Table 7c. Hazardous Material Shipment Characteristics by Hazard Class Division and Mode of Transportation: Percent of Total for 2007 and 2002

Tuesday, July 3, 2012

Estimates are based on data from the 2007 and 2002 Commodity Flow Surveys. Because of rounding, estimates may not be additive.

Division 1.1, Explosives with a mass explosion hazard

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Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	S	100	S	S	S	S	S	-	S	S	S	S
Single modes	S	97.5	S	S	S	S	S	1.0	S	S	S	S
Truck ²	S	97.5	S	S	S	S	S	1.0	S	S	S	S
For-hire truck	S	71.7	S	S	S	S	S	13.4	S	S	S	S
Private truck	S	S	S	S	S	S	S	S	S	S	S	S
Rail	S	-	S	-	S	-	S	-	S	-	S	-
Water	S	-	S	-	S	-	S	-	S	-	S	-
Deep draft	S	-	S	-	S	-	S	-	S	-	S	-
Air (includes truck and air)	S	-	S	-	S	-	S	-	S	-	S	-
Multiple modes	S	S	S	S	S	S	S	S	S	S	S	S
Parcel, U.S.P.S. or courier	S	S	S	S	S	S	S	S	S	S	S	S
Other and unknown modes	S	S	0.2	S	-	S	S	S	5.6	S	0.7	S

Division 1.2, Explosives with a projection hazard

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	S	S	S	S	S	S	S	S	S	S	S	S
Single modes	S	S	S	S	S	S	S	S	S	S	S	S
Truck ²	S	S	S	S	S	S	S	S	S	S	S	S
For-hire truck	S	S	S	S	S	S	S	S	S	S	S	S
Private truck	S	-	S	-	S	-	S	-	S	-	S	-

Division 1.3, Explosives with predominantly a fire hazard

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	S	100	100	100	100	-	S	-	-	-	-
Single modes	100.0	S	100.0	100.0	100.0	100.0	-	S	-	-	-	-
Truck ²	100.0	S	100.0	S	100.0	89.5	-	S	-	S	-	5.2
For-hire truck	45.5	S	S	S	83.6	S	17.9	S	S	S	15.2	S
Private truck	S	S	S	S	S	S	S	S	S	S	S	S
Multiple modes	S	-	S	-	S	-	S	-	S	-	S	-
Parcel, U.S.P.S. or courier	S	-	S	-	S	-	S	-	S	-	S	-

Division 1.4, Explosives with no significant blast hazard

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	100	100	100	100	100	-	-	-	-	-	-
Single modes	90.1	97.4	96.9	98.4	96.1	97.5	6.0	3.5	2.7	1.8	1.6	1.9
Truck ²	89.5	96.0	96.7	98.3	95.5	97.1	6.0	3.3	3.1	1.9	2.6	2.3
For-hire truck	79.5	87.6	82.7	94.6	90.2	95.4	6.4	3.9	5.2	2.7	2.5	2.7
Private truck	S	S	S	3.7	S	S	S	S	S	1.9	S	S
Air (includes truck and air)	S	S	S	-	S	S	S	S	S	0.3	S	S
Multiple modes	9.6	2.6	3.0	S	3.8	S	5.8	3.5	2.5	S	1.5	S
Parcel, U.S.P.S. or courier	8.2	2.6	2.6	S	3.4	S	3.6	3.5	1.7	S	1.2	S
Truck and water	S	-	S	-	S	-	S	-	S	-	S	-
Other and unknown modes	S	S	S	S	-	S	S	S	S	S	0.1	S

