For example, it is estimated an operator of a semi truck could pay for the technology upgrades in under a year, and save as much as $74,000 over the truck’s useful life. Vehicles with lower annual miles would typically experience longer payback periods, up to four or five years, but would still reap cost-savings.

The innovative technologies fostered by this program would also yield economic benefits, enhance energy security, and improve air quality. New technologies include widespread use of aerodynamic improvements and tire rolling resistance, as well as engine and transmission upgrades.

EPA and NHTSA are providing a 60-day comment period that begins when the proposal is published in the Federal Register. The proposal and information about how to submit comments is at: http://www.epa.gov/otaq/climate/regulations.htm and http://www.nhtsa.gov/fuel-economy .

As part of the process of developing this proposed rulemaking, NHTSA has prepared a Draft Environmental Impact Statement (EIS) for its proposed fuel efficiency standards.

The Draft EIS compares the environmental impacts of the agency’s proposal with those of a number of regulatory alternatives.

Comments may be submitted on the Draft EIS through Jan. 3, 2011, and information on the submission of comments for this document may be found at the NHTSA Web address listed above.