EPA Releases Updated Fleet Emissions Analyzer


The EPA announced a new, faster and more robust software tool for fleet operators to gauge the levels of harmful pollutants from buses, trucks and other vehicles as part of ongoing federal efforts to understand mobile source emissions.

Prior to the new year, EPA updated its previous MOBILE6.2 program with MOVES2010, short for “Motor Vehicle Emission Simulator.” It’s what the agency refers to as a state of the art upgrade to the previous modeling tool used to estimate vehicle emissions. MOVES2010 analyzes volatile organic compounds (VOCs), nitrogen oxides (NOx), carbon monoxide (CO), particulate matter (PM10 and PM2.5), greenhouse gases and other pollutants.

MOVES2010 uses a graphical user interface (GUI) that allows users to more easily set up and run the model. It uses open source database management language MySQL to perform calculations. The result, according to the EPA, is greater flexibility in output choices, allowing users to gauge total mass of emissions outputed or emissions factors such as grams per mile or grams per vehicle.

The tool also includes an improved emission rate calculator that provides “lookup table” results for starts and evaporative emissions as well as exhaust emissions. It eases entry of local fuels, heavy-duty reflash parameters, and other user inputs and includes the ability to model new pollutants and precursors (sulfur dioxide, ammonia, nitrogen dioxide, and nitric oxide).

It is approved for use in official state implementation submissions to the EPA and for transportation comformity analyses performed outside California. EPA added that a would create a two-year grace period before requiring MOVES2010. A notice of availability was pending in the Federal Register. The EPA has made available both policy and technical guidance.

A how-to guide on setting up and running MOVES2010 is also available online.