1.8 7.9 2.8 7.7 2.3 7.1
50,000 to 99,999 lbs 44.0 1.4 7.9 1.3 16.5 1.1 9.1
100,000 lbs or more 34.5 0.2 38.4 2.5 S S 23.0

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 12.2 11.3 11.1 10.3
Less than 50 lbs 19.6 0.2 24.2 29.8 13.7
50 to 99 lbs 17.1 0.1 11.8 17.8 12.5
100 to 499 lbs 12.4 0.5 21.0 0.1 17.4 0.2 15.1
500 to 749 lbs 20.9 0.4 35.3 0.2 15.7 0.1 23.2
750 to 999 lbs 16.4 0.2 30.1 0.1 24.6 0.1 27.2
1,000 to 9,999 lbs 12.0 2.3 8.3 0.5 9.2 1.1 8.3
10,000 to 49,999 lbs 13.8 2.0 11.5 2.5 8.9 2.8 6.9
50,000 to 99,999 lbs S S 8.3 1.8 18.0 1.1 16.5
100,000 lbs or more 34.4 0.2 S S S S 30.6

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 7.6 9.0 10.5 13.5
Less than 50 lbs 25.6 1.5 17.7 28.6 15.5
50 to 99 lbs 24.7 0.8 23.5 22.1 12.0
100 to 499 lbs 15.9 1.3 22.5 0.3 20.3 0.3 27.6
500 to 749 lbs 22.4 0.7 26.4 0.2 22.6 0.2 20.0
750 to 999 lbs 32.9 1.5 22.2 0.2 28.2 0.1 8.2
1,000 to 9,999 lbs 11.9 3.1 12.0 1.5 19.9 2.3 15.8
10,000 to 49,999 lbs 9.1 2.5 10.8 3.9 10.7 3.1 15.3
50,000 to 99,999 lbs 27.1 1.2 19.1 2.7 21.9 2.3 7.1
100,000 lbs or more 48.1 0.2 48.9 2.7 47.1 2.3 31.8

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 43.2 44.1 38.1 13.4
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 32.8
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs 41.6 4.1 41.8 0.3 42.6 0.8 13.5
10,000 to 49,999 lbs 20.7 4.3 23.4 2.3 17.2 2.9 10.5
50,000 to 99,999 lbs 22.6 2.1 23.0 0.8 26.1 1.1 10.7
100,000 lbs or more S S 46.3 3.0 42.2 3.9 18.6

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 32.8 31.4 39.1 33.6
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
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 S S S S S S 31.6
100,000 lbs or more 33.2 2.9 31.5 39.2 0.2 24.4

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 37.2 34.7 39.5 26.3
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 31.6
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 38.2 10.4 34.7 10.5 39.5 10.5 24.3

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 S S S S S S 29.9
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
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 29.9

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 S
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
100,000 lbs or more S S S S S S 28.0

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 11.8 28.8 29.3 5.7
Less than 50 lbs 14.9 4.8 17.5 2.5 17.9 4.2 6.5
50 to 99 lbs 37.1 5.2 31.6 3.3 31.0 3.3 9.0
100 to 499 lbs 21.0 4.4 18.2 2.9 30.9 3.0 9.7
500 to 749 lbs S S 36.1 2.8 S S 24.3
750 to 999 lbs S S S S S S 30.0
1,000 to 9,999 lbs 35.4 4.4 37.8 7.8 39.2 9.0 19.4
10,000 to 49,999 lbs 35.9 0.7 S S S S 41.7
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 21.2 23.3 S S S
Less than 50 lbs 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 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 21.2 10.1 23.3 10.0 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 9.1 33.6 37.0 6.2
Less than 50 lbs 7.4 3.5 9.3 4.6 12.5 3.1 7.0
50 to 99 lbs 15.6 1.2 17.6 2.4 14.8 1.4 5.7
100 to 499 lbs 15.9 1.4 17.5 5.0 19.8 3.7 7.0
500 to 749 lbs S S 30.0 1.6 S S 18.8
750 to 999 lbs 41.2 0.2 S S S S 30.9
1,000 to 9,999 lbs S S 48.4 0.6 S S S
10,000 to 49,999 lbs 40.2 2.4 49.2 5.2 S S 7.7
50,000 to 99,999 lbs S S S S S S 21.8
100,000 lbs or more 39.8 0.1 S S 47.5 10.5 27.8

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 10.7 10.1 11.4 6.2
Less than 50 lbs 7.4 3.0 9.3 3.8 12.5 5.6 7.0
50 to 99 lbs 15.6 1.4 17.6 1.6 14.8 1.5 5.7
100 to 499 lbs 15.9 1.4 17.5 3.5 19.8 3.9 7.0
500 to 749 lbs S S 29.9 2.1 S S 18.7
750 to 999 lbs 41.2 0.2 S S S S 30.9
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

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 32.1 38.8 42.5 10.8
Less than 50 lbs
50 to 99 lbs
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 40.4
10,000 to 49,999 lbs 40.3 9.7 49.3 10.7 S S 7.7
50,000 to 99,999 lbs S S S S S S 22.2
100,000 lbs or more S S S S S S 30.2

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 49.3 44.2 47.9 24.7
Less than 50 lbs S S S S S S 29.8
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
1,000 to 9,999 lbs S S S S S S 30.4
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 S S S S S S 29.8
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 S S S S S S 29.8

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
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 32.5
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 30.8

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 26.2 29.0 42.4 18.5
Less than 50 lbs 36.4 3.3 38.9 0.2 S S S
50 to 99 lbs 45.8 0.8 37.2 38.4 47.8
100 to 499 lbs 33.8 2.9 44.7 0.5 S S S
500 to 749 lbs 33.6 1.0 S S S S S
750 to 999 lbs S S 48.6 0.2 44.4 0.1 S
1,000 to 9,999 lbs 44.6 10.7 46.3 8.8 S S 16.7
10,000 to 49,999 lbs 35.7 5.4 20.2 4.6 33.7 9.0 30.0
50,000 to 99,999 lbs 31.2 2.1 36.2 9.4 39.2 3.4 S
100,000 lbs or more S S 41.6 4.8 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.