Division 1.5, Very insensitive explosives, blasting agent

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	100	100	100	100	100	-	-	-	-	-	-
Single modes	95.4	99.6	99.6	99.9	94.2	100.0	1.5	0.2	0.2	-	2.5	-
Truck ²	92.8	94.1	99.5	91.8	93.9	69.0	2.0	3.6	0.2	3.9	2.5	7
For-hire truck	35.0	15.2	13.6	22.2	49.0	36.8	5.6	5.5	5.4	9.2	5.7	9.3
Private truck	57.9	78.6	85.9	S	44.8	32.1	6.8	7.8	5.5	S	6.2	9.2
Air (includes truck and air)	2.6	S	0.1	S	S	S	1.3	S	0.1	S	S	S
Multiple modes	4.5	S	S	S	S	S	1.5	S	S	S	S	S
Parcel, U.S.P.S. or courier	3.5	S	-	S	S	S	1.6	S	-	S	S	S
Truck and water	1.0	-	S	-	S	-	2.0	-	S	-	S	-
Other and unknown modes	0.1	S	-	S	-	S	-	S	-	S	-	S

Division 2.1, Flammable gases

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	100	100	100	100	100	-	-	-	-	-	-
Single modes	96.9	99.2	98.3	99.4	95.6	98.8	0.8	0.4	0.5	0.2	1.2	0.5
Truck ²	39.2	42.5	35.6	36.0	13.8	24.0	3.7	5.3	3.5	6.3	2.9	4.5
For-hire truck	6.5	15.6	6.4	15.2	6.0	16.5	1.0	3.1	1.2	3.4	1.6	4.6
Private truck	32.7	26.9	29.2	20.8	7.8	7.4	3.9	5.1	3.5	6.1	1.7	2.1
Rail	17.4	19.0	18.9	18.6	62.4	59.2	4.5	2.8	4.5	3	4.5	4.3
Water	1.2	3.8	1.4	5.1	2.2	5.7	0.5	1.1	0.7	2.3	1.4	2.2
Shallow draft	0.4	-	0.4	-	S	-	0.4	-	0.5	-	S	-
Deep draft	0.8	-	1.1	-	S	-	0.7	-	1	-	S	-
Air (includes truck and air)	0.1	S	-	S	S	S	0.1	S	-	S	S	S
Pipeline ³	39.0	33.7	42.4	39.8	S	S	5.6	4.5	5.9	5.1	S	S
Multiple modes	2.7	0.3	1.4	0.4	S	1.2	0.8	0.2	0.5	0.2	S	0.5
Parcel, U.S.P.S. or courier	1.2	S	-	S	-	S	0.5	S	-	S	-	S
Truck and rail	S	-	S	-	S	-	S	-	S	-	S	-
Truck and water	S	-	S	-	S	-	S	-	S	-	S	-
Rail and water	0.5	-	0.5	-	0.4	-	0.9	-	1.1	-	0.9	-
Other multiple modes	S	0.2	S	0.4	S	1.2	S	-	S	0.2	S	0.5
Other and unknown modes	0.4	S	0.3	0.2	S	-	0.2	S	0.1	-	S	-

Division 2.2, Nonflammable, nontoxic compressed gases

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	100	100	100	100	100	-	-	-	-	-	-
Single modes	94.9	97.2	98.1	99.7	95.7	99.0	1.2	1.2	0.7	0.3	2.1	2.2
Truck ²	83.1	92.9	80.2	60.7	68.2	72.6	4.5	2.0	5.5	9.9	6.7	7.9
For-hire truck	32.5	49.0	13.3	6.9	36.7	23.7	5.1	8.2	3.1	6.8	7.9	9.8
Private truck	50.6	43.8	66.9	53.5	31.5	46.8	4.8	7.8	7.9	9.4	7.5	9.7
Rail	5.3	0.8	2.5	0.6	9.2	S	1.1	0.3	0.5	0.6	2.3	S
Water	S	S	S	S	S	S	S	S	S	S	S	S
Shallow draft	S	-	S	-	S	-	S	-	S	-	S	-
Air (includes truck and air)	S	0.7	S	S	S	S	S	0.2	S	S	S	S
Pipeline ³	5.5	S	15.1	S	S	S	4.2	S	4.6	S	S	S
Multiple modes	3.7	2.0	1.3	0.1	4.2	S	1.0	1.2	0.6	0.1	2	S
Parcel, U.S.P.S. or courier	1.2	1.7	S	S	-	-	0.4	1.2	S	S	-	-
Truck and rail	2.0	-	1.1	-	3.6	-	1.1	-	0.6	-	2.5	-
Truck and water	S	-	S	-	S	-	S	-	S	-	S	-
Other multiple modes	S	0.3	S	S	S	S	S	0.1	S	S	S	S
Other and unknown modes	1.3	0.8	0.6	0.2	0.1	S	0.4	0.2	0.3	0.1	0.1	S

