On-Road Emission Model Methodology Documentation

This page last reviewed April 14, 2010

Using the EMFAC2000 Technical Support Documentation as a foundation and subsequent updates reflecting more recent changes, this documentation provides the technical detail on the on-road motor vehicle emissions model methodology.

For alternative formats, including hardcopy, please email Jeff Long.



Section Subject Format Last Posting
TOC Table of Contents [MS Word] [PDF] 5/22/2000
ES 1.0 Executive Summary

Background
[MS Word] [PDF] 5/15/2000
2.0 Model History [MS Word] [PDF]  5/15/2000
3.0 3.1 Overview

Annual Average
 [MS Word] [PDF] 3/30/01 
3.2 High Emitters [MS Word] [PDF] 2/26/2001
3.3 Geographic Areas [MS Word] [PDF] 6/6/2000
4.0a Basic Emission Rates Part A [MS Word] [PDF]  4/2/2001
4.0b Basic Emission Rates Part B [MS Word] [PDF] 4/2/2001
4.0c Basic Emission Rates Part C [MS Word] [PDF] 4/2/2001
4.0d Basic Emission Rates Part D [MS Word] [PDF] 4/2/2001
4.0e Basic Emission Rates Part E [MS Word] [PDF] 4/2/2001
4.8 LEV I BERs [MS Word] [PDF] 3/30/2001
4.9 LEV II BERs [MS Word] [PDF] 7/11/2000
4.10 CO2 Emissions [MS Word] [PDF] 2/26/2001
4.11 Motorcycle Emissions [MS Word] [PDF] 5/11/2000
4.12 Particulate Matter [MS Word] [PDF] 6/13/2000
4.13 HC Conversions [MS Word] [PDF] 2/24/2000
5.0 5.1 Evaporative Emissions

Running Losses
[MS Word] [PDF] 5/8/2000
5.2 Hot Soak Emissions [MS Word] [PDF] 6/29/2000
5.3 Diurnal Emissions [MS Word] [PDF] 6/12/2000
6.0 6.1 Correction Factors

Temperature Corrections
[MS Word] [PDF] 4/20/2000
6.2 Speed Correction Factors [MS Word] [PDF] 5/2/2000
6.3 Fuel [MS Word] [PDF]  5/15/2000
6.4 Air Conditioning Corrections [MS Word] [PDF] 3/30/2001
6.5 Humidity Correction [MS Word] [PDF] 5/8/2000
6.6 Altitude Correction [MS Word] [PDF] 4/20/2000
6.7 Start Corrections [MS Word] [PDF] 4/20/2000
7.0 Activity [MS Word] [PDF] 5/22/2000 
7.1 Accrual Rates [MS Word] [PDF]  4/20/2000
7.2  Vehicle Population [MS Word] [PDF] 5/4/2000 
7.3

7.4

7.5
Retention Rates

Forecasting / Back Casting

VMT & Speed
[MS Word] [PDF] 5/22/2000
7.6 Distribution of Hourly Activity [MS Word] [PDF] 5/2/2000
7.7 RVP Distribution [MS Word] [PDF]  4/20/2000
7.8 Temperature Profiles [MS Word] [PDF] 5/3/2000
8.0 I/M and OBD2 [MS Word] [PDF] 3/30/2001
9.0 Incorporation of Latest Standards [MS Word] [PDF] 5/15/2000
10.0 HDT Emissions [MS Word] [PDF] 5/15/2000
11.0 HDT Activity [MS Word] [PDF] 5/11/2000
12.0 Mexican Vehicle Emissions [MS Word] [PDF] 4/20/2000
13.0 Quantification of Changes [MS Word] [PDF]  5/15/2000
  Appendices [MS Word] [PDF]  5/15/2000 
  All Documents PK-Zip 4/2/2001 


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