@Tyrantissar Advanced AI has already been modded into the game as part of Traffic Manager: President Edition. It's pretty taxing on overall performance, which is why we probably will never see it in vanilla.
The AI is better than its reputation implies, most of the complaints are just a direct result of not understanding the basic principles. All cars drive the same speeds, so spreading out on multiple lanes is useless if they're all going to the same place; they choose lanes early to avoid blocking other directions in high traffic. That's why it's important to place large roads (not highways) relatively central to popular destinations so you don't waste capacity.
They do take the fastest legal route (which often is the shortest).
The AI is better than its reputation implies, most of the complaints are just a direct result of not understanding the basic principles. All cars drive the same speeds, so spreading out on multiple lanes is useless if they're all going to the same place; they choose lanes early to avoid blocking other directions in high traffic. That's why it's important to place large roads (not highways) relatively central to popular destinations so you don't waste capacity.
They do take the fastest legal route (which often is the shortest).