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.
Vehicle types: Cars (fast), Trucks (slow, large), Buses (medium). Watch for congestion patterns!