City traffic simulation: Cars navigate a grid road network with traffic lights.
Controls: Click intersections to toggle traffic lights. Cars spawn from edges and find routes to random destinations.
Systems: Cars have origins, destinations, routes, speed, and patience. Traffic lights cycle automatically. Traffic density shown as color overlay. Rush hours spike car spawning. Accidents block lanes temporarily.
Design traffic networks and observe how vehicles flow through them. Optimize intersections and road layouts. Transportation simulation about traffic engineering.