This is not a mod, but can easily be installed on any map.
Here I present you a pack of AI cars to decorate your map.
Unzip and place the cars folder and trafficsystem.xml in the same folder as your map.i3d and should work fine (replace if already in the map folder).
Some cars and tractors spawn very rare, but should be over 10 custom cars.
2 tractors, 1 excavator, 1 telehandler, 1 lorry, 1 cement truck, 4 pickup trucks, 1 sport car, 1 police, several old cars (including Dacia 1310, spawns very rare, but you can modify in the xml), etc.
Credits:
Jinkou89
Were is the map.i3d folder?
inside your map floder for exmple i change the traffic in neverland map, its look like this: Documents\My Games\FarmingSimulator2022\mods\FS22_Neverland.zip\maps\mapUS
inside mapus floder theres a trafficSystem.xml. there you put the cars floder and also repkace the trafficSystem.xml