EPA posts new MOVES report – Overview of EPA’s MOtor Vehicle Emission Simulator (MOVES3)

EPA has summarized information about the MOVES mobile source air pollution emission inventory model in a new report: Overview of EPA’s MOtor Vehicle Emission Simulator (MOVES3).  We expect this document will be a useful technical reference for MOVES modelers and others who use MOVES results.

The new report includes the following sections:

Introduction, including information on MOVES scope, versions, and typical uses.

Updates for MOVES3, including a summary of new features, inputs, and updates to the user interface.

MOVES Onroad Algorithms, briefly summarizing the calculation methods used to estimate vehicle emissions.

MOVES Nonroad Algorithms, briefly summarizing the calculation methods used to estimate emissions from nonroad equipment.

MOVES Software Structure, including information on MOVES software components and MOVES databases.

MOVES3.0 Results, including comparisons of MOVES3 and MOVES2014b emission estimates for onroad vehicles at the national and county scale for a variety of years, and graphs of national nonroad emissions over time.

MOVES Evaluation, summarizing the MOVES review process and approaches to model evaluation.

Considerations When Using MOVES, explaining features of the MOVES design and input data that may affect the model’s applicability for specific modeling uses.

MOVES Documentation, providing links and descriptions to MOVES extensive documentation with more detailed information on guidance, user instructions, training and MOVES default inputs.



The MOVES3 overview report is available for download at www.epa.gov/moves/latest-version-motor-vehicle-emission-simulator-moves, as well as on the MOVES technical report pages https://www.epa.gov/moves/moves-onroad-technical-reports and https://www.epa.gov/moves/nonroad-technical-reports.

FHWA Air Quality and Sustainable Transport Highlights

The purpose of this message is to inform you that the latest issue of the FHWA Air Quality and Sustainable Transport Highlights is now available.

The Highlights provide the latest news and information on transportation related air quality and sustainability activities, including information on transportation conformity, resiliency, and other related activities.

Items of interest in this issue include:

  • FY 2020 Congestion Mitigation and Air Quality Improvement (CMAQ) Program Annual Reports
  • EPA’s Motor Vehicle Emission Simulator (MOVES3) now official air quality model.

Past issues of the Air Quality and Conformity Highlights are available at: http://www.fhwa.dot.gov/environment/air_quality/conformity/highlights/

Past issues of the Sustainable Transport Newsletter are available at: https://www.fhwa.dot.gov/environment/sustainability/newsletter/index.cfm

I encourage you to share the Highlights with State and local transportation and air quality partners, and all who may be interested in transportation related air quality and sustainable transport issues. Divisions and the Resource Center are encouraged to email suggestions for items to be included in the Highlights to Victoria Martinez at [email protected] or Becky Lupes at [email protected].

MOVES3 Notice of Availability

EPA has published in today’s Federal Register the Official Release of the MOVES3 Motor Vehicle Emissions Model for SIPs and Transportation Conformity:


This action serves as the MOVES3 Notice of Availability, and starts a two-year transportation conformity grace period for use of the MOVES3 model that ends on January 9, 2023.

EPA announces final decision on review of the Ozone standard

On December 23, 2020, the U.S. Environmental Protection Agency (EPA) announced its decision to retain, without changes, the 2015 ozone National Ambient Air Quality Standards (NAAQS).

A copy of the pre-publication manuscript and a fact sheet are available at the link below:


EPA announces final decisions on review of the Particulate Matter standards

Based on the Environmental Protection Agency’s (EPA’s) review of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the Administrator has reached final decisions on the primary and secondary PM NAAQS. With regard to the primary standards meant to protect against fine particle exposures (i.e., annual and 24-hour PM2.5 standards), the primary standard meant to protect against coarse particle exposures (i.e., 24-hour PM10 standard), and the secondary PM2.5 and PM10 standards, the EPA is retaining the current standards, without revision.

The final decision was signed on December 4, 2020.

A link to the pre-publication manuscript: https://www.epa.gov/sites/production/files/2020-12/documents/frl-10018-11_12_4_2020_admin.pdf

We do not yet have a publication date, but will do our best to keep you posted on that. We also invite you to check the Federal Register public inspection site – this link shows what will publish in today’s Federal Register: https://www.federalregister.gov/public-inspection/current