When a transit agency is initiating a new vehicle Request for Proposals in 2007, are diesel vehicle engines required to meet the 2007 Federal Emission Standards? Is there any waiver or certification process for the manufacturer that would allow 2006 engines to be bid and used? A.
You should direct this question to the Federal agency having jurisdiction over the standards, which is the Environmental Protection Agency's Office of Transportation and Air Quality: http://www.epa.gov/otaq/
. (Revised: August 12, 2009)