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Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for State of Origin: 2002

Monday, July 2, 2012

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]

Excel | CSV

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 4.0 – 9.6 – 5.8 – 8.4
Less than 50 lbs 8.7 1.5 9.7 – 12.2 0.1 6.5
50 to 99 lbs 23.0 1.2 12.7 – 15.9 0.1 8.3
100 to 499 lbs 5.3 0.6 13.5 0.2 14.6 0.3 10.1
500 to 749 lbs 5.4 0.2 19.2 0.2 13.5 0.1 12.1
750 to 999 lbs 9.5 0.3 23.0 0.2 11.7 – 17.7
1,000 to 9,999 lbs 6.9 1.3 9.9 1.1 14.8 1.9 13.2
10,000 to 49,999 lbs 10.5 2.1 14.3 2.2 10.0 2.7 16.2
50,000 to 99,999 lbs 9.0 0.4 16.6 2.1 12.1 1.6 11.4
100,000 lbs or more 12.4 0.6 9.4 3.4 15.5 3.3 14.0

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 4.8 – 9.9 – 4.9 – 23.5
Less than 50 lbs 9.6 0.8 9.5 – 16.2 – 22.1
50 to 99 lbs 36.0 1.4 11.8 – 22.3 – 17.0
100 to 499 lbs 7.8 0.9 14.6 0.2 15.9 0.2 13.4
500 to 749 lbs 6.4 0.3 20.6 0.2 13.6 0.1 10.9
750 to 999 lbs 9.8 0.4 23.9 0.2 13.2 0.1 18.1
1,000 to 9,999 lbs 7.4 1.6 9.6 1.1 15.7 1.9 13.8
10,000 to 49,999 lbs 10.8 2.3 14.7 2.2 9.4 2.8 17.2
50,000 to 99,999 lbs 9.2 0.6 16.9 2.2 12.5 1.7 11.4
100,000 lbs or more 12.8 0.8 10.1 3.5 10.3 2.6 14.7

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 4.9 – 12.4 – 6.7 – 22.6
Less than 50 lbs 10.0 0.7 10.0 – 19.6 – 36.6
50 to 99 lbs 42.6 1.6 11.5 – 23.1 – 23.6
100 to 499 lbs 9.6 1.0 14.6 0.3 16.9 0.2 14.0
500 to 749 lbs 7.4 0.3 20.7 0.2 14.2 0.2 10.6
750 to 999 lbs 11.5 0.4 24.1 0.2 14.3 0.1 17.6
1,000 to 9,999 lbs 7.2 1.6 9.6 1.3 15.6 2.0 13.9
10,000 to 49,999 lbs 10.8 2.8 14.8 2.1 9.7 3.3 17.7
50,000 to 99,999 lbs 9.5 0.7 17.0 1.9 12.9 2.4 11.5
100,000 lbs or more 15.7 0.4 18.4 2.4 22.1 2.1 29.7

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 9.2 – 16.5 – 6.0 – 9.2
Less than 50 lbs 14.0 0.7 14.8 – 21.5 – 8.8
50 to 99 lbs S S 21.8 – 23.7 – 14.1
100 to 499 lbs 7.4 0.8 12.5 0.1 14.0 0.3 17.8
500 to 749 lbs 12.7 0.6 11.8 – 11.9 0.1 10.6
750 to 999 lbs 13.9 0.6 17.1 – 13.1 0.1 12.2
1,000 to 9,999 lbs 10.1 2.1 10.2 1.0 12.5 2.0 7.7
10,000 to 49,999 lbs 12.0 2.1 15.8 2.2 11.0 3.8 14.4
50,000 to 99,999 lbs 11.4 0.7 25.7 3.4 19.5 2.8 15.9
100,000 lbs or more 22.0 0.5 22.0 2.9 26.9 2.2 31.3

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 6.2 – 13.9 – 20.5 – 29.5
Less than 50 lbs 13.0 0.9 12.6 – 19.3 – S
50 to 99 lbs 5.9 0.2 15.1 – 25.7 – 34.8
100 to 499 lbs 14.4 1.6 19.2 0.4 25.2 0.5 19.8
500 to 749 lbs 18.4 0.7 25.6 0.3 30.3 0.4 8.2
750 to 999 lbs 16.3 0.6 29.7 0.3 28.3 0.3 30.9
1,000 to 9,999 lbs 6.7 1.9 13.5 1.6 34.1 2.9 31.5
10,000 to 49,999 lbs 18.7 3.8 17.5 2.9 24.2 2.2 32.8
50,000 to 99,999 lbs 10.9 0.9 18.6 2.4 11.0 2.9 16.2
100,000 lbs or more 23.3 0.5 27.3 2.8 30.3 2.3 37.2

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 23.6 – 23.1 – 14.0 – 8.7
Less than 50 lbs S S S S S S 30.4
50 to 99 lbs S S S S S S 28.8
100 to 499 lbs S S S S S S 26.7
500 to 749 lbs S S S S S S 33.9
750 to 999 lbs S S S S S S 42.5
1,000 to 9,999 lbs S S S S S S 18.1
10,000 to 49,999 lbs 33.1 4.0 34.3 2.9 36.5 5.0 3.9
50,000 to 99,999 lbs 43.6 1.3 39.3 0.9 41.9 0.6 36.2
100,000 lbs or more 26.5 8.2 23.9 3.8 15.2 5.7 11.0

