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 |
