MSEI - On-Road Archives | California Air Resources Board

diesel trucks parked in a row

MSEI - On-Road Archives

Archived technical documentation and support memos:

Updating Vehicle Miles Traveled and Speed Distributions in EMFAC 2007	November 13, 2006 September 12, 2006 July 20, 2006
Revision Of Heavy Heavy-Duty Diesel Truck Emission Factors And Speed Correction Factors	October 20, 2006 (Original Document) October 20, 2006 (Amendment)
Increased Evaporative Emissions From On-Road Motor Vehicles Due To Ethanol Permeation	November 7, 2006 November 1, 2005

Previous versions of the EMFAC Model and their support documents/materials:

EMFAC2011	EMFAC2011 Release Document EMFAC2011 User's Guides: LDV, HD, SG, PL EMFAC2011 Technical Documentation, PL Handbook EMFAC2011 Software Installation Packages: LDV, HD, SG, PL EMFAC2011 Idling Emission Rates
EMFAC2007	Software User's Guide Technical Memos and Support Documents EMFAC2007 population update Corrections to heavy-duty gas cap benefits Updating vehicle miles traveled and speed distributions in EMFAC2007 November 13, 2006 September 12, 2006 July 20, 2006 Redistribution of heavy-heavy duty diesel truck vehicle miles traveled in California Coding modifcations to evaporative emissions algorithms Revision of heavy-heavy duty diesel truck emission factors and speed correction factors Original document Amendment Revised planning relative humidity profiles Revised planning temperature profiles Increased evaporative emissions from on-road motor vehicles due to ethanol permeation November 7, 2006 November 1, 2005 Modifications to the inspection and maintenance programs in the working draft of EMFAC2007 On-road emissions inventory fuel correction factors Coding modifications to correct errors in EMFAC2002 Revised brake wear PM emission factor Modification of mileage accrual rates Determination of statewide percent of heavy-heavy duty diesel truck (HHDDT) by count
EMFAC2002	Software User's Guide Technical Memos and Support Documents Examples (zipped file) Revised Implementation Schedule LEVII Correct Usage Rates for School Buses Correct Monthly Average Gasoline RVP Extended Idle for School Buses Correction to 2007+ HDD PM Emission Rates Extended Idle for Heavy-Duty Trucks Modification of Passenger Car Mileage Accrual Rates Update Speed Distribution Updated Vehicle Miles Traveled Updated Vehicle Miles Traveled (SCAG) Update Population and Registration Distributions Revise Phase 3 Gasoline Fuel Correction Factor Start Date Standards-Ratio Factors for Tire Wear and Brake Wear PM Revising the Cutpoints for the Enhanced Inspection and Maintenance Program Correct Banning from SSAB to SCAQMD Additional Changes to Forecast Estimates of Vehicle Activity from changing Population of Age 45 Vehicles
EMFAC2001	Software User's Guide Technical Memos and Support Documents EMFAC2001 Documentation ZEV Amendments Workshop Cover Letter and Itinerary Workshop Presentation
EMFAC2000	Table of Contents Executive Summary Model History All Support Documents Activity Correction EF Emissions Other Appendices