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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 11.9 – 34.5 – 23.4 – 22.9
Less than 50 lbs 14.8 2.0 18.2 – 21.7 0.1 26.9
50 to 99 lbs 24.7 0.6 21.7 – 25.2 0.1 34.5
100 to 499 lbs 21.2 1.6 21.4 – 24.3 0.2 22.4
500 to 749 lbs 10.0 0.3 26.6 – 12.3 0.1 31.7
750 to 999 lbs 16.0 0.3 28.3 – 20.0 – 24.1
1,000 to 9,999 lbs 10.6 1.5 15.1 0.7 10.4 0.7 15.9
10,000 to 49,999 lbs 29.3 5.5 31.8 5.7 31.1 7.0 49.6
50,000 to 99,999 lbs 29.1 1.5 19.9 5.3 S S S
100,000 lbs or more 21.5 6.1 49.0 11.2 30.5 14.0 29.3

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 14.4 – 35.3 – 27.2 – 22.7
Less than 50 lbs 23.4 2.1 18.5 – 28.7 0.2 27.7
50 to 99 lbs 27.4 0.6 19.6 – 34.7 0.2 38.8
100 to 499 lbs 24.5 1.8 20.2 – 25.1 0.3 30.2
500 to 749 lbs 11.0 0.4 29.7 – 21.2 0.2 46.1
750 to 999 lbs 18.4 0.3 29.4 – 27.4 0.1 34.4
1,000 to 9,999 lbs 9.0 1.9 15.5 0.8 13.0 3.8 14.0
10,000 to 49,999 lbs 35.9 5.9 33.1 5.7 43.3 9.1 20.5
50,000 to 99,999 lbs 33.5 1.6 22.8 5.2 38.2 4.8 30.8
100,000 lbs or more 21.8 6.9 49.2 11.1 30.8 15.3 28.5

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 18.6 – 27.8 – 31.5 – 17.0
Less than 50 lbs 25.4 2.2 19.2 – 24.7 0.2 21.2
50 to 99 lbs 28.1 0.6 21.5 – 29.6 0.2 22.6
100 to 499 lbs 21.2 2.1 20.5 0.2 30.4 1.3 23.6
500 to 749 lbs 10.7 0.5 30.5 0.1 27.4 0.4 S
750 to 999 lbs 19.1 0.5 29.8 0.1 21.3 0.3 32.9
1,000 to 9,999 lbs 10.3 2.9 16.0 1.8 19.3 4.4 17.4
10,000 to 49,999 lbs 37.2 6.3 33.7 3.3 S S 17.8
50,000 to 99,999 lbs 30.1 1.8 22.4 4.2 35.8 6.5 39.4
100,000 lbs or more 31.5 3.8 39.3 6.9 S S S

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 24.7 – 21.8 – 36.0 – 15.5
Less than 50 lbs 45.5 0.8 23.3 – 21.1 – 20.9
50 to 99 lbs S S 31.5 – 31.8 0.1 16.2
100 to 499 lbs 41.3 3.8 19.5 0.3 30.0 1.1 21.6
500 to 749 lbs 27.8 0.8 22.3 0.2 40.6 0.7 28.3
750 to 999 lbs 12.3 0.5 19.3 0.4 26.2 0.8 31.4
1,000 to 9,999 lbs 15.0 4.1 23.0 2.6 29.4 7.5 16.0
10,000 to 49,999 lbs 36.8 6.5 43.1 7.5 S S 20.5
50,000 to 99,999 lbs 40.0 3.8 29.1 8.3 42.8 9.0 32.6
100,000 lbs or more 46.1 9.0 48.2 11.6 S S 32.1

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 17.1 – 37.8 – 27.9 – 19.8
Less than 50 lbs 24.6 3.4 19.9 0.1 26.6 0.2 45.4
50 to 99 lbs 22.3 1.0 22.1 0.1 23.7 0.1 17.1
100 to 499 lbs 12.3 2.1 21.7 0.9 31.7 1.4 17.9
500 to 749 lbs 15.2 0.6 34.8 0.3 38.1 0.5 46.1
750 to 999 lbs 23.8 1.0 33.0 0.3 36.7 0.5 43.6
1,000 to 9,999 lbs 14.2 3.0 19.6 3.6 21.9 2.6 26.1
10,000 to 49,999 lbs S S 30.8 8.0 22.8 6.7 34.5
50,000 to 99,999 lbs 26.2 2.1 36.5 4.2 22.4 5.2 S
100,000 lbs or more S S S S S S 28.7

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 40.0 – S S 36.6 – 22.8
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 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 31.6
10,000 to 49,999 lbs S S S S S S 29.8
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 41.6 7.4 S S 36.8 1.3 23.6

