On September 12, 2023 the EPA issued a Notice of Availability in the Federal Register (F.R. Vol. 88 No. 175 [FRL-11012-01-OAR]) of MOVES4, the latest version of EPA's state-of-the science modelling tool for estimating emissions from cars, trucks, buses, and motorcycles based on the latest data and regulations. EPA's announcement of the MOVES4 emissions model availability for State Implementation Plans (SIPs) and transportation conformity analyses in states other than California, is effective September 12, 2023. This announcement starts a two-year transportation conformity grace period that ends on September 12, 2025. After the 2025 date, MOVES4 will need to be used as the latest EPA emissions model for new transportation conformity analyses outside of California in both regional emissions analyses and in hot-spot analysis.
The Notice is available on InterRegs.NET for our US - Federal subscribers and is also available at www.selectregs.com.