Table 4. Shipment Characteristics by Mode of Transportation and Shipment Size for Metropolitan Area of Origin: 2007

Estimates are based on data from the 2007 Commodity Flow Survey. Because of rounding, estimates may not be additive.

Excel | CSV

All Modes

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	85,038	100	126,964	100	34,124	100	727	7.0	-	16.3	-	27.0	-	7.4
Less than 50 lbs	12,042	14.2	143	0.1	104	0.3	896	12.3	2.0	17.1	-	20.9	0.1	5.3
50 - 99 lbs	1,394	1.6	123	0.1	49	0.1	369	14.3	0.2	17.6	-	25.3	0.1	19.7
100 - 499 lbs	4,334	5.1	694	0.5	294	0.9	431	9.2	0.5	21.3	0.1	44.1	0.6	13.7
500 - 749 lbs	1,474	1.7	347	0.3	118	0.3	341	7.9	0.2	20.1	0.1	43.3	0.2	15.1
750 - 999 lbs	1,458	1.7	369	0.3	108	0.3	287	10.0	0.1	20.4	-	36.2	0.2	16.4
1,000 - 9,999 lbs	14,654	17.2	3,996	3.1	1,205	3.5	294	6.6	1.1	12.4	0.4	10.1	0.8	9.6
10,000 - 49,999 lbs	43,666	51.3	56,599	44.6	10,711	31.4	203	9.6	2.2	12.2	4.4	12.2	5.8	9.8
50,000 - 99,999 lbs	2,463	2.9	15,770	12.4	1,622	4.8	100	13.4	0.3	18.6	2.8	21.6	1.7	13.3
More than 100,000 lbs	3,553	4.2	48,922	38.5	19,913	58.4	439	35.0	1.0	38.6	6.5	43.0	8.0	11.0

Single modes

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	71,406	100	125,210	100	33,203	100	372	8.6	-	16.6	-	28.0	-	15.9
Less than 50 lbs	1,286	1.8	50	-	21	0.1	587	23.4	0.4	25.0	-	42.2	-	18.5
50 - 99 lbs	587	0.8	94	0.1	28	0.1	277	16.0	0.1	23.8	-	44.9	0.1	34.4
100 - 499 lbs	3,251	4.6	634	0.5	S	S	388	9.2	0.4	23.4	0.1	S	S	17.4
500 - 749 lbs	1,356	1.9	338	0.3	113	0.3	334	7.3	0.3	20.6	0.1	45.1	0.2	15.5
750 - 999 lbs	1,449	2.0	365	0.3	107	0.3	288	10.0	0.2	20.6	-	36.4	0.2	16.4
1,000 - 9,999 lbs	14,484	20.3	3,948	3.2	1,186	3.6	291	6.8	1.4	12.4	0.4	10.3	0.9	9.6
10,000 - 49,999 lbs	43,189	60.5	56,319	45.0	10,507	31.6	201	9.8	1.6	12.2	4.5	12.2	6.3	9.8
50,000 - 99,999 lbs	2,437	3.4	15,508	12.4	1,546	4.7	97	13.4	0.4	18.8	2.9	22.1	1.9	13.1
More than 100,000 lbs	3,365	4.7	47,953	38.3	19,446	58.6	426	37.3	1.1	39.6	6.7	44.4	8.7	10.5

Truck⁴

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	68,022	100	79,196	100	14,010	100	351	7.4	-	11.0	-	9.8	-	16.9
Less than 50 lbs	1,082	1.6	48	0.1	18	0.1	520	29.1	0.5	26.5	-	48.9	0.1	21.0
50 - 99 lbs	571	0.8	93	0.1	27	0.2	269	17.0	0.1	24.1	-	46.6	0.1	35.5
100 - 499 lbs	3,229	4.7	634	0.8	S	S	388	9.5	0.5	23.4	0.2	S	S	17.4
500 - 749 lbs	1,347	2.0	338	0.4	112	0.8	333	7.4	0.3	20.6	0.1	45.3	0.4	15.5
750 - 999 lbs	1,447	2.1	365	0.5	107	0.8	288	10.0	0.2	20.6	0.1	36.5	0.3	16.4
1,000 - 9,999 lbs	14,295	21.0	3,943	5.0	1,183	8.4	291	6.3	1.4	12.4	0.4	10.3	0.5	9.6
10,000 - 49,999 lbs	43,141	63.4	56,280	71.1	10,479	74.8	200	9.9	1.8	12.2	3.1	12.2	3.4	9.8
50,000 - 99,999 lbs	2,424	3.6	15,474	19.5	1,521	10.9	96	13.5	0.4	18.9	2.8	22.9	2.3	13.6
More than 100,000 lbs	485	0.7	2,022	2.6	313	2.2	304	27.4	0.2	41.6	0.8	39.5	1.0	24.0

