Diesel Emission
Calculation Links

Trucking Projects
To quantify estimated emissions reductions for trucking projects that utilize add-on controls or alternative fuels (except for biodiesel)

Smartway FLEET Performance Model
For technical assistance regarding this tool, please contact Annie Kee at 202-343-9218.

Biodiesel Calculator
To quantify emissions reductions for biodiesel projects

Biodiesel Calculator
For technical assistance with this tool, please contact John Brock at 415-972-3999

Truck Stop Electrification

Guidance for Quantifying and Using Long Duration Truck Idling Emission Reduction in State Implementation Plans and Transportation Conformity

Smartway Calculator
The SmartWay calculator is designed to help truck owners compare the costs and estimate the fuel savings associated with various efficiency technologies. The calculator is designed for owners of single trucks as well as multiple-truck fleets.

Smartway Calculator

Locomotive Idling

Guidance for Quantifying and Using Long Duration Switch Yard Locomotive Idling Emission Reductions in State Implementation Plans

Exhaust and Crankcase Emission

Exhaust and Crankcase Emission Factors for Nonroad Engine Modeling - Compression-Ignition

Mobile Inventories

Median Life, Annual Activity, and Load Factor Values for Nonroad Engine Emissions Modeling

CMAQ Eligibly

Memo- August 25, 2003, USDOT, CMAQ Eligibility for Idle Reduction

Technical Report: "Diesel Retrofit Technology: An Analysis of the Cost Effectiveness of Reducing Particulate Matter Emissions from Heavy-Duty Diesel Engines Through Retrofits“

The purpose of this technical analysis is to evaluate the cost effectiveness of retrofitting existing heavy-duty diesel engines to reduce particulate matter (PM). The Analysts  evaluated the costs and emissions benefits of retrofitting school buses, freight trucks, and bulldozers with diesel oxidation catalysts (DOCs) and catalyzed diesel particulate filters (CDPFs), two of the most common PM emissions reduction technologies for diesel engines.

EPA - TTN OAR Policy and Guidance - Guidance - State Implementation Plans: Incorporating Bundled Emissions Reduction Measures in a State Implementation Plan05-03-2006

Clean Energy-Environment Guide to Action05-08-2006

Clean Energy-Environment Guide to Action Policies, Best Practices, and Action Steps for States Clean Energy-Environment Guide to Action Policies, Best Practices, and Action Steps for States April 2006 EPA Clean Energy-Environment Guide to Action Contents Acknowledgements .

The National Mobile Inventory Model (NMIM) is a free, desktop computer application developed by EPA to help you develop estimates of current and future emission inventories for on-road motor vehicles and nonroad equipment. NMIM uses current versions of MOBILE6 and NONROAD to calculate emission inventories, based on multiple input scenarios that you enter into the system.

You can use NMIM to calculate national, individual state or county inventories

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.

Airport Ground Support Equipment (GSE) Model
A spreadsheet tool that provides users with a quick analysis of the emission benefits and cost-effectiveness of controlling GSE emissions.

Business Benefits Calculator 
Use this tool to estimate the financial, environmental, traffic, parking, and related values of offering employees high quality commuter benefits.

COMMUTER Model
Calculate transportation and emissions benefits associated with selected commuter benefits, incentives, and other voluntary strategies to reduce solo commuting. Emission reductions for VOCs, NOx, CO, air toxics, and CO2 may be calculated.