Division 2.3, Gases toxic by inhalation

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	100	100	100	100	100	-	-	-	-	-	-
Single modes	95.5	98.5	99.3	98.7	99.7	99.5	1.5	0.4	0.6	0.7	0.3	0.2
Truck ²	60.8	70.6	S	51.2	S	27.5	6.6	7.4	S	6.2	S	6.1
For-hire truck	32.1	34.0	S	25.2	S	16.1	5.9	7.3	S	5.7	S	5.8
Private truck	28.7	36.6	20.8	25.9	7.8	S	4.0	7.0	2.9	4.5	1.9	S
Rail	26.2	16.8	40.8	24.8	61.9	52.2	6.2	4.9	7.7	5.9	7.8	7.9
Water	S	S	S	S	S	S	S	S	S	S	S	S
Shallow draft	S	-	S	-	S	-	S	-	S	-	S	-
Air (includes truck and air)	S	S	S	S	S	S	S	S	S	S	S	S
Pipeline ³	6.8	9.0	14.7	19.1	S	S	2.3	5.5	5.1	6.1	S	S
Multiple modes	S	S	S	S	S	S	S	S	S	S	S	S
Parcel, U.S.P.S. or courier	S	S	S	S	S	-	S	S	S	S	S	-
Truck and rail	S	-	S	-	S	-	S	-	S	-	S	-
Truck and water	S	-	S	-	S	-	S	-	S	-	S	-
Other and unknown modes	S	1.2	0.2	S	S	0.5	S	0.5	0.2	S	S	0.2

Division 4.1, Flammable solids

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	100	100	100	100	100	-	-	-	-	-	-
Single modes	75.4	86.3	95.6	99.7	96.9	99.5	7.6	6.2	2.5	0.2	1.9	0.5
Truck ²	44.5	73.4	50.7	54.8	19.6	16.4	11.0	9.4	7.3	6.4	8	5.9
For-hire truck	31.8	9.9	33.9	37.4	12.4	12.7	9.1	6.3	9	6.7	8	4.2
Private truck	12.7	63.4	16.8	17.5	S	3.7	5.5	10.6	3.3	4.4	S	2.8
Rail	S	S	20.2	30.3	65.6	67.8	S	S	5.4	5	11.2	7.5
Water	S	0.5	S	13.7	S	S	S	0.7	S	5.4	S	S
Shallow draft	S	-	S	-	S	-	S	-	S	-	S	-
Deep draft	S	-	S	-	S	-	S	-	S	-	S	-
Air (includes truck and air)	0.3	S	S	S	-	S	0.7	S	S	S	-	S
Pipeline ³	0.4	S	S	S	S	S	0.4	S	S	S	S	S
Multiple modes	S	S	S	S	S	S	S	S	S	S	S	S
Parcel, U.S.P.S. or courier	0.4	1.3	S	-	S	-	0.3	2.2	S	-	S	-
Truck and rail	S	-	S	-	S	-	S	-	S	-	S	-
Truck and water	S	-	S	-	S	-	S	-	S	-	S	-
Other multiple modes	S	S	S	S	S	S	S	S	S	S	S	S
Other and unknown modes	S	S	S	S	S	S	S	S	S	S	S	S

