We conduct emissions modeling using MOVES default data for representative county-month combinations at the county level, focusing on the 2018 calendar year. Our methodology involves using MOVES Inventory mode with the Distance Traveled activity option to estimate link-level total emissions (in grams) and the total distance traveled (in miles). .1 for details). We then map these emission factors to individual roadway links, considering the county, MOVES road type, roadway functional classification, and roadway urban-rural classification (see Table .2 for the relational table detailing these associations). Finally, we apply these emission factors to HPMS traffic data, calculating the annual average emission rates per roadway link (g/mi/day) by multiplying the emission factor by the VMT and dividing by the road link length, for each roadway segment, vehicle type, and pollutant.