I mean in those areas where it just identical houses along a road in huge blocks.
How would you realisyicly solve it?
Realistically, the easiest way is to rezone some of those areas to retail and office space, and to encourage high density construction.
Rezoning some of those buildings to low density retail and office space will reduce total traffic by allowing some people to have shorter commutes, instead of everyone jamming every highway out of town every day.
And as those buildings age and become more expensive, small sections of them can be knocked down and replaced with higher density buildings, as property values rise. Eventually the whole area with high and medium density, simply because that is what makes sense.
You can also establish commuter rail, where maybe there’s only a couple of stops, but they all go to wherever the jobs are. That will help ease congestion while property values rise enough for higher density development to make sense.