For-hire truck

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	46,851	100	40,353	100	10,900	100	739	11.7	-	12.6	-	12.4	-	9.3
Less than 50 lbs	617	1.3	S	S	S	S	990	46.6	0.7	S	S	S	S	11.9
50 - 99 lbs	209	0.4	S	S	S	S	839	34.1	0.2	S	S	S	S	13.1
100 - 499 lbs	1,642	3.5	S	S	S	S	817	15.4	0.5	S	S	S	S	5.7
500 - 749 lbs	739	1.6	124	0.3	S	S	771	12.6	0.3	46.7	0.1	S	S	5.5
750 - 999 lbs	828	1.8	107	0.3	85	0.8	785	13.8	0.2	39.5	0.1	44.3	0.4	7.7
1,000 - 9,999 lbs	9,943	21.2	1,522	3.8	943	8.7	669	12.5	1.9	8.3	0.5	8.3	0.7	5.2
10,000 - 49,999 lbs	31,015	66.2	30,287	75.1	8,481	77.8	312	15.3	2.9	15.1	3.7	16.6	4.4	9.6
50,000 - 99,999 lbs	1,469	3.1	6,749	16.7	797	7.3	111	16.5	0.3	24.7	3.0	26.1	2.1	48.8
More than 100,000 lbs	388	0.8	S	S	S	S	702	36.7	0.4	S	S	S	S	23.3

Private truck

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	21,171	100	38,844	100	3,110	100	70	13.3	-	12.0	-	11.6	-	11.3
Less than 50 lbs	465	2.2	28	0.1	1	-	52	15.1	0.3	32.5	-	24.0	-	16.9
50 - 99 lbs	362	1.7	66	0.2	4	0.1	62	20.2	0.5	32.9	0.1	43.2	0.1	16.8
100 - 499 lbs	1,587	7.5	360	0.9	25	0.8	67	14.2	1.2	10.2	0.2	24.8	0.2	15.3
500 - 749 lbs	609	2.9	213	0.5	17	0.5	80	15.8	0.6	11.5	0.1	20.9	0.1	13.2
750 - 999 lbs	619	2.9	258	0.7	22	0.7	84	25.4	0.9	22.5	0.1	35.1	0.3	12.2
1,000 - 9,999 lbs	4,352	20.6	2,421	6.2	240	7.7	93	13.2	3.6	16.0	0.6	24.0	1.6	10.9
10,000 - 49,999 lbs	12,126	57.3	25,993	66.9	1,999	64.3	76	24.8	6.7	13.8	4.4	14.6	5.5	14.3
50,000 - 99,999 lbs	955	4.5	8,725	22.5	724	23.3	83	31.0	1.4	27.2	4.5	26.5	5.0	11.4
More than 100,000 lbs	97	0.5	780	2.0	S	S	90	37.9	0.3	39.0	1.2	S	S	40.7

Rail

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	2,910	100	45,930	100	19,171	100	488	43.2	-	41.7	-	45.2	-	11.8
Less than 50 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
50 - 99 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
100 - 499 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
500 - 749 lbs	S	S	S	S	S	S	S	S	S	S	S	S	S	S
750 - 999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1,000 - 9,999 lbs	S	S	S	S	S	S	S	S	S	S	S	S	S	S
10,000 - 49,999 lbs	S	S	39	0.1	S	S	606	S	S	36.9	0.4	S	S	31.8
50,000 - 99,999 lbs	14	0.5	34	0.1	S	S	718	49.1	2.5	40.3	0.6	S	S	30.8
More than 100,000 lbs	2,856	98.1	45,855	99.8	19,118	99.7	478	44.3	5.9	41.8	0.3	45.4	0.3	12.8

Water

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	25	100	77	100	15	100	167	27.9	-	20.1	-	44.8	-	30.9
Less than 50 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
50 - 99 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
100 - 499 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
500 - 749 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750 - 999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1,000 - 9,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
10,000 - 49,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
50,000 - 99,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
More than 100,000 lbs	25	100.0	77	100.0	15	100.0	167	27.9	-	20.1	-	44.8	-	30.9

Deep draft

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	25	100	77	100	15	100	167	27.9	-	20.1	-	44.8	-	30.9
Less than 50 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
50 - 99 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
100 - 499 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
500 - 749 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750 - 999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1,000 - 9,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
10,000 - 49,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
50,000 - 99,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
More than 100,000 lbs	25	100.0	77	100.0	15	100.0	167	27.9	-	20.1	-	44.8	-	30.9

