So over the years I have experimented off and on with mods to make traffic and AI driver discipline better. Sadly I still am not satisfied.
The main mods I use atm would be "ClearTheWay" and "Ai Traffic Fluidity & Discipline" but even then I still have problems. The most annoying would probably be when I do a traffic or accident stop and turn on my traffic advisory lights. too often I will have AI drivers either pile up behind me even though I am not blocking a road, sometimes they will rear end my cop car and push it out of the way, other times they will just run over my taffic cones and barriers or over injured peds being treated. Its annoying as hell.
I tried a few older mods like "AI traffic" and that mod made it worse and also made vehicles on freeways float above the road like a foot. I had some luck with "riches police enhancements" and its one feature of making traffic go around your car in stage 3 but sometimes cars will also drive onto the sidewalk to get around instead of staying to the left on the road.
I would just like the game to a point where drivers obeyed traffic cones, barriers, and did not plow into emergency vehicles or run through an accident zone. It would be really nice if AI knew how to follow a path when you set out cones or turn on your lights. sometimes they do obey the barriers but they also run them over in the process a lot while following the road. Its one of the main things for me that wrecks immersion. Thats said with my current fixes it is better than the stock game where every little thing sends peds into chaos and causing a traffic pile up. Stop the peds "calm" feature also helps with that.
I am curious what other players recommend to use and think they get the best results from.