Driving doesn't have to be complete chaos. Basic common sense and courtesy go a long way since it seems almost all of road problems are caused by people driving selfishly.
I would like to see some published and standardized set of etiquette, tiebreaks, niche situation rules, and hand signals.
Also something like a literacy test for drivers licencing along the lines of a very lightweight psychological exam.
I get nervous about talking about it because everyone, when huwitey gets upset when you bring up more driving rules. But I have seen what truly good traffic flow can be from very lucky arrangements of other drivers.
Imagine ideal flow on the road as a waltz, different places in different stages of the dance, but nontheless flowing between eachother carefully and in step. Flow on the highway is more like multiple military marches at once, everyone keeps to their own group at a constant pace, but navigate around slower marching groups smoothly and orderly.