Division 4.2, Spontaneously combustible materials

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	100	100	100	S	100	-	-	-	-	S	-
Single modes	80.7	94.7	86.6	98.9	S	97.3	7.1	1.5	5.9	1.1	S	2.8
Truck ²	79.6	84.0	85.7	66.5	S	S	7.1	3.9	6	9.7	S	S
For-hire truck	73.2	S	35.3	59.4	S	S	10.8	S	12.3	10.8	S	S
Private truck	6.4	25.6	S	7.0	S	S	14.5	9.9	S	9	S	S
Rail	S	10.5	S	S	S	47.5	S	2.9	S	S	S	13.1
Water	-	-	-	-	-	-	-	-	-	-	-	-
Air (includes truck and air)	S	S	S	S	S	S	S	S	S	S	S	S
Pipeline ³	-	-	-	-	-	S	-	-	-	-	-	S
Multiple modes	S	5.2	S	0.7	S	S	S	1.5	S	1.1	S	S
Parcel, U.S.P.S. or courier	S	5.2	S	0.6	S	S	S	1.5	S	1.1	S	S
Truck and rail	S	-	S	-	S	-	S	-	S	-	S	-
Other multiple modes	-	S	-	S	-	S	-	S	-	S	-	S
Other and unknown modes	S	S	S	S	S	S	S	S	S	S	S	S

Division 4.3, Dangerous when wet materials

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	S	100	100	100	S	-	S	-	-	-	S
Single modes	95.5	S	97.4	95.4	87.1	S	2.4	S	2.5	5.8	5.1	S
Truck ²	74.3	S	90.0	90.0	61.0	S	7.0	S	7.8	7	14	S
For-hire truck	48.6	S	50.8	S	S	S	10.1	S	11.5	S	S	S
Private truck	25.8	11.3	39.1	35.3	S	S	10.6	9.1	12.5	10.8	S	S
Rail	20.3	S	S	S	S	S	14.0	S	S	S	S	S
Water	-	-	-	-	-	-	-	-	-	-	-	-
Air (includes truck and air)	S	S	S	S	-	S	S	S	S	S	-	S
Pipeline ³	-	-	-	-	-	S	-	-	-	-	-	S
Multiple modes	S	3.8	S	S	S	S	S	3.3	S	S	S	S
Parcel, U.S.P.S. or courier	S	S	S	S	S	S	S	S	S	S	S	S
Truck and rail	S	-	S	-	S	-	S	-	S	-	S	-
Other multiple modes	-	S	-	S	-	S	-	S	-	S	-	S
Other and unknown modes	0.1	S	0.1	S	-	S	0.7	S	0.9	S	1.1	S

Division 5.1, Oxidizers

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	100	100	100	100	100	-	-	-	-	-	-
Single modes	92.9	97.1	92.7	96.9	89.2	94.5	2.9	2.0	3.4	1.7	5.9	2.4
Truck ²	62.2	81.1	51.9	76.2	30.7	60.5	4.7	5.2	5.6	6.6	6.7	8.5
For-hire truck	33.9	36.1	29.6	50.1	24.0	S	3.2	7.5	2.7	8.4	5	S
Private truck	28.3	44.8	22.4	25.7	6.7	7.3	3.9	7.7	5.2	6.2	3.3	2.7
Rail	29.0	16.0	40.1	20.6	58.5	34.0	4.3	5.2	5.6	6.5	7.6	8.8
Water	S	-	S	-	S	-	S	-	S	-	S	-
Deep draft	S	-	S	-	S	-	S	-	S	-	S	-
Air (includes truck and air)	1.1	S	-	-	S	S	0.6	S	-	-	S	S
Pipeline ³	S	-	S	-	S	S	S	-	S	-	S	S
Multiple modes	6.1	1.8	6.5	S	9.7	S	2.8	1.8	3.3	S	5.9	S
Parcel, U.S.P.S. or courier	0.8	S	-	S	-	S	0.6	S	-	S	-	S
Truck and rail	4.7	-	6.4	-	8.9	-	2.6	-	3.6	-	6.7	-
Truck and water	S	-	S	-	S	-	S	-	S	-	S	-
Other multiple modes	-	1.6	-	S	-	S	-	1.9	-	S	-	S
Other and unknown modes	S	S	S	S	S	S	S	S	S	S	S	S

