To assess exposure equity, we classify each census block into ten emission density exposure groups (deciles) for each pollutant. These deciles range from blocks with the lowest emission density (decile 1) to those with the highest (decile 10), each containing an equal number of census blocks. For each decile, we calculate the proportion of the population by race, ethnicity, and poverty level, along with the population-weighted average median household income. This comparative analysis allows us to examine disparities in exposure to vehicle emissions across different demographic groups.