[2020] Traffic manager

Hi and welcome! The mod linked by Zetheplay is the one you want. Since you're new to modding, I'm just gonna link you this beginner's guide, as it's really handy when getting into the world of modding the game. It covers all the basics and gives some recommendations for where to start. I definitely recommend giving it a read. :)

https://steamcommunity.com/sharedfiles/filedetails/?id=1411897315