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

[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]

All modes

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	18.9	–	11.5	–	28.1	–	8.9
Less than 50 lbs	21.2	1.9	9.8	0.1	19.5	0.7	7.6
50 to 99 lbs	28.9	0.5	18.9	0.1	12.6	0.2	18.9
100 to 499 lbs	22.3	1.0	10.0	0.4	12.6	0.9	10.4
500 to 749 lbs	11.5	0.5	13.4	0.2	11.3	0.4	8.4
750 to 999 lbs	21.8	0.9	11.5	0.2	6.3	0.3	16.9
1,000 to 9,999 lbs	24.9	1.8	13.8	1.5	10.5	2.7	14.3
10,000 to 49,999 lbs	21.5	3.8	18.7	3.5	11.2	5.8	18.0
50,000 to 99,999 lbs	21.5	0.4	13.4	3.2	14.9	1.3	8.7
100,000 lbs or more	44.5	0.6	S	S	S	S	34.1

Single modes

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	20.9	–	11.8	–	30.0	–	11.7
Less than 50 lbs	38.6	1.4	18.3	–	19.0	–	25.6
50 to 99 lbs	28.1	0.5	26.2	0.1	14.0	–	19.7
100 to 499 lbs	25.3	1.4	11.6	0.4	16.3	0.9	8.2
500 to 749 lbs	12.1	0.6	14.0	0.2	12.7	0.4	8.9
750 to 999 lbs	22.4	1.0	11.4	0.2	8.4	0.3	12.6
1,000 to 9,999 lbs	25.6	2.0	14.2	1.5	10.4	3.1	12.3
10,000 to 49,999 lbs	22.2	4.3	19.1	3.6	10.7	6.4	20.4
50,000 to 99,999 lbs	24.4	0.6	13.4	3.3	17.6	1.5	9.0
100,000 lbs or more	47.1	0.9	S	S	S	S	33.7

Truck

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	19.2	–	11.4	–	26.5	–	9.0
Less than 50 lbs	30.8	1.0	18.8	–	21.6	–	18.1
50 to 99 lbs	15.9	0.5	26.4	0.1	14.5	–	21.7
100 to 499 lbs	22.1	1.3	11.5	0.4	15.6	0.8	8.1
500 to 749 lbs	11.7	0.6	14.0	0.2	12.4	0.4	8.7
750 to 999 lbs	23.1	0.9	11.4	0.2	8.6	0.2	12.6
1,000 to 9,999 lbs	25.9	2.3	14.3	1.8	10.4	2.9	12.4
10,000 to 49,999 lbs	22.3	4.3	19.2	3.4	10.6	6.0	20.8
50,000 to 99,999 lbs	24.4	0.6	13.4	3.2	17.7	1.5	9.0
100,000 lbs or more	44.4	0.8	45.6	2.7	S	S	S

For-hire truck

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	20.9	–	13.8	–	32.6	–	10.6
Less than 50 lbs	45.6	1.8	18.8	–	27.3	0.1	27.1
50 to 99 lbs	17.6	0.5	16.4	–	16.6	0.1	11.4
100 to 499 lbs	34.4	1.7	14.6	0.4	17.2	0.9	12.9
500 to 749 lbs	15.7	0.7	9.9	0.1	13.0	0.5	11.1
750 to 999 lbs	32.9	1.8	16.3	0.1	9.4	0.3	15.8
1,000 to 9,999 lbs	12.3	3.4	14.4	1.7	13.7	3.4	13.1
10,000 to 49,999 lbs	32.9	5.8	10.8	5.7	12.7	7.0	11.7
50,000 to 99,999 lbs	35.1	0.9	26.5	6.9	24.2	1.6	S
100,000 lbs or more	S	S	S	S	S	S	29.3

Private truck

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	9.3	–	12.3	–	6.4	–	13.5
Less than 50 lbs	23.8	1.4	20.8	–	16.7	–	40.9
50 to 99 lbs	19.6	0.8	29.0	0.2	21.9	–	18.5
100 to 499 lbs	15.6	1.3	13.0	0.4	26.2	1.1	16.2
500 to 749 lbs	17.7	0.5	17.9	0.3	35.0	0.9	21.6
750 to 999 lbs	14.4	0.3	12.9	0.2	9.4	–	11.2
1,000 to 9,999 lbs	10.1	2.6	15.9	3.3	8.3	2.2	22.2
10,000 to 49,999 lbs	14.0	3.2	27.6	4.8	13.0	4.3	21.8
50,000 to 99,999 lbs	24.7	0.6	14.8	4.1	15.5	1.9	9.2
100,000 lbs or more	33.5	0.9	25.5	1.9	34.7	1.9	S

