This report explores the current methods used to generate air emissions information from all freight transportation activities and their suitability for purposes such as health and climate risk assessments, prioritization of emission reduction activities, and public education.

The primary focus of this report is on the consequences of climate change for the infrastructure and operations of U.S. transportation. The report provides transportation professionals with an overview of the scientific consensus on those current and future climate changes of particular relevance to U.S. transportation, including the limitations of present scientific

The use of biodiesel, made primarily from soybeans and other organic products, merits serious consideration as an alternative fuel. As dependency on foreign oil escalates, use of any energy source that is both renewable and made domestically deser ves further investigation. Biodiesel also provides a positive environmental effect, has no real handling or infrastructure