You can vary a lot of parameters, type of road, properties of vehicles and even politeness (speed of lane change) and place obstacles! Good fun
https://traffic-simulation.de/ 
The managers of the Parisian ring road should spend a few hours (sorry: a few days, months, years ... ??
) above!!I had discovered this simulator some time ago and it seemed to me that we had already talked about it somewhere here or there but I can not find where ... or I forgot to present it to you the time? From this topic new-transport / 6-metros-half that-s-Stop-2-stations-on-4-but-you-ride-and-down-and-you-want-t16305.html it came back to my mind! Who do we say thank you?
ps: funny in English traffic takes 2 ff, I had never noticed!