Air (incl truck and air)

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	450	100	6	100	7	100	1,718	34.4	-	23.4	-	26.5	-	17.9
Less than 50 lbs	204	45.2	2	32.3	3	35.5	1,741	42.1	13.7	43.7	12.7	43.2	13.5	20.8
50 - 99 lbs	16	3.6	1	9.0	S	S	1,449	44.9	5.4	45.2	8.2	S	S	27.7
100 - 499 lbs	S	S	-	3.3	-	3.0	930	S	S	30.4	6.8	33.5	7.9	30.4
500 - 749 lbs	S	S	-	1.9	S	S	S	S	S	4.9	5.9	S	S	S
750 - 999 lbs	S	S	S	S	-	1.8	S	S	S	S	S	42.1	2.8	S
1,000 - 9,999 lbs	S	S	3	44.3	S	S	1,001	S	S	21.9	14.5	S	S	13.1
10,000 - 49,999 lbs	S	S	1	8.2	1	7.8	1,063	S	S	49.6	15.4	18.3	16.4	49.2
50,000 - 99,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
More than 100,000 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Multiple modes

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	12,687	100	1,308	100	614	100	949	11.8	-	34.8	-	32.9	-	4.7
Less than 50 lbs	10,623	83.7	92	7.0	83	13.5	954	14.5	3.5	15.6	5.9	16.5	5.9	4.9
50 - 99 lbs	786	6.2	28	2.2	21	3.4	740	25.5	1.6	26.8	3.4	24.3	2.6	5.7
100 - 499 lbs	1,000	7.9	51	3.9	45	7.3	911	14.8	2.3	19.7	2.6	18.9	2.4	6.9
500 - 749 lbs	110	0.9	8	0.6	6	0.9	673	26.8	0.5	26.5	0.3	28.5	0.5	26.7
750 - 999 lbs	S	S	2	0.1	S	S	341	S	S	37.2	0.3	S	S	44.5
1,000 - 9,999 lbs	S	S	2	0.2	1	0.2	S	S	S	44.9	0.3	30.1	0.4	S
10,000 - 49,999 lbs	84	0.7	S	S	70	11.4	1,068	38.1	0.4	S	S	37.6	7.1	45.8
50,000 - 99,999 lbs	3	-	173	13.2	69	11.2	399	37.4	0.1	37.5	8.0	38.0	11.4	8.1
More than 100,000 lbs	59	0.5	885	67.6	S	S	373	21.6	0.2	44.1	8.1	S	S	16.2

Parcel, U.S.P.S. or courier

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	12,518	100	181	100	154	100	949	12.0	-	9.9	-	11.0	-	4.7
Less than 50 lbs	10,623	84.9	92	50.7	83	53.9	954	14.5	3.3	15.6	4.4	16.5	4.1	4.9
50 - 99 lbs	786	6.3	28	15.6	21	13.5	740	25.5	1.7	26.8	4.4	24.3	3.7	5.7
100 - 499 lbs	1,000	8.0	51	28.3	45	29.1	911	14.8	2.4	19.7	4.6	18.9	4.5	6.9
500 - 749 lbs	105	0.8	8	4.4	5	3.1	599	27.9	0.5	28.7	1.8	25.7	1.3	28.4
750 - 999 lbs	S	S	2	0.9	S	S	341	S	S	37.2	0.4	S	S	44.5
1,000 - 9,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
10,000 - 49,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
50,000 - 99,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
More than 100,000 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Truck and rail

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	118	100	1,042	100	428	100	545	29.1	-	43.2	-	47.7	-	45.1
Less than 50 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
50 - 99 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
100 - 499 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
500 - 749 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750 - 999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1,000 - 9,999 lbs	S	S	-	-	S	S	S	S	S	11.5	4.8	S	S	S
10,000 - 49,999 lbs	66	55.9	30	2.9	54	12.7	1,548	48.9	7.3	36.6	13.3	29.8	14.4	32.2
50,000 - 99,999 lbs	3	3.0	173	16.6	69	16.1	399	37.4	10.4	37.5	9.6	38.0	16.4	8.1
More than 100,000 lbs	44	37.5	838	80.4	S	S	373	25.5	10.5	45.7	4.8	S	S	18.1

