After getting frustrated at GTAIV again recently, I bought and tried Midnight Club Los Angeles which, as most might know, is from Rockstar Games too and about as old as IV, and I gotta say, if the traffic in GTA V will be behaving as they do in MCLA I'm totally fine with it. Honking is still very common but they at least seem to notice there is somebody in front of them when they sit at a red traffic light. They don't overtake, usually I am the one overtaking them and then, at the next intersection, braking a little, little too late (when I'm cruising a bit "quicker", but still roughly obeying the law) and bumping them from behind. The good thing is, they don't get out and pull you out of your car like GTA's infamous taxi drivers, they honk, than they live on and drive away. I can get a quick repair at any gas station or I total my car (then it gets repaired automatically in free drive), pretty awesome, finally no more I-need-to-steal-a-new-car-and-evade-the-cops after destroying the previous one because of the horrible AI traffic. Also there is an actual speedometer and the speed limit is shown on your HUD all time, if you speed and crash cops chase you, but they don't shoot you down, the either pull you over or, if you decide to run, they start a pursuit, which you can either end in 3 minutes if you're not interested by flooring it on the highway or you have some fun and let them chase you through the city for 20 minutes, that's more fun than you might think, they are really clever at pit manoeuvring you and keep on your tail almost all time if you let them.
Long story short, I got MCLA Complete Edition for 20€ and I'm very satisfied with it, it's better for cruising and feels even more realistic than GTAIV (imagine an arcadey version of the GT5 handling with racing supersoft tyres).
Oh, did I mention it has a - pretty nice looking - cockpit view in all cars? And some nice sounding engines, at least on the upper class cars? I prefer it a lot over GTA for cruising in a free city now.
I'm off, cruising through Hollywood in my Gallardo...