|Mode of transportation||Value||Tons||Ton-milesa||Average miles
|Air (includes truck and air)||1,735||0.1||S||S||S||S||1,095|
|Parcel, USPS, or courier||7,675||0.5||236||Z||151||Z||836|
|Truck and rail||7,052||0.5||11,706||0.5||10,120||3.1||779|
|Truck and water||23,451||1.6||36,588||1.6||12,380||3.8||1,010|
|Rail and water||5,153||0.4||5,742||0.3||2,937||0.9||1,506|
|Other multiple modes||27,739||1.9||56,750||2.5||17,297||5.3||233|
|Other and unknown modes||6,534||0.5||8,489||0.4||1,466||0.5||58|
KEY: S = estimate does not meet publication
standards because of high sampling variability or poor response
Z = less than half the unit shown. Represents an estimate that is between zero and half the unit shown, thus, has rounded down to zero.
aTon-miles estimates are based on estimated distances
traveled along a modeled transportation network.
bTruck 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.
cPipeline estimates exclude shipments of crude petroleum.
NOTES: Value-of-shipment estimates are reported in current prices. Estimates are based on data from the 2007 Commodity Flow Survey. Details may not add to totals due to rounding. More information on sampling error, confidentiality protection, nonsampling error, sample design, and definitions may be found at http://www.bts.gov/cfs.
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.