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 43.0 – 39.2 – S S 13.2
Less than 50 lbs S S S S S S 28.6
50 to 99 lbs S S S S S S 27.9
100 to 499 lbs S S 41.5 1.4 41.7 1.4 23.6
500 to 749 lbs S S S S S S 28.1
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs S S S S S S 23.6
10,000 to 49,999 lbs 45.6 15.4 30.0 19.3 26.2 19.5 18.7
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 48.8 18.8 S S S S 38.6

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 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 – – – – – – –
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 27.2

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 48.8 – S S 14.4
Less than 50 lbs S S S S S S 29.0
50 to 99 lbs S S S S S S 27.9
100 to 499 lbs S S 41.5 1.4 41.7 1.4 23.6
500 to 749 lbs S S S S S S 28.1
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs S S S S S S 23.6
10,000 to 49,999 lbs 45.6 18.4 S S S S 18.7
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 33.3

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 15.0 – 41.4 – 23.2 – 5.7
Less than 50 lbs 17.3 5.3 26.3 4.3 28.7 4.5 5.5
50 to 99 lbs 31.7 2.3 38.0 2.3 46.6 3.3 11.7
100 to 499 lbs 26.0 2.5 15.6 3.7 18.1 3.4 7.5
500 to 749 lbs 43.6 1.7 21.8 1.7 24.9 1.4 13.1
750 to 999 lbs 40.4 1.6 S S S S 9.1
1,000 to 9,999 lbs 29.3 2.5 23.1 7.5 24.8 6.2 11.0
10,000 to 49,999 lbs S S 44.9 4.6 S S 23.3
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S S S S S S

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 18.8 – 18.4 – S S S
Less than 50 lbs S S S S S S S
50 to 99 lbs S S S S 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 40.2 0.4 43.9 0.6 S S S
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more 18.3 1.8 18.6 1.3 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 7.6 – 18.5 – 24.6 – 5.6
Less than 50 lbs 9.4 2.5 11.0 3.6 14.1 2.9 5.9
50 to 99 lbs 10.8 1.0 15.8 2.0 16.2 1.4 4.8
100 to 499 lbs 14.8 1.8 12.2 2.6 15.8 2.6 4.8
500 to 749 lbs 17.8 0.7 19.4 1.1 30.2 0.8 22.1
750 to 999 lbs 43.7 1.1 40.7 1.3 16.3 0.3 25.3
1,000 to 9,999 lbs S S S S S S 7.9
10,000 to 49,999 lbs 18.7 0.3 29.8 6.2 29.2 6.4 2.2
50,000 to 99,999 lbs 42.5 – 47.6 2.7 S S S
100,000 lbs or more 46.4 0.2 47.9 10.0 S S 23.5

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 7.5 – 9.8 – 13.5 – 5.6
Less than 50 lbs 9.4 2.4 11.0 2.3 14.1 2.3 5.9
50 to 99 lbs 10.8 1.1 15.8 1.3 16.2 0.7 4.9
100 to 499 lbs 14.8 1.9 12.3 1.7 15.9 2.2 4.8
500 to 749 lbs 18.3 0.7 20.3 1.8 29.6 1.5 23.7
750 to 999 lbs 44.4 1.1 44.4 1.8 24.2 0.9 27.7
1,000 to 9,999 lbs S S S S S S 31.5
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 21.2 – 28.5 – 31.5 – 6.5
Less than 50 lbs S S S S S S 28.1
50 to 99 lbs S S S S S S 38.0
100 to 499 lbs S S S S S S 21.2
500 to 749 lbs S S S S S S 25.6
750 to 999 lbs S S S S S S 26.0
1,000 to 9,999 lbs 46.1 2.1 S S S S 7.5
10,000 to 49,999 lbs 23.2 5.4 36.6 10.1 35.5 6.3 2.3
50,000 to 99,999 lbs 23.6 0.5 S S 39.6 0.6 S
100,000 lbs or more S S S S S S 22.3

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 37.7 – S S S S 1.9
Less than 50 lbs S S S S S S 10.7
50 to 99 lbs 45.0 0.3 42.3 – 42.6 – 21.3
100 to 499 lbs 35.9 6.4 30.8 0.8 30.6 0.8 3.3
500 to 749 lbs 40.3 2.8 S S S S 17.6
750 to 999 lbs 46.1 0.6 S S S S 18.9
1,000 to 9,999 lbs S S 42.7 6.2 43.1 6.6 2.1
10,000 to 49,999 lbs 30.8 9.2 S S S S 1.9
50,000 to 99,999 lbs S S S S S S 25.9
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 S S S S S S 30.0
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 – – – – – – –
10,000 to 49,999 lbs – – – – – – –
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S S S S S 30.0

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 34.2
Less than 50 lbs S S S S S S 34.0
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 – – – – – – –
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 11.2 – 29.8 – 12.8 – 18.0
Less than 50 lbs 22.3 5.1 25.7 0.8 31.7 0.2 22.4
50 to 99 lbs 19.1 0.9 27.7 0.6 23.0 0.1 S
100 to 499 lbs 17.3 1.8 17.3 1.0 44.8 0.8 26.6
500 to 749 lbs 28.7 0.3 32.8 0.7 47.0 0.3 40.2
750 to 999 lbs S S 31.9 0.2 S S S
1,000 to 9,999 lbs 15.3 5.6 34.1 5.9 16.8 6.2 38.4
10,000 to 49,999 lbs 39.6 4.1 30.8 6.5 20.1 5.7 43.6
50,000 to 99,999 lbs 26.8 0.5 31.3 5.8 29.4 2.0 S
100,000 lbs or more 24.5 0.5 S S 46.6 7.6 34.4

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.