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 22.8 – 48.7 – S S 35.1
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs 47.9 0.1 S S S S 30.1
100 to 499 lbs 26.9 2.8 S S S S 28.2
500 to 749 lbs 49.4 1.8 49.8 0.3 S S 31.7
750 to 999 lbs S S S S S S S
1,000 to 9,999 lbs S S 48.7 6.9 S S S
10,000 to 49,999 lbs 33.0 11.2 45.5 16.4 S S S
50,000 to 99,999 lbs S S S S S S 27.9
100,000 lbs or more 42.0 12.9 S S S S 34.4

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 45.1 – S S S S S
Less than 50 lbs S S S S S S 27.9
50 to 99 lbs S S S S S S 29.8
100 to 499 lbs S S S S S S 30.0
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs S S S S S S 32.4
1,000 to 9,999 lbs S S S S S S 46.8
10,000 to 49,999 lbs S S S S 46.3 16.5 S
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 30.3

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 – – – – – – –
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 23.4 – S S S S 26.7
Less than 50 lbs S S S S S S 30.9
50 to 99 lbs S S S S S S 30.0
100 to 499 lbs 33.0 3.6 S S S S 22.2
500 to 749 lbs S S S S S S 30.8
750 to 999 lbs S S S S S S 38.2
1,000 to 9,999 lbs S S S S S S 34.7
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 28.3
100,000 lbs or more 42.1 15.5 S S S S 30.3

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 25.6 – 19.5 – 21.0 – 13.4
Less than 50 lbs 32.1 5.0 24.7 0.9 33.7 1.4 25.2
50 to 99 lbs S S 38.2 1.9 S S 16.5
100 to 499 lbs S S 24.2 9.3 25.8 9.2 16.6
500 to 749 lbs 36.9 1.1 34.0 0.9 37.0 1.3 19.4
750 to 999 lbs 34.7 1.6 34.1 1.3 41.6 2.6 21.5
1,000 to 9,999 lbs 25.3 8.3 20.1 9.0 22.3 10.0 14.2
10,000 to 49,999 lbs 43.4 1.0 S S S S 26.2
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 44.4 – 43.0 – 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
100,000 lbs or more 44.3 – 43.0 – 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 26.0 – S S S S 12.9
Less than 50 lbs 23.0 5.7 13.6 1.5 18.1 1.0 11.1
50 to 99 lbs 40.0 2.8 22.5 0.8 22.3 0.6 24.9
100 to 499 lbs 32.3 5.8 37.5 2.4 48.8 3.4 12.9
500 to 749 lbs 24.6 0.7 28.5 1.7 33.5 1.7 24.0
750 to 999 lbs S S 40.9 2.0 43.6 0.4 28.4
1,000 to 9,999 lbs S S 32.5 2.3 33.6 3.9 20.0
10,000 to 49,999 lbs 36.2 8.4 35.8 10.8 45.1 11.2 20.9
50,000 to 99,999 lbs S S S S S S 19.9
100,000 lbs or more S S S S S S 27.9

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 17.4 – 19.4 – 38.4 – 15.3
Less than 50 lbs 23.2 6.9 14.5 6.1 20.1 8.1 12.1
50 to 99 lbs 32.7 2.2 24.8 2.9 26.2 2.4 24.9
100 to 499 lbs 33.7 6.5 38.3 6.5 S S 19.8
500 to 749 lbs 24.9 1.6 32.7 5.0 42.2 6.8 27.9
750 to 999 lbs 37.9 1.2 38.9 5.0 S S 39.6
1,000 to 9,999 lbs S S S S S S 32.0
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 31.6
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 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 – – – – – – –

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 32.2 – S S S S 7.7
Less than 50 lbs S S 44.6 0.1 47.6 0.2 11.5
50 to 99 lbs S S S S S S 22.1
100 to 499 lbs 34.3 3.9 42.0 0.9 37.6 1.1 14.2
500 to 749 lbs 48.8 0.7 43.5 0.2 45.7 0.3 24.0
750 to 999 lbs S S S S S S 27.3
1,000 to 9,999 lbs 48.3 3.7 35.6 4.4 33.9 6.1 11.7
10,000 to 49,999 lbs 36.2 8.3 35.8 13.1 45.1 13.2 20.9
50,000 to 99,999 lbs S S S S S S 19.9
100,000 lbs or more S S S S S S 29.8

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 – – – – – – –
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S S S S S 31.6

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 30.3
Less than 50 lbs S S S S S S 30.3
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 21.6 – S S 28.2 – S
Less than 50 lbs 38.0 5.5 36.3 1.0 33.9 3.3 S
50 to 99 lbs 35.2 2.5 49.2 0.6 46.9 2.1 S
100 to 499 lbs 33.5 4.1 45.6 2.3 S S S
500 to 749 lbs S S 41.5 1.7 S S S
750 to 999 lbs S S S S S S 37.5
1,000 to 9,999 lbs 26.9 6.8 19.2 10.7 21.0 11.4 27.6
10,000 to 49,999 lbs S S S S S S 39.5
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more S S S S S S 31.6

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.