California Department of Transportation

Last Updated: Thursday, December 3, 2015 2:04 PM



For conformity analysis, use ONLY EMFAC 2011 Links exit the Caltrans web site - privacy and other policies may differ as published by ARB.

For general environmental analysis purposes (not related to conformity), CT-EMFAC 2014 (based on EMFAC 2014) should be used.

Download CT-EMFAC 2014


  • Databridge tool (beta product) - consult the help file included in the zip file for usage instructions


CT-EMFAC was developed for Caltrans by UC Davis and Sonoma Technology Inc.
CT-EMFAC is copyright © 2007-2015 by the State of California.

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