This project is a traffic system within Unity. It uses modular pieces to create roads.
The goal of the project was to get a traffic system that would be lightweight at run-time and can handle a large amount of cars at a time. This is done by computing a roadgraph at startup, and the cars only need to request needed information from the graph.
The graph is seen visualized in some of the screenshots, as well as shown in the video below.
If you're interested in a more in-depth explanation of the entire system, the documentation I've written on it is downloadable below.