Not forcing everyone to go to a big centralized city rather than spreading everything out will actually fix it. We started doing that long ago but recently have started listening to greedy real estate developers gentrifying cities and now EVERYONE GO TO CITY TO DO THING and people are now shocked, SHOCKED that traffic into and out of cities is out of control.
And love how other "solutions" are LOL MASS TRANSIT. Yep, going somewhere on a track that doesn't go immediately to a certain place then having to get on a damn bus or in a taxi or a freaking Uber scam to actually get where they need to go which is not only ableist because it's difficult for people with mobility issues to do that, but also problematic if you need to actually transport any decent amout/size of goods on said public transportation. Cars are the best at getting places and no amount of whining and bitching and complaining is going to change it.
Could the problem be that all the money went into building roads and car centric cities, and no money was spent on making mass transit better or rethink on how urban sprawl might cause massive traffic problems?