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 3.6 12.4 7.1 9.2
Less than 50 lbs 11.2 0.9 10.3 11.1 10.3
50 to 99 lbs 11.9 0.3 12.5 12.1 13.2
100 to 499 lbs 9.1 0.7 12.8 0.2 8.5 0.1 13.7
500 to 749 lbs 9.5 0.3 10.1 10.2 12.2
750 to 999 lbs 19.7 0.5 13.6 9.8 10.6
1,000 to 9,999 lbs 10.3 1.7 11.8 0.9 11.5 1.2 7.3
10,000 to 49,999 lbs 6.2 2.4 14.7 2.8 9.5 3.3 11.7
50,000 to 99,999 lbs 16.3 0.6 19.2 2.5 19.1 1.2 22.8
100,000 lbs or more 6.9 0.2 14.4 1.5 19.9 3.6 7.8

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 4.3 12.1 7.5 9.4
Less than 50 lbs 23.5 0.7 12.3 14.4 28.3
50 to 99 lbs 16.0 0.2 15.6 10.7 15.7
100 to 499 lbs 11.7 0.8 13.7 0.2 10.4 0.1 13.8
500 to 749 lbs 10.7 0.3 10.4 11.2 11.9
750 to 999 lbs 21.3 0.5 13.8 13.9 12.0
1,000 to 9,999 lbs 10.8 1.7 11.7 0.9 11.7 1.2 6.6
10,000 to 49,999 lbs 6.1 2.7 14.3 2.9 9.7 3.4 11.3
50,000 to 99,999 lbs 16.5 0.7 17.9 2.4 19.3 1.2 21.9
100,000 lbs or more 6.9 0.2 15.4 1.5 20.7 3.8 7.6

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 4.7 12.6 9.4 9.0
Less than 50 lbs 15.1 0.4 13.5 17.9 25.1
50 to 99 lbs 8.6 0.1 15.5 8.1 17.9
100 to 499 lbs 8.6 0.7 13.7 0.2 10.1 0.2 14.1
500 to 749 lbs 10.9 0.4 10.5 11.7 11.9
750 to 999 lbs 21.8 0.6 13.9 14.1 0.1 11.8
1,000 to 9,999 lbs 11.5 2.3 11.8 1.0 11.9 1.7 6.8
10,000 to 49,999 lbs 7.9 3.0 14.4 3.0 10.1 3.2 11.7
50,000 to 99,999 lbs 16.8 0.7 18.0 2.6 20.8 1.5 24.1
100,000 lbs or more 21.0 0.1 37.0 1.4 S S 34.4

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 5.0 10.7 12.5 8.0
Less than 50 lbs 23.4 0.4 18.4 23.2 17.4
50 to 99 lbs 17.0 0.2 19.5 13.7 15.1
100 to 499 lbs 15.9 0.9 17.5 0.1 15.3 0.2 9.4
500 to 749 lbs 16.7 0.6 19.2 14.1 0.1 10.8
750 to 999 lbs 27.8 0.9 20.1 19.2 0.1 9.3
1,000 to 9,999 lbs 16.6 3.0 15.4 0.9 14.2 2.1 9.6
10,000 to 49,999 lbs 7.6 3.9 12.4 3.0 13.4 3.9 9.0
50,000 to 99,999 lbs 17.4 0.7 17.0 2.3 28.1 1.8 17.2
100,000 lbs or more 30.3 0.2 S S S S 25.6

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 8.3 16.4 11.8 10.1
Less than 50 lbs 16.0 0.8 18.5 19.7 13.3
50 to 99 lbs 13.4 0.2 18.9 19.4 15.4
100 to 499 lbs 19.9 1.8 20.7 0.3 17.9 0.3 16.5
500 to 749 lbs 19.6 0.8 20.9 0.1 23.5 0.1 17.4
750 to 999 lbs 9.9 0.2 16.0 0.1 18.1 0.1 22.2
1,000 to 9,999 lbs 10.0 2.7 12.0 1.7 11.3 1.7 12.1
10,000 to 49,999 lbs 14.9 3.4 21.1 5.5 11.6 2.6 18.9
50,000 to 99,999 lbs 29.8 1.3 27.3 5.1 24.0 1.7 33.8
100,000 lbs or more 31.9 0.2 43.8 0.6 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 17.3 15.7 15.1 8.6
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 39.7
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 41.2
10,000 to 49,999 lbs 33.3 11.1 18.0 1.7 23.4 2.4 15.2
50,000 to 99,999 lbs 26.2 1.1 38.7 0.8 36.5 0.8 10.3
100,000 lbs or more 10.1 10.3 16.0 2.1 16.1 2.4 6.9

