If you prefer not to use mods, you can increase traffic density through the game console:
: This mod adjusts the number of vehicles based on the time of day and road type, mimicking real-world rush hours and quiet nights. It is available on the Steam Workshop.
: A massive community repository for free mods, including trucks, maps, and traffic packs.
: The best place for official development threads and direct support from mod creators. How to Increase Traffic Without Mods