|Transportation mode||Value||Tons||Ton-miles||Average miles per shipment|
|TOTAL all modes||1,448.2||100.0||2,231.1||100.0||323.5||100.0||96|
|Single modes, total||1,370.6||94.6||2,111.6||94.6||279.1||86.3||65|
|Multiple modes, total||71.1||4.9||111.0||5.0||42.9||13.3||834|
|Parcel, U.S. Postal Service or Courier||7.7||0.5||0.2||-||0.2||-||836|
|Unknown and other modes, total||6.5||0.5||8.5||0.4||1.5||0.5||58|
KEY: - = less than 1 unit of measure or equal to zero; S = data are not published because of high sampling variability or other reasons.
a Truck as a single mode includes shipments that went by private truck only, for-hire truck only, or a combination of both.
b Private truck refers to a truck operated by a temporary or permanent employee of an establishment or the buyer/receiver of the shipment.
c Excludes 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 rounding.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, U.S. Department of Commerce, Census Bureau, 2007 Commodity Flow Survey, Hazardous Materials (Washington, DC: December 2009), table CF0700H01, available at http://factfinder.census.gov/servlet/IBQTable?_bm=y&-geo_id=&-ds_name=CF0700H01&-_lang=en as of Mar. 9, 2010.