Rail

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	S	S	S	S	S	S	33.5
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	29.0
10,000 to 49,999 lbs	47.3	14.5	41.5	19.2	40.0	18.5	24.9
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	29.3

Water

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
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	S	S	S	S	S	S	31.6
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	–	–	–	–	–	–	–

Shallow draft

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
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	S	S	S	S	S	S	31.6
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	–	–	–	–	–	–	–

Great Lakes

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
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
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
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	–	–	–	–	–	–	–
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
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	S	S	30.5	–	49.4	–	5.8
Less than 50 lbs	S	S	42.2	4.7	43.0	5.7	4.5
50 to 99 lbs	S	S	S	S	S	S	12.2
100 to 499 lbs	S	S	47.1	6.6	S	S	12.0
500 to 749 lbs	S	S	45.8	1.7	S	S	25.6
750 to 999 lbs	S	S	S	S	44.6	2.7	46.3
1,000 to 9,999 lbs	S	S	S	S	S	S	19.9
10,000 to 49,999 lbs	S	S	S	S	S	S	29.8
50,000 to 99,999 lbs	–	–	–	–	–	–	–
100,000 lbs or more	–	–	–	–	–	–	–

Pipeline

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
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
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	18.5	–	26.1	–	28.1	–	5.0
Less than 50 lbs	16.0	2.4	16.7	5.2	21.5	5.8	4.5
50 to 99 lbs	33.3	1.6	14.2	2.3	17.1	2.1	10.0
100 to 499 lbs	19.5	0.7	41.9	4.8	15.2	5.9	31.6
500 to 749 lbs	46.2	1.0	35.0	1.2	19.4	0.9	39.5
750 to 999 lbs	49.7	1.1	27.1	0.4	48.9	1.1	24.2
1,000 to 9,999 lbs	35.2	–	S	S	38.3	0.6	S
10,000 to 49,999 lbs	S	S	S	S	S	S	31.0
50,000 to 99,999 lbs	–	–	–	–	–	–	–
100,000 lbs or more	S	S	S	S	S	S	30.3

Parcel, USPS or courier

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	18.9	–	28.5	–	14.7	–	5.0
Less than 50 lbs	16.0	2.4	16.7	5.5	21.5	5.0	4.5
50 to 99 lbs	33.3	1.6	14.2	2.2	17.1	1.6	10.0
100 to 499 lbs	19.5	0.6	41.9	4.4	15.2	4.8	31.6
500 to 749 lbs	46.3	1.0	35.2	1.1	21.2	0.6	36.1
750 to 999 lbs	49.7	1.1	27.1	0.4	48.9	1.1	24.2
1,000 to 9,999 lbs	S	S	S	S	S	S	S
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
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	S	S	S	S	S	S	29.9
Less than 50 lbs	S	S	S	S	S	S	31.6
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	45.2
10,000 to 49,999 lbs	S	S	S	S	S	S	31.0
50,000 to 99,999 lbs	–	–	–	–	–	–	–
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
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	S	S	S	S	S	S	29.8
Less than 50 lbs	S	S	S	S	S	S	31.6
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	–	–	–	–	–	–	–
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

Rail and water

Shipment Weight	Value		Tons		Ton-miles		CV of average miles per shipment
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
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
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	S	S	S	S	S	S	34.3
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	–	–	–	–	–	–	–
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
Shipment Weight	CV	Std. error of percent	CV	Std. error of percent	CV	Std. error of percent	CV of average miles per shipment
All shipment sizes	16.9	–	17.6	–	35.1	–	38.8
Less than 50 lbs	23.7	4.9	42.4	1.6	S	S	41.3
50 to 99 lbs	45.7	1.5	41.4	1.1	S	S	48.9
100 to 499 lbs	33.0	3.7	36.5	2.9	33.6	3.5	25.3
500 to 749 lbs	S	S	33.5	0.2	39.2	2.7	48.3
750 to 999 lbs	S	S	S	S	S	S	24.1
1,000 to 9,999 lbs	27.0	7.9	22.0	7.8	36.2	7.5	38.3
10,000 to 49,999 lbs	33.2	3.9	24.0	8.8	39.5	7.5	S
50,000 to 99,999 lbs	S	S	S	S	S	S	S
100,000 lbs or more	S	S	S	S	S	S	31.3

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.

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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