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General

Legacy ID
201

Box 3-B: Hydraulic Fracturing and U.S. Oil and Gas Production

The technique of hydraulic fracturing (also known as fracking) has been widely used to increase domestic oil and gas production in the United States. The process involves injecting a water solution deep into the bedrock formation using a well. Pressure from the water creates cracks in the...

Box 3-A The Commodity Flow Survey and the Freight Analysis Framework

The Commodity Flow Survey (CFS) is conducted every 5 years by the Bureau of Transportation Statistics (BTS) in partnership with the U.S. Census Bureau as part of the Economic Census. The CFS provides data for most of the U.S. economy on commodities shipped, their value and weight, mode of...

Box 2-B Transportation and Health

Transportation and public health interact in several ways, such as in the areas of public safety and exposure of the public to air pollution. Chapters 6 and 7 indicate improvement in some critical indicators of transportation’s health impacts over the last several decades, but...