Truck and water

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	44	100	S	S	S	S	1,039	29.9	-	S	S	S	S	31.5
Less than 50 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
50 - 99 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
100 - 499 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
500 - 749 lbs	S	S	S	S	S	S	S	S	S	S	S	S	S	S
750 - 999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1,000 - 9,999 lbs	S	S	S	S	S	S	280	S	S	S	S	S	S	40.6
10,000 - 49,999 lbs	S	S	S	S	S	S	S	S	S	S	S	S	S	S
50,000 - 99,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
More than 100,000 lbs	S	S	S	S	S	S	S	S	S	S	S	S	S	S

Rail and water

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	S	S	S	S	S	S	S	S	S	S	S	S	S	S
Less than 50 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
50 - 99 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
100 - 499 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
500 - 749 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
750 - 999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1,000 - 9,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
10,000 - 49,999 lbs	S	S	S	S	S	S	S	S	S	S	S	S	S	S
50,000 - 99,999 lbs	-	-	-	-	-	-	-	-	-	-	-	-	-	-
More than 100,000 lbs	S	S	S	S	S	S	S	S	S	S	S	S	S	S

Other and unknown modes

Shipment Weight	Value		Tons		Ton-miles2		Average miles per shipment	Value		Tons		Ton-miles		Average miles per shipment CV
	2007 (million $)	Percent of total	2007 (thousands)	Percent of total	2007 (millions)	Percent of total		CV3	Standard Error of %	CV	Standard Error of %	CV	Standard Error of %
Total	944	100	446	100	S	S	74	26.5	-	47.6	-	S	S	40.5
Less than 50 lbs	133	14.1	2	0.3	-	-	S	44.9	11.5	38.9	1.3	36.5	0.1	S
50 - 99 lbs	20	2.1	1	0.3	-	-	S	46.5	1.8	47.1	1.4	35.4	-	S
100 - 499 lbs	82	8.7	9	1.9	-	0.1	18	38.6	9.1	21.5	3.1	26.1	0.5	17.5
500 - 749 lbs	S	S	1	0.3	-	-	S	S	S	38.8	0.6	43.3	-	S
750 - 999 lbs	4	0.4	2	0.4	-	-	S	29.4	1.0	39.0	0.5	44.5	0.1	S
1,000 - 9,999 lbs	152	16.0	46	10.4	18	5.9	525	26.2	5.1	36.3	10.6	20.8	16.8	23.0
10,000 - 49,999 lbs	393	41.6	212	47.5	S	S	534	31.1	9.9	37.4	9.7	S	S	30.2
50,000 - 99,999 lbs	22	2.4	89	20.0	S	S	84	31.3	1.5	45.8	4.4	S	S	25.5
More than 100,000 lbs	129	13.7	S	S	S	S	S	10.0	16.1	S	S	S	S	S

KEY: S = Estimate does not meet publication standards because of high sampling variability or poor response quality. - = Zero or Less than half the unit shown; thus, it has been rounded to zero.

¹ Commodity Flow Survey (CFS) geographic areas were drawn from a subset of Combined Statistical Areas (CSAs) and Metropolitan Statistical Areas (MeSAs) as defined by the Office of Management and Budget (OMB). However, CFS metropolitan areas are divided into their state parts when they include more than one state. In addition, the CFS also utilizes a unique geography referred to as, "remainder of state," to represent those areas of a state not contained within a separately published metropolitan area for the CFS (as opposed to not part of any Core-Based Statistical Area (CBSA) as defined by OMB). Because of the differences in the CFS geography, as compared to OMB defined geography, caution should be exercised when comparing CFS estimates to other estimates of similar geography.
² Ton-miles estimates are based on estimated distances traveled along a modeled transportation network.
³ Coefficient of Variation.
⁴ ""Truck"" as a single mode includes any shipment that was made by private truck only, by for-hire truck only, or by a combination of private and for-hire truck.
⁵ Estimates for pipeline exclude shipments of crude petroleum.

NOTES: Value-of-shipment estimates are reported in current prices. Estimated measures of sampling variability for each estimate known as coefficients of variation (CV) are also provided in these tables. More information on sampling error, confidentiality protection, nonsampling error, sample design, and definitions may be found at http://www.bts.gov/publications/commodity_flow_survey/
Rows are not shown if all cells for that particular mode have no data. For example, since Denver-Aurora-Boulder by "Water" has no data for any shipment weight group, the entire mode of "Water" for that area was removed from this table. However, if a mode has at least one row of data for one of the shipment weight groups, then the entire mode is shown even though there may be rows absent of data within that mode. For example, Denver-Aurora-Boulder by "Other and unknown modes" has a row absent of data for the shipment size of "More than 100,000 lbs" but does have data for the other shipment weight groups under that mode so it will be shown in its entirety.

SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2007 Economic Census: Transportation Commodity Flow Survey, December 2009.