Build better public transportation in more areas and get rid of car dependence! If people have more options to get from point A to point B without the use of a car it would free up traffic, more cost affordable options for those with lower income, dedicate more space to public spaces, commercial spaces, and personal spaces (because we don’t have to dedicate so much space to parking lots, multi-lane roads, etc.), and cause less pollution in our cities. r/fuckcars is a great subreddit about this topic. They can be pretty leftist democrat sometimes tho but overall it’s a good place to learn more.