This EPA Web page provides the MOBILE6 Vehicle Emission Modeling Software and related presentations and training resources. MOBILE6 is an emission factor model for predicting gram per mile emissions of Hydrocarbons (HC), Carbon Monoxide (CO), Nitrogen Oxides (NOx), Carbon Dioxide (CO2), Particulate Matter (PM), and toxics from cars, trucks, and motorcycles under various conditions.
For further information or assistance regarding this web page or MOBILE6:
MOBILE Model Information Contact: fax: (734) 214-4939 or email: Mobile (mobile@epa.gov)
EPA-MOBILENEWS Listserver: Full description and subscription information 2K TXT
MOBILE6 Model
MOBILE62.ZIP -- This zipped file allows users to download the MOBILE6.2 model, including HC, CO, NOx, PM air toxics, user guide, supporting documentation, a "frequently asked questions" list, source code, and sample input and output files. This file includes the updated PM emission factors for heavy duty diesel vehicles. The file can be unzipped with standard software such as WinZip. A "read-me" file explains the next steps for setting up and using the model. (March 2006) 3.4M ZIP (Free zip software is available at http://www.download.com/) If you already have the current MOBILE6 model, but need the new PM emission factors, you can download and use just the updated PM emission factors here, (TXT, 14K)
MOBILE6 User Guide (PDF, 262 pages, 846K) (EPA420-R-03-010, August 2003) This guide (also in MOBILE62.ZIP) provides detailed instructions for setting up and running MOBILE6 emission scenarios.
MOBILE6.2 Policy Guidance (PDF, 13 pages, 672K) (February 24, 2004) This guidance clarifies how and when the current version of MOBILE6.2 can be used for SIPs and conformity purposes.
Technical Guidance on the Use of MOBILE6.2 for Emission Inventory Preparation -- This document provides EPA guidance on appropriate input assumptions and sources of data for the use of MOBILE6.2 in SIP and conformity related submissions.
Technical Description of the Toxics Module for MOBILE6.2 and Guidance on Its Use for Emission Inventory Preparation - This document describes the methodology used to estimate air toxic emission rates in the toxics module for MOBILE6.2, describes the sources of data used, and provides users with guidance on how to obtain data required as input parameters for the model. The document also compares some MOBILE6.2 results to results using a previous highway mobile source toxics emission factor model, MOBTOX5b.
Workbook for making MOBILE6.2 and MOBTOX5b comparisons by vehicle class and model year: 4.2M ZIP XLS
Sensitivity Analysis of MOBILE6.0 (PDF, 64 pages, 1.3M) (EPA420-R-02-035, December 2002). This report presents a systematic study of the relative importance of various MOBILE6 input parameters.
Frequently Asked Questions (PDF, 42 pages, 140K) (EPA420-B-03-013, November 2003). This document (an October 2003 version is also in MOBILE62.ZIP) lists questions from MOBILE6 users and answers from EPA staff.
Excel spreadsheet and Windows program to calculate the humidity ratio in grains of water per pound of dry air using relative humidity, barometric pressure, and ambient temperature as input. (February 2002) 16K XLS
EPA is developing a variety of training opportunities for MOBILE6 users. Information on this training will be posted as available. Also see the MOBILE6 user guide above.
5-Day Training presented in Seattle, September 2001
PowerPoint presentation given on the first day of the course. (PDF, 195 pages, 2.4M). This is a basic introduction to on-road emissions modeling and MOBILE6. It can serve as a stand-alone class for managers and others who will not perform analyses using the model.
During the second through fifth days of the training, numerous examples were worked in class. The examples are given in the training manual. The solutions to those examples are given in these four files:
Comments and questions should be sent by email to Mobile (mobile@epa.gov). Please make sure to include your name and organizational affiliation on any comments.
