This pack contains two scripts that improve city traffic: Less Overtaking 0.9 Final - makes motorists not so arrogant. They will stop behind your car and wait patiently without trying to go around or ram it (waiting time is about 25 seconds). And Traffic Maker 0.9 Final - makes the flow of cars more diverse.
Installation: Drop the files LessOvertake.net.dll and TrafficMaker.net.dll into the script folder .../Grand Theft Auto IV/scripts/.