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 S S S S S S 32.1
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 S S S S S S 33.3
100,000 lbs or more S S S S S S 30.9

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 31.7
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
50,000 to 99,999 lbs S S S S S S 35.9
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 S S S S S S 30.4
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 S S S S S S 31.6
100,000 lbs or more S S S S S S 30.9

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 42.6 43.2 17.9
Less than 50 lbs S S 39.9 3.6 34.9 6.8 20.4
50 to 99 lbs S S 39.5 1.8 S S 17.2
100 to 499 lbs S S 29.5 10.2 37.9 9.1 13.4
500 to 749 lbs S S 47.1 3.7 S S 17.2
750 to 999 lbs S S S S S S 26.7
1,000 to 9,999 lbs S S S S S S 21.7
10,000 to 49,999 lbs S S S S S S 26.8
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 46.2 46.7 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 S S S S
1,000 to 9,999 lbs 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
100,000 lbs or more S S 47.3 1.1 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 13.6 27.7 16.1 7.2
Less than 50 lbs 16.5 2.7 13.9 5.9 13.7 4.8 7.2
50 to 99 lbs 20.3 2.3 19.3 2.3 19.4 2.3 10.3
100 to 499 lbs 15.1 2.0 15.3 2.9 6.9 1.9 14.4
500 to 749 lbs 37.6 0.5 32.0 0.9 22.7 0.3 21.6
750 to 999 lbs S S 34.7 0.7 S S 36.8
1,000 to 9,999 lbs 23.5 29.2 0.6 37.9 1.8 36.6
10,000 to 49,999 lbs 31.5 1.3 27.0 7.6 27.2 9.5 12.1
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 30.4

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 14.6 11.4 11.0 7.2
Less than 50 lbs 16.5 2.8 13.9 4.1 13.7 3.4 7.1
50 to 99 lbs 20.3 2.3 19.3 2.1 19.4 1.8 10.3
100 to 499 lbs 15.1 2.1 15.3 3.5 6.8 2.3 14.5
500 to 749 lbs 37.7 0.5 32.0 2.4 23.5 1.4 19.7
750 to 999 lbs S S 41.3 1.2 44.6 1.5 24.3
1,000 to 9,999 lbs S S S S S S 30.3
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 29.4 47.6 27.9 14.1
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 38.2 5.6 37.0 4.1 44.1 3.8 27.0
10,000 to 49,999 lbs 32.2 9.7 27.5 16.4 28.2 11.3 13.5
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 30.4

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 47.5 S S 48.5 18.7
Less than 50 lbs S S S S S S 29.8
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs S S S S S S 28.4
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 50.0 12.3 S S S S 26.3
10,000 to 49,999 lbs S S S S S S 31.3
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 S S S S S S 30.5
Less than 50 lbs S S S S S S 30.5
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 21.4 47.2 20.0 39.6
Less than 50 lbs 45.9 3.1 41.6 0.3 34.5 S
50 to 99 lbs S S S S 48.7 0.3 S
100 to 499 lbs 48.2 2.7 S S 39.7 0.6 S
500 to 749 lbs 47.9 0.4 S S S S S
750 to 999 lbs 45.3 0.6 S S 29.7 0.2 S
1,000 to 9,999 lbs 29.6 6.8 35.9 5.7 26.9 5.7 24.3
10,000 to 49,999 lbs 37.8 7.9 42.9 6.2 21.1 4.9 S
50,000 to 99,999 lbs 38.4 0.4 S S S S S
100,000 lbs or more S S 45.7 2.3 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.