BTS | Table 1-56: U.S. Hazardous Materials Shipments by Transportation Mode, 1997

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Table 1-56: U.S. Hazardous Materials Shipments by Transportation Mode, 1997

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Transportation mode	Value		Tons		Ton-miles
Transportation mode	($ billion)	Percent	(millions)	Percent	(billions)	Percent
TOTAL all modes	466.4	100.0	1,565.2	100.0	263.8	100.0
Single modes, total	452.7	97.1	1,541.7	98.5	258.9	98.1
Truck^a	298.2	63.9	869.8	55.6	74.9	28.4
For-hire	134.3	28.8	336.4	21.5	45.2	17.1
Private^b	160.7	34.5	522.7	33.4	28.8	10.9
Rail	33.3	7.1	96.6	6.2	74.7	28.3
Water	27.0	5.8	143.2	9.1	68.2	25.9
Air	8.6	1.8	0.1	-	0.1	-
Pipeline^c	85.7	18.4	432.1	27.6	S	S
Multiple modes, total	5.7	1.2	6.0	0.4	3.1	1.2
Parcel, U.S. Postal Service or Courier	2.9	0.6	0.1	-	0.1	-
Other	2.9	0.6	5.9	0.4	3.0	1.1
Unknown and other modes, total	7.9	1.7	17.5	1.1	1.8	0.7

KEY: - = less than 1 unit of measure or equal to zero; S = data are not published because of high sampling variability or other reasons.

^aTruck as a single mode includes shipments that went by private truck only, for-hire truck only, or a combination of both.

^bPrivate truck refers to a truck operated by a temporary or permanent employee of an establishment or the buyer/receiver of the shipment.

^cExcludes most shipments of crude oil. See previous table for the estimated amount of crude oil and petroleum products transported in the United States.

NOTE

Numbers may not add to totals due to roundings.

SOURCE

U.S. Department of Transportation, Bureau of Transportation Statistics, U.S. Department of Commerce, Census Bureau, 1997 Economic Census, Transportation, 1997 Commodity Flow Survey, Hazardous Materials (Washington, DC: December 1999), table 1.