Division 5.2, Organic peroxides

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	100	100	S	100	S	-	-	-	S	-	S
Single modes	97.5	99.5	97.7	S	94.4	S	3.5	1.2	4.1	S	7.6	S
Truck ²	97.5	S	97.7	S	94.4	S	3.5	S	4.1	S	7.6	S
For-hire truck	82.8	S	88.9	S	90.9	S	7.3	S	5.2	S	8	S
Private truck	14.7	S	S	1.5	S	0.4	6.0	S	S	14.5	S	11.8
Rail	-	S	-	S	-	S	-	S	-	S	-	S
Water	-	-	-	-	-	-	-	-	-	-	-	-
Air (includes truck and air)	S	S	S	S	S	S	S	S	S	S	S	S
Pipeline ³	-	-	-	-	-	S	-	-	-	-	-	S
Multiple modes	S	S	S	S	S	S	S	S	S	S	S	S
Parcel, U.S.P.S. or courier	S	S	S	S	S	S	S	S	S	S	S	S
Truck and rail	S	-	S	-	S	-	S	-	S	-	S	-
Other multiple modes	-	-	-	-	-	-	-	-	-	-	-	-
Other and unknown modes	S	S	S	S	S	S	S	S	S	S	S	S

Division 6.1, Toxic (poisonous) materials

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	100	-	100	-	100	-	-	-	-	-	-	-
Single modes	94.8	-	92.7	-	98.0	-	1.2	-	2.2	-	1	-
Truck ²	47.8	-	26.2	-	15.0	-	5.5	-	4.6	-	3.7	-
For-hire truck	41.0	-	21.4	-	13.7	-	5.0	-	4.1	-	3.2	-
Private Truck	6.8	-	4.8	-	1.3	-	3.6	-	1.3	-	0.7	-
Rail	32.0	-	47.5	-	80.8	-	5.5	-	9.3	-	5.3	-
Water	S	-	16.4	-	S	-	S	-	13.5	-	S	-
Shallow draft	S	-	S	-	S	-	S	-	S	-	S	-
Deep draft	S	-	S	-	0.4	-	S	-	S	-	1.6	-
Air (includes truck and air)	0.2	-	-	-	S	-	0.1	-	-	-	S	-
Pipeline ³	S	-	2.6	-	S	-	S	-	1.7	-	S	-
Multiple modes	5.0	-	7.2	-	2.0	-	1.2	-	2.2	-	1	-
Parcel, U.S.P.S. or courier	S	-	S	-	-	-	S	-	S	-	-	-
Truck and rail	0.2	-	0.3	-	0.3	-	0.5	-	0.4	-	0.3	-
Truck and water	-	-	-	-	-	-	0.2	-	0.1	-	-	-
Rail and water	0.1	-	0.1	-	0.1	-	0.4	-	0.4	-	0.2	-
Other multiple modes	S	-	6.8	-	1.5	-	S	-	2.9	-	1.7	-
Other and unknown modes	0.1	-	S	-	-	-	0.1	-	S	-	-	-

Division 6.2, Infectious substances

Hazard Class Division and Mode of Transportation	Value (percent)		Tons (percent)		Ton-miles (percent) ¹		Value Standard Error of %		Tons Standard Error of %		Ton-miles Standard Error of %
Hazard Class Division and Mode of Transportation	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002	2007	2002
All modes	S	-	S	-	S	-	S	-	S	-	S	-
Single modes	S	-	S	-	S	-	S	-	S	-	S	-
Truck ²	S	-	S	-	S	-	S	-	S	-	S	-
Private Truck	S	-	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 Ton-miles estimates are based on estimated distances traveled along a modeled transportation network.
² "Truck" as a single mode includes shipments that were made by only private truck, only for-hire truck, or a combination of private and for-hire truck.
³ Estimates for Pipeline exclude shipments of crude petroleum.

NOTES: Rows are not shown if all cells for that particular row have no values. For example, specific Haz Class Division by mode rows are not shown in this table because there are no data for those rows. Value-of-shipment estimates are reported in current prices. 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/.

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.

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Table 7c. Hazardous Material Shipment Characteristics by Hazard Class Division and Mode of Transportation: Percent of Total for 2007 and 2002