In this Cities:Skylines [Campus DLC] video you can see a noob, pro and hacker building a roundabout. The noob has no mods and isn't that good in building things in C:S. The pro is better and the hacker has a modded game with move it, road anarchy and Traffic Manager: President Edition.
Mods you can find here:
https://steamcommunity.com/sharedfiles/filedetails/?id=1460268082
Music by:
https://